You have an atom with 17 protons, 18 neutrons, a net charge -1, and a mass of 35. How many electrons does this atom have?

Answers

Answer 1

Answer:

this atom have 18 electrons

Explanation:

we know that in nutral state of atom , an atom have equal number of protons and electrons ,but in this question this atom is not nutral means it is charged this atom have -1 charge this means it gains 1 electron .in nutral state if an atom have equal number of proton and electron when the atom is charged(gain or lost certain amount of electron) number of electron become proton -the electron it losts or proton + the electron it gainsthis atom have -1 charge this means it gains 1 electron so the number of electron calculated by ; proton + the number of electron it gains; this atom have 17 protons so , number of electron =17+1=18there fore this atom have 18 electrons.

I think its helpful for you

Related Questions

Two carbon atoms (Group 14) bond with two hydrogen atoms (Group 1) to form acetylene (C2H2). How would each carbon atom in acetylene bond?(1 point)

A) Each carbon atom would share one pair of electrons with hydrogen and three pairs with the other carbon atom.

B) Each carbon atom would share one pair of electrons with hydrogen and one pair with the other carbon atom.

C) Each carbon atom would share one pair of electrons with the other carbon atom and three pairs with each hydrogen atom.

D) Each carbon atom would share one pair of electrons with the other carbon atom and two pairs with each hydrogen atom.

Answers

A because I took the test and

please help n let me know thank u

Answers

I can’t see the question clearly can you type it

What are the substances you start with in a chemical reaction called?
A. The intermediates

B. The products

C. The mixture

D. The reactants

Answers

The answer is B the products those are the products your starting off with
I think it’s answer D. The reactants

What Group is this atom located use a number only
*

Answers

7 count the dots in the middle for you answer and if not it’s 3

Define physical and chemical properties, provide three examples of each, discuss their reversibility, and
explain the fundamental differences between them.

Answers

Physical properties are defined as the properties
which can be observed without changing its
chemical composition.
For example: color, volume, and molecular
weight.
Chemical properties are defined as the
properties which can be observed only after
changing chemical identity of the substance.
For example: reactivity, toxicity, and
flammability.
The fundamental differences between physical
and chemical properties are as follows:
Chemical properties are related to
chemical bonds of the substance while physical
properties are not.
In chemical properties, chemical identity of
substance changes while physical properties do
not have any change.
Chemical properties predict the reaction of
substance while physical properties only describe
the appearance of the substance.

Pure iron, Fe , can be produced from an ore called hematite, Fe2O3 , by reaction with carbon at high temperatures. 2Fe2O3+3C⟶4Fe+3CO2 How many tons of hematite must react with carbon if an iron company needs to make 49 tons of iron?

Answers

70 tons of hematite (Fe₂O₃) is needed to produce 49 tons of iron (Fe).

We'll begin by calculating the tons of hematite (Fe₂O₃) that reacted and the tons of Fe produced from the balanced equation. This is illustrated below:

2Fe₂O₃ + 3C —> 4Fe + 3CO₂

Molar mass of Fe₂O₃ = (56×2) + (16×3) = 160 g/mol

Mass of Fe₂O₃ from the balanced equation = 2 × 160 = 320 g

Divide by 907185 to express in ton

320 / 907185 = 0.000353 ton

Molar mass of Fe = 56 g/mol

Mass of Fe from the balanced equation = 56 × 4 = 224 g

Divide by 907185 to express in ton

224 / 907185 = 0.000247 ton

SUMMARY

From the balanced equation above,

0.000353 ton of Fe₂O₃ reacted to produce 0.000247 ton of Fe.

Finally, we shall determine the tons of hematite (Fe₂O₃) needed to produce 49 tons of Fe. This can be obtained as follow:

From the balanced equation above,

0.000353 ton of Fe₂O₃ reacted to produce 0.000247 ton of Fe.

Therefore,

X ton of Fe₂O₃ will react to produce 49 tons of Fe i.e

X ton of Fe₂O₃ = [tex]\frac{0.000353 * 49}{0.000247} \\\\[/tex]

X ton of Fe₂O₃ = 70 tons

Thus, 70 tons of hematite (Fe₂O₃) is needed to produce 49 tons of Fe.

Learn more: https://brainly.com/question/15343472

which of the following is not true for chemical change

Answers

Answer:

"They can be reversed by physical changes."

Explanation:

A chemical change can form a new substance, can be detected by the change in color and they have properties different from their starting materials.


1. What is the shape of an organic molecule containing a triple bond with respect to the carbons on either side of the bond?
Explain your answer

Answers

Answer:

The alkyne is linear

Explanation:

Any molecule with a triple bond is considered an alkyne. In regards to the shape, because carbon can only bond to 4 different atoms at once a triple bond fills in 3 of the required 4 atoms needed to reach the molecules ground state (when it's most stable). The more electrons shared between atoms, the shorter the bond will be which results in a stronger and more linear line. Keep in mind a quadruple bond is not possible between carbons as of now.

The temperature at which a solid melts is the same as the temperature at which its liquid form solidifies (true or false)​

Answers

Answer:

True I think so

Explanation:

I have asked question in my profile please tell me the answer

Calculate the number of days after the explosion for a sample of iodine-131 to go from 100%
iodine-131 to less than 1% iodine-131. Complete chart.

Answers

It will take 56 days to go from 100% iodine-131 to less than 1% iodine-131.

From the table, we can see that the half life of iodine-131 is 8 days. We can see that it takes 8 days to have 50% of iodine-131

After 16 days, we will have 25 % of iodine-131

After 24 days, we will have 12.5 % of iodine-131

After 32 days, we will have 6.25% of  iodine-131

After 40 days, we will have 3.125% of  iodine-131

After 48 days, we will have 1.5625% of iodine-131

After 56 days, we will have 0.78125% of iodine-131

After 56 days, the percentage of iodine-131 drops to less than 1%.

Learn more: https://brainly.com/question/22824409

PLS I NEED HELP QUICKKKKK

Match each example to the type of wave.

B. Longitudinal wave
A. Transverse wave
C. Combination of longitudinal and transverse wave
D. Infrared wave
E. Radiant energy
F. Microwaves
G. Ultraviolet waves

Answers

Answer: These are all examples of the waves you listed

B- Soundwave, ultrasound waves

A-Surface ripples on water

C- water waves

D-The heat that we feel from sunlight, a fire, a radiator or a warm sidewalk is infrared.

E-The heat emitted from a campfire.

F-Long Distance Wireless Transmission. Most wireless transmission systems are based on microwave technology.

G- Disinfectants

Explanation:

Hope this helps!!

Have a nice day!

4. The cup is a volume widely used by cooks in the UAE. One cup is equivalent to 237 mL.
a. If 1 cup of olive oil has a mass of 216 g, what is the density of olive oil in kg/mL?


b. Convert the density from part A to kg/mL. Write your answer in scientific notation.

Answers

Taking into account the definition of density and scientific notation, the density of olive oil is 0.000911 [tex]\frac{kg}{mL}[/tex] or 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.

In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance.  That is, density is the relationship between the weight (mass) of a substance and the volume it occupies.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

[tex]density=\frac{mass}{volume}[/tex]

In this case, you know that:

mass= 216 g= 0.216 kg (being 1000 g= 1 kg)volume= 237 mL

Replacing in the definition of density:

[tex]density=\frac{0.216 kg}{237 mL}[/tex]

Solving:

density= 0.000911 [tex]\frac{kg}{mL}[/tex]

On the other side, scientific notation is a quick way to represent a number using powers of base 10.  

The numbers are written as a product:

a×10ⁿ

where:

a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number. n = a whole number, which is called an exponent or an order of magnitude. Represents the number of times the point decimal is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.

In this case, the density expressed in scientific notation is: 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]

In summary, the density of olive oil is 0.000911 [tex]\frac{kg}{mL}[/tex] or 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]

Learn more

about density: brainly.com/question/952755?referrer=searchResults brainly.com/question/1462554?referrer=searchResultsscientific notation: brainly.com/question/18073768?referrer=searchResults

what is the difference between exergonic and exothermic reactions?​

Answers

Answer:

An exergonic reaction is a type of chemical reaction that releases free energy to the surroundings. The final state of this reaction is less than its initial state. ... “Exothermic” literally means “outside heating” while “exergonic” literally means “outside work.”

Explanation:

If this helped you, please consider me for brainly!

Have a happy day <3 Miss Hawaii

An exothermic reaction is where energy is given off as heat and an exergonic reaction is where energy is given off as light.

helppppppppppppppppppppppppppppp

Answers

Answer:

any form of water that falls from the sky

What is the mass of 2.3 x 10²¹ atoms of bromine?​

Answers

Answer:0.305g

Explanation:

mass = 79.9x(2.3 x 10^21) / (6.02 x 10^23)

= 0.305

Please help me. I can’t give too much points bc I don’t have too much.

QUANTUM=
The relationship between energy and frequency=
E = hy
EN
h=
V=
Albert Einstein: PHOTONS

Answers

Answer is photons hope this helps

A student sets up a titration apparatus with 25 mL of potassium. hydroxide in the flask. In three to five sentences, explain how the student can use a 0.1 M solution of hydrobromic acid to determine the concentration of potassium hydroxide in the reaction.

Answers

The concentration of 25 mL of potassium hydroxide can be determined from 0.1 M solution of hydrobromic acid by titration.

Titration involves the process by which the concentration of an unknown solution is determined by reaction a known volume of the unknown solution with a carefully measured volume of a standard solution. By determining the volume of the standard solution required to react completely with the solution of unknown concentration, its concentration can be accurately determined by calculation.

In order to determine the concentration of  25 mL of potassium hydroxide, this volume of solution is put into a conical flask and titrated against a known volume of 0.1 M solution of hydrobromic acid. At the end point, usually signified by a color change, the concentration of the 25 mL of potassium hydroxide solution can be calculated from the stoichiometry of the reaction.

Learn more: https://brainly.com/question/9847214

2.When copper (II) nitrate reacts with sodium hydroxide, copper (11) hydroxide is produced.
How many grams of copper (11) hydroxide can be prepared from 2.7 g of copper (II) nitrate
reacting with sodium hydroxide?

Answers

Answer:

 

2Cu + S ~~~> Cu2S Copper (C) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction.

Explanation:

Which of these is a common to all chemical changes

A) A new change of sate occurs

B) A change of color occurs

C) a new substance is produced

D) heat is released into the air

Answers

C. A new substance is produced. All others are physical changes.

Answer:

c

a new substance is produced

what is the resonance structure of ch3​

Answers

Answer:

For the CH3- structure use the periodic table to find the total number of valence electrons for the CH3- molecule. Once we know how many valence electrons there are in CH3- we can distribute them around the central atom with the goal of filling the outer shells of each atom.

In the Lewis structure of CH3- structure there are a total of 14 valence electrons.

Also note that you should put the CH3- Lewis structure in brackets with as 1- on the outside to show that it is an ion with a negative one charge.

----- Steps to Write Lewis Structure for compounds like CH3- -----

1. Find the total valence electrons for the CH3- molecule.

2. Put the least electronegative atom in the center. Note: Hydrogen (H) always goes outside.

3. Put two electrons between atoms to form a chemical bond.

4. Complete octets on outside atoms.

5. If central atom does not have an octet, move electrons from outer atoms to form double or triple bonds.

Lewis Structures, also called Electron Dot Structures, are important to learn because they help us understand how atoms and electrons are arranged in a molecule. This can help us determine the molecular geometry, how the molecule might react with other molecules, and some of the physical properties of the molecule (like boiling point and surface tension).

Explanation:

CH3CNO can be represented by at least three different but valid Lewis structures called resonance forms, or resonance structures, shown below.

When two atoms bond chemically it is because of the interaction between
A) the nuclei of each atom.
B) the protons in each atoms.
C) all electrons in the atoms.
D) the valence electrons in each atom.

Answers

Answer:

C

Explanation:

It depends on the bonding for an explanation.

If one atom is a metal and one is a non metal it will be ionic. This is because one atom transfers its electron to the other atom giving them both a charge. They will then be bonded due to opposite forces of attraction.

If both atoms are non metals it will be covalent. Electrons pair together in the center of two atoms that have merged together and they share their electrons.

(Makes more sense with diagrams)

Why is the periodic table not arranged by atomic weight and instead arranged by atomic number?

Answers

The chemical properties are mainly dependent on the electrons, or in some cases the charge of the protons, which is independent of the number of neutrons.So,they are arranged by increasing atomic number…
Atomic weight doesn't increase in a constant manner with respect to elements increase in atomic number.Where as while taking about atomic number it increases in a specific manner so it's easy to arrange a periodic table .

At before Duberinor,Mendeleev tried to use atomic weight but they failed .

According to the periodic table, which two elements have an atomic mass less than twice their atomic number?

Answers

Answer:

Hydrogen and oxygen

Explanation:

Hydrogen

2 × atomic number = 2

atomic mass = 1.008 amu

Oxygen

2 × atomic number = 16

atomic mass = 15.999 amu

helpppppppppppppppppppppppppppp

Answers

Answer:

1)

Explanation:

ok this is a write answer

4) Water warms up and becomes vapor

Using the standardized NaOH solution in the previous
question, the titration of 5.00 mL of vinegar required
42.25 mL of NaOH. What is the % of acetic acid in the
vinegar? Previous standardized NaOH solution = 0.098

Answers

Answer: Using the standardized NaOH solution in the previous question, the titration of 5.00 mL of vinegar required 42.25 mL of NaOH. What is the % of acetic acid in the vinegar? Concentration of NaOH from previous question= 0.0986 M. David C.

Explanation:

Please mark as brainliest for me.Thank you so much

The percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.

What is titration?

Titration is defined as the process of chemical analysis method in which the amount of a sample's constituent is determined by mixing a precisely measured amount of the desired constituent with another material in a precise, known proportion. The equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined, is to be detected by the titration.

According to the titration principle, V1=the volume of acetic acid and V1S1=V2S2

S1 is the acetic acid's strength

V1 = 42.25 ml * 0.0986 M / 5 ml = 0.833 M where V2 = Volume of NaOH S2 = Strength of NaOH

Hence, 1000 ml Vinegar contains 0.833 moles of acetic acid per 100 ml of vinegar (0.0833*60). G=4.998 grams of acetic acid

The amount of acetic acid in vinegar is 4.988%.

Thus, the percentage of acetic acid in vinegar is 4.988 %., When the titration of 5.00 mL of vinegar required 42.25 mL of NaOH.

To learn more about titration, refer to the link below:

https://brainly.com/question/2728613

#SPJ2

PLEASE EXPLAIN I KNOW THE ANSWER I NEED AN EXPLAINATION

The potential energy as a function of internuclear distance for three diatomic molecules, X2, Y2, and Z2, is shown in the graph above. Based on the data in the graph, which of the following

Answers

From the graph shown, Y2 = N2, X2 = O2, Z2 = H2.

When atoms of elements are at a large distance from each other, the potential energy of the system is high. However, as the atoms approach each other, the potential energy of the system decreases steadily. The closer the atoms come to each other, the lower the potential energy. This implies that potential energy is proportional to bond length.

Since N2 has a shorter bond length and higher energy, Y2 must be N2. The bond energy of hydrogen is small hence H2 must be X2. The bond energy of a double bond is intermediate between that of a single and triple bond hence Z2 must be O2.

Learn more: https://brainly.com/question/24857760

Is the molecule H2+ stable?

