a molecule is a neutrally charged group of atoms held together by one or more _____ bonds.

Answers

Answer 1
a molecule is a neutrally charged group of atoms held together by one or more COVALENT bonds

Related Questions

Compare the properties of the four states of matter in terms of particle arrangement, particle motion, shape, size, and compressibility.

Answers

Particle arrangement, shape, and size of the four states of matter generally decreases from solids to plasma, whereas particle motion and compressibility increases from solids to plasma.

What are the four states of matter?

The four states of matter are:

solidliquidgasplasma

Comparison of the properties of the four states of matter in terms of particle arrangement, particle motion, shape, size, and compressibility can be summarized as follows:

particle arrangement - orderliness decreases from solids to plasma particle motion - increases from solids to plasmashape - solids have definite shapes, whereas liquids, gases and plasma have no definite shapesize - solids have the largest size while plasma have the smallest sizecompressibility - solids are least compressible while plasma is most compressible

Therefore, the particle arrangement, shape, and size of the four states of matter generally decreases from solids to plasma, whereas particle motion and compressibility increases from solids to plasma.

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please ill mark u brilliant
+ 10 points

Answers

Sodium fluoride has a high melting point due to hydrogen bonding in it's aqueous solution and in it's free state the fluoride ions being smaller are closely packed so NaF has a higher inter ionic attraction between Na+ and F-

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Part g
consider the melting points of sugar and salt, as well as the states of sugar, salt, and oil
at room temperature. what can you conclude about the attractive forces between
particles in the three substances?

Answers

Salt and sugar have strong attractive forces whereas oil has weak attractive forces between particles.

What type of attractive forces present in salt, sugar and oil?

The attractive forces between particles in the salt and sugar substances have strong because of its solid state while on the other hand, the attractive force between particles of oil is weak because of its liquid state.

So we can conclude that salt and sugar have strong attractive forces whereas oil has weak attractive forces between particles.

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The strength of the attractive forces between the molecule of oil, sugar and salt increases from oil to sugar to salt.

What is melting point of a substance?

The melting point of a substance is the temperature at which the solid substance melts.

The melting point of a substance is a constant for a pure substance.

The higher the attractive forces between the molecules of a substance, the higher the melting point will be.

Between the three substances, oil has the lowest melting point while salt has the highest melting point.

Therefore, the strength of the attractive forces between the molecule of oil, sugar and salt increases from oil to sugar to salt.

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moles
5.
A mixture of gases at a total pressure of 105 kPa contains N2, CO2, and O2. The partial pressure of the O2 is 21 kPa and the
partial pressure of the N₂ is 81 kPa. What is the partial pressure of the CO₂? (3 pts)

Answers

Answer:

the daddy and Video Bhai have a

Explanation:

for and or for the if or as or as there have no a of option to go with you 6th and I would love from you to help out in any event that I am from the only reason you would be so close and to me million times is the fact I am from the the only reason you have to do it the way I want it is the best way for us and we are not me million people that are not got to me it's not like they were in a bad place and they didn't want me million other people in my world who made me think about you are

Almost All of the Energy reaching the Earth from the sun is in the form of ________.​

Answers

Answer:

solar radiation

Explanation:

Describe the overall enthalpy of the chemical reactants compared to the enthalpy of the chemical products in the combustion of propane.

Answers

Answer:

A thermochemical equation for the combustion of propane (C3H8)(C3H8) is written as follows:

C3H8(l)+5O2(g)→3CO2(g)+4H2O(g);ΔH∘rxnC3H8(l)+5O2(g)→3CO2(g)+4H2O(g);ΔHrxn∘ = -2202.0 kJ/mol

The value given for ΔH∘rxnΔHrxn∘ means that:

a. the reaction of one mole of propane absorbs 2202 kJ of energy from the surroundings.

b. the reaction is endothermic.

c. the enthalpy of formation of propane is 2202 kJ/mol.

d. the reaction of one mole of propane releases 2202 kJ of energy to the surroundings.

e. None of these.

The pH of a solution is 0.50. To two decimal places, what is the hydrogen ion concentration of that solution

Answers

Explanation:

pH= –log¹⁰[H+]

0.50= –log¹⁰[H+]

log¹⁰[H+]=0.50

take the antilog of 0.50

[H+]= 3.16moldm-³

2.58g of a gas has a volume of 3.97L at 745 mmHg and 21°C determine the molar mass of the gas what might be? ( first find n from the ideal gas law equation; then plug it into N = m/M or M = m/n)

Answers

The molar mass of the gas with the given mass and volume at the given temperature and pressure is 16.00g/mol.

What is the molar mass of the gas?

From the Ideal gas law or general gas equation;

PV = nRT

Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.08206 Latm/molK )

Given that;

Temperature T = 21°C = (21 + 273.15)K = 294.15KPressure P = 745 mmHg = (745/760)atm = 0.98026atmVolume of the gas V = 3.97LMass of gas m = 2.58gAmount of gas n = ?

First, we determine the amount of gas;

PV = nRT

n = PV / RT

n = ( 0.98026atm × 3.97L ) / ( 0.08206 Latm/molK × 294.15K )

n = 3.8916Latm / (24.137949Latm/mol)

n = 0.1612mol

Molar Mass = Mass of the gas / Amount of the gas

Molar Mass = m / n

Molar Mass = 2.58g / 0.1612mol

Molar Mass = 16.00g/mol

Therefore, the molar mass of the gas with the given mass and volume at the given temperature and pressure is 16.00g/mol.

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What is the correct formula for Triphosphorous hexachloride?

Answers

Answer:

P3

Explanation:

Im pretty sure hope this helps

How many half-lives of time have passed when only a little more than 3% of a sample
original C-14 remains?

Answers

Answer:

5.06 half lives

Explanation:

1/2 ^n  = .03             (.03 is 3% in decimal)

                         log both sides

n log 1/2 = log .03

n = 5.06  half lives

The diagram below shows three kettles with their powers and the time they take to boil 500cm3 of water. How much energy is transferred (in kilojoules, kJ) by the 1.4kW kettle while it boils the water?

Answers

The energy transferred is given as the product of power and time. The 1.4 kW kettle with boiled water produces 378 kJ of energy.

What is energy?

Energy is the quantitative property that determines the work done by the body in the form of heat and light.

The image showing the kettles with time and power is attached below.

Given,

Power of the kettle = 1.4 kW

Time taken = 4.5 minutes

If power = energy ÷ time

Then, energy = power × time

= 1.4 × 0.075

= 0.105 KWh

Therefore, 0.105 kWh or 378KJ is the energy transferred.

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Please help me answer this

Answers

Answer:

1.01

Explanation:

you have to trust me

Which of the following materials fall in the category of a ‘‘pure substance’’?


Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, brick, wood, Air​

Answers

Answer:

1) Ice, iron, calcium oxide and mercury are pure substances since they contain particles of only one kind of matter.

2) In contrast, milk, hