Chemistry College

HELPPPPPP
Calculate the frequency of light with a wavelength 559nm​

Answers

Answer 1

Answer:

Refer to the attachment

HELPPPPPPCalculate The Frequency Of Light With A Wavelength 559nm

Related Questions

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

which among the materials have a varying amount of components are they compounds or mixtures​

Answers

Answer:

Matter can be broken down into two Zalo categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.

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.

Suppose you did the lab and someone came and said your unknown acid sample was
actually HCl instead of H2SO4. Everything else remains the same; the standard acid was H2SO4,
the base was NaOH. What would change in your final calculation of the unknown acid
concentration

Answers

Answer:

H2SO4

Explanation:

because it's not more acidic

         Both sulfuric acid and hydrochloric acid are potent acids, but hydrochloric acid is stronger. Because HCl is monoprotic and H2SO4 is diprotic, they differ mostly in their acid types.

Can HCl be substituted for H2SO4?

     Instead of using hydrochloric acid, sulphuric acid (H 2 SO 4) is preferred because: This acid is commonly utilized for a variety of neutralization reactions. Sulphuric acid is more potent than all other acids and is also simpler and safer to use. Even if there is a risk for negative reactions, they are uncommon.

      The majority of the time because it is for a redox reaction or titration in which HCl would react to produce chlorine on its own. You could use phosphoric or sulfuric acid.

       In this situation, H 2 SO 4 is preferable to HCl. Due to the considerable acidity of H 2 SO 4, the solution is made to be more acidic than HCl. As a result, the findings of titration using H 2 SO 4 are more precise. H 2 SO4 generates two hydronium ions, whereas HCl only generates one.

         It shows how many protons split apart to create hydronium ions. The acid will be more potent the lower the pKa value. Therefore, we can conclude that HCl is more acidic than H2S O 4.

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How many molecules of carbon dioxide and how many molecules of water would be produced from 4 molecules of methane (CH4) reacting with 8 molecules of oxygen (O2)

Answers

Answer:

4

Explanation:

water would be produced from 4 molecules of methane (CH4) reacting with 8 molecules of oxygen (O2)

The products of the combustion of hydrocarbon are 4 molecules of carbon dioxide and 8 molecules of water.

What is the combustion reaction?

A combustion reaction can be described as a reaction that produces fire and takes place at a high temperature. It is an exothermic reaction as well as a redox reaction that usually takes place between a fuel and mostly oxygen gas.

Examples of Combustion Reactions such as during the combustion of 4 molecules of methane reacting with 8 molecules of oxygen gas to give carbon dioxide and two molecules of water.

[tex]4CH_4 + 8O_2\longrightarrow 8H_2O + 4CO_2[/tex]

Oxygen is the essential reactant for combustion because the combustion is not possible in the absence of oxygen. Complete combustion takes place when a fuel burns completely to produce heat with oxygen and carbon dioxide.

The burning of wood fuels in the presence of air is an example of combustion. The carbon present in wood reacts with oxygen gas in the air to liberate heat and form gaseous products.

Learn more about combustion reaction, here:

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State TRUE or FALSE : Synthetic fibers resists fire.​

Answers

true

All fabrics will burn, but some are more combustible than others.

hope it helps

A particular beer is 65.0% ethanol by volume . If a single bottle of beer contains a total of 750.0 mL of beer, what volume, in mL of ethanol (C₂H₆O), are present in the bottle?
SHOW CONVERSION

Answers

The volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L

HOW TO CALCULATE VOLUME OF ETHANOL:

According to this question, a particular beer is 65.0% ethanol by volume. This means that the beer contains 65/100 of ethanol.

If a single bottle of beer contains a total of 750.0 mL of beer, the volume of ethanol in the bottle is calculated as follows:

= 65/100 × 750

= 65 × 7.5

= 487.5mL

Therefore, volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L

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What happens to excess heat produced in the muscle during contraction and relaxation

Answers

Answer:

Calcium is then pumped back into the sarcoplasmic reticulum breaking the link between actin and myosin.

Explanation:

Actin and myosin return to their unbound state causing the muscle to relax. Alternatively relaxation (failure) will also occur when ATP is no longer available.

Synthetic reactions in Citric Acid Cycle

Answers

★ « Synthetic reactions in Citric Acid Cycle » ★

The overall reaction for the citric acid cycle is as follows: acetyl-CoA + 3 NAD+ + FAD + GDP + P + 2H2O = CoA-SH + 3NADH + FADH2 + 3H+ + GTP + 2CO2.

Many molecules in the citric acid cycle serve as key precursors for other molecules needed by cells.

hope it is

write the electronic configuration of iron in fecl2 and fecl3

Answers

Ferrus is a transition metal.

FeCl_2

Valency of Fe is 2 .Hence Z=26-2=24

Electronic configuration is given by

[tex]\\ \sf\longmapsto [Fe]^{2+}=1s^22s^22p^63s^23p^64s^23d^4[/tex]

FeCl_3

Valency of Fe is 3Hence Z=26-3=23

Electronic configuration is given by

[tex]\\ \sf\longmapsto [Fe]^{3+}=1s^22s^22p^63s^23p^64s^23d^3[/tex]

How do you prepare a demi-glace?