Answers

Answer: Yes

The antibonding orbital is empty. Thus, H2 is a stable molecule.

Answer: yes it is

Explanation:Bond order

The antibonding orbital is empty. Thus, H2 is a stable molecule

Which substances will make a salt when combined?

Vinegar and soda
Soda and wine
Detergent and ammonia
Fertilizer and vinegar

Answers

Answer:

vinegar and soda

Explanation:

Mixing baking soda (sodium bicarbonate) and vinegar (acetic acid) causes a chemical reaction that produces a salt (sodium acetate) and water, as well as carbon dioxide gas.

Answer:

Fertilizer and vinegar

Explanation:

Fertilizer is a base, and vinegar is an acid. Salt is made when you combine a base and an acid. Plus, I got a 100% on the test and this was my answer.

When doing medical research with human subjects, which four limitations are unavoidable?

Answers

Answer:

Answer

The limitations are-

1. Privacy of the individuals involved in the research process.

2. Physical and psychological risks should be minimized

3. The subjects should be chosen equitably

4. Only reasonable exposure to risks is admissible.

Explanation

The privacy of the individuals involved in the research must be taken into consideration. This will ensure safety of patient data and information. The risk of physical and physiological well being of the person must be taken into consideration in such a research. In addition to that, the subject must be made to understand every procedure and the risks involved before testing. Moreover, only minimal exposure to risks is allowed and must have been previously tested in animals to avoid deaths.

A 3.90 L sealed vessel under vacuum is filled with 6.40 g of fluorine gas. What is the pressure (in kPa) of the vessel at 25.0 ⁰C ?

Answers

From the ideal gas law, the pressure of the gas is 106 kPa.

First we must obtain the number of moles of the gas;

Number of moles = mass/molar mass

Molar mass of fluorine gas = 38 g/mol

Number of moles of F2 = 6.40 g/38 g/mol = 0.168 moles

Using the ideal gas equation;

PV = nRT

P = ?

V = 3.90 L

n =  0.168 moles

T = 25.0 ⁰C + 273 = 296 K

R = 8.314  kPa L K-1 mol-1

Substituting values;

P = nRT/V

P =  0.168 moles × 8.314  kPa L K-1 mol-1 ×  296 K/3.90 L

P = 106 kPa

Learn more: https://brainly.com/question/1190311

The pressure of the vessel at a temperature of 25 °C is 106.73 KPa

We'll begin by calculating the number of mole of fluorine gas. This can be obtained as follow:

Mass of F₂ = 6.40 g

Molar mass of F₂ = 19 × 2 = 38 g/mol

Mole of F₂ =?

Mole = mass / molar mass

Mole of F₂ = 6.40 / 38

Mole of F₂ = 0.168 mole

Finally, we shall determine the pressure. This can be obtained as follow:

Volume (V) = 3.90 L

Temperature (T) =  25.0 °C = 25 + 273 = 298 K

Mole of F₂ (n) = 0.168 mole

Gas constant (R) = 8.314 L.KPa/Kmol

Pressure (P) =?

PV = nRT

P × 3.9 = 0.168 × 8.314 × 298

P × 3.9 = 416.232096

Divide both side by 3.90

P = 416.232096 / 3.90

P = 106.73 KPa

Therefore, the pressure of the vessel is 106.73 KPa

Learn more: https://brainly.com/question/15688935

Other Questions
Why are there so many earthquakes in califonia? Hi, I need help with this question and I don't it is right or wrong answer pls correct me and explain. ASAPWhich river is Asias longest and is home to approximately one-third of Chinese people?Shinano RiverYellow River (Huang He)Yangtze River (Chang Jiang)Yalu River (Amnok)How do East Asia's rivers contribute to the regions economic development?Choose all answers that are correct.Rivers in Japan provide important trade routes.The fertile plain of the Yellow River provides an important farming area.About two-thirds of Chinas rice is grown along the Yangtze River.River fishing is key to the economy of the region.Which resource is imported by China even though China is the worlds largest producer of this resource?iron orewood productszinccoalWhich statements accurately describe Japanese history from the nineteenth century to the mid-twentieth century?Choose all answers that are correct.Japan supported North Korea during the Korean War.Shoguns ruled until the mid-twentieth century.A U.S. Naval officer pressured Japan to open the country to foreign trade.Japan became a military and industrial power by the mid-1900s.Which statements accurately describe China after World War II ?Choose all answers that are correct.The Cultural Revolution under Mao in the 1960s oppressed students and professionals.Since 1976, China has had a mixture of a market economy and a communist economy.After Mao's death, Chinese leaders began to open the country more to the west.Maos Great Leap Forward plan to increase industry was a great success.Which factors slowed population growth in China until the 1300s?Choose all answers that are correct.urbanizationepidemicswarfareone-child policyWhich characteristics of tsunamis are true?Choose all answers that are correct.They occur a day or two after an earthquake.They cause the ocean to briefly drain away from the shore.They can travel as fast as 500 miles per hour.They are measured by how far they travel.Which characteristics of tsunamis are true?How does the physical environment of Southeast Asia affect human activity?Choose all answers that are correct.The location and trade activity within the Strait of Malacca have made Singapore an important port.The cool climate causes monsoon winds to blow across the region, bringing rain for crops.Both tsunamis and typhoons have caused thousands of deaths over the years.The Mekong River flows through five mainland countries and has a basin that supports productive agriculture.Which religion spread and flourished throughout Southeast Asia as a result of trade from the thirteenth through the seventeenth centuries?DaoismChristianityConfucianismIslamWhich statements accurately describe recent population density and shifts in Southeast Asia?Choose all answers that are correct.Indonesias capital of Jakarta has become a megalopolis.The greatest population densities are on the coasts, along the rivers, and in deltas.Overcrowding has pushed many people to migrate from urban to rural areas.Many city people are very poor and live in urban slums.Which term refers to South Asias unique geographical position in Asia?atollsubcontinentdeltaalluvial plain Escribe las partes de la clula:Doy corona explain with short answer about thorni bushes Two cars leave towns 750 kilometers apart at the same time and travel toward each other. One car's rate is 12 kilometers per hour less than the other's. If theymeet in 5 hours, what is the rate of the slower car?Do not do any rounding. What happened to Hawaiis debt when the US annexed it? Why might this be important to know? how do you explain the Renaissance started from Italy Someone plz help me :( tabla de geologia de puerto rico I need to solve for x Which of the following statements best describes a benefit of sexual reproduction?It creates many offspring in a short amount of time.ABIt prevents mutations from being passed on to offspring.It results in diversity of the species that enhances the probability of survival.DIt ensures the offspring will receive only the best traits from each of the parents. sadiya, who owns a dance studio, consistently reminds her employees that dance lessons are a luxury for customers, so they should be both informative and fun. by making these statements, sadiya is What type of government is described below?This government has a king or queen AND a constitution that limits their power.Group of answer choicesConstitutional MonarchyAbsolute MonarchyAbsolute Democracy en que ano se fundo la colonia de virginia Please help out with this question A fishing boat radioed the Coast Guard for a helicopter to pick up a sick crew member. At the time of the message, the boat is 660 kilometers from the helicopter and heading toward it. The average speed of the boat is 30 kilometers per hour, and the average speed of the helicopter is 300 kilometers per hour. How long will it take the helicopter to reach the boat Read these sentences from the text. By afternoon, his stomach was growling loudly, so he sat down in a nearby field to eat his lunch. The warm sun stroking his cheek and the soft breeze whispering in his ears made him drowsy. What does the phrase "warm sun stroking his cheek and the soft breeze whispering in his ears" mean? 0 A. Someone was touching the prince's head while he was sleeping B. The sun and breeze were especially strong that afternoon. C. The sun and breeze were both like a gentle person. D. The prince was not used to sleeping outside. can some one tell the answer asap How is starch produced in plants?? How u do this djiejejeoeowoekrkk