Answers

Answer:

Explanation:

sory i dont know

Demi-glace is a classic element of French cuisine. This dark brown sauce is made by reducing broth until it's thick and packed with flavor. It can be made from beef stock, chicken stock, or even vegetable stock. The traditional French version is made with veal.

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)

How many molecules of NaCl are there per mL of the solution?

Answers

Explanation:

Nacl is an ionic compound, so there are no molecules only formula units please mark me brainlist

High temperatures inside Earth form

melted rock.

fossils.

soil.

minerals.

Answers

Answer:

minerals

Explanation:

Hope this helps

helpppppppppppppppppppppp

Answers

Answer:

The process in which plants release water through their leaves back into the air

Explanation

Answer:

The process in which plants release water through their leaves back into the air.

Hope this helps!

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:

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

Please help! I will give 100 pts and brainliest if it is good.

Answers

Answer:

group 1 element 6

group 2 element 3

group 11 element 1

group 14 element 2

group 17 element 4

group 18 element 5

Explanation:

Answer:

Explanation:

group 1 element 6

group 2 element 3

group 11 element 1

group 14 element 2

group 17 element 4

group 18 element 5

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:

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

5. Calculate the mass percent of carbon in C3H8

Answers

Answer: How to calculate the mass percent by using these instructions

1.The molar mass is the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mol).

2.The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of the constituent atoms.

Explanation:

A flask of water is sealed with a balloon and heated to various temperatures on a hot plate

Answers

Answer:

What is the question?

Explanation:

You just gave a statement.

Answer:

it will increase

Explanation:

3. Compare What is the
difference between a
chromosome and a
chromatid?
(Please answer in a simple sentence)

Answers

Answer:

A chromosome is a thread-like structure present in the nucleus  that is made up of a single molecule of DNA and proteins, carrying some or all genetic materials of an organism. A chromatid is an identical half of a duplicated chromosome

Explanation:

Can water molecules form ions by
themselves?

Answers

I don’t think so nope
No it does not because it has no density and when there’s no density they don’t form ions by themselves

Which property describes a material's ability to conduct heat?

Answers

Answer )
Thermal conductivity

Explanation)

Thermal conductivity is the ability of a material to conduct heat, and it represents the quantity of thermal energy that flows per unit time through a unit area with a temperature gradient of 1° per unit distance.

Which is not a type of nuclear decay?
A. Zeta
B. Gamma
C. Alpha
D. Beta

Answers

Answer:

The answer is Zeta

Explanation:

The three types of nuclear decay are Gamma, Beta, and Alpha.

Low tides are located at___

A an C

A an B

B an D

Answers

Answer: A and C

Explanation:

Low tides occur in locations at 90 degree angles to the moon. Tidal cycles have the same length as the lunar day, 24 hours and 50 minutes. In this time span, most locations will experience two high tides, when the location is close to and far from the moon, and two low tides. Sides A and C are angled 90 degrees from the moon.

Hence, low tides are located at A and C.

Answer:90 degree angles to the moon.

Explanation:

Consider:
2Al (s) + 3Cl2 (g) ----> 2AlCl3 (s) ΔH=-1390.81 kJ

Which of the following correctly describes he magnitude and direction of the enthalpy change when 10.0g of AlCl3 forms?

a. 104.4 kJ, exothermic
b. 52.2 kJ, exothermic
c. 26.1 kJ, exothermic
d. 52.2 kJ, endothermic
e. 26.1 kJ, endothermic

Answers

Answer:

The answer is B.

Explanation:

1 mole of AlCl3 = 27 + 3*35.5 grams = 133.5 grams

1 mole / 133.5 = x / 10         Cross multiply

133.5 x = 1 * 10

x = 10 / 133.5

x = 0.0749 moles

Delta H when written the way it is, is on the left side and since it is negative, the reaction must give away 1390.81 kj. The reaction is exothermic.

So now you get the answer between AB and C by setting up a ratio.

2/0.0749 = -1390.81 / x          Cross multiply

2x = 0.0749 * -1390.81

2x =- 104.18                             Divide both sides by 2

2x//2 = -104.18 / 2

x = -52.09

B

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%.

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the pH of soil X is 7.5 while that of soils Y is 4.5 which of the two coils should be treated with powered talked to adjust its PH​

Answers

Answer:

Soils Y

Explanation:

• The soils with lower pH are acidic so they react readily with powdered.

[tex].[/tex]

Answer:

SOIL Y

the soil with lower ph are acidic

can anyone heelp me pls pls

Answers

Answer:

Lotion=liquid

suspension=semisolid

capusule=solid

Explanation:

what happens when co2 dissolves in water​

Answers

CO2 is in acidic gas so when it’s mixed with water it forms a weak acid called carbonic acid , It’s a really common acid and it only comes in solution form and it is found in aerated drinks like carbonated sodas and soft drinks.
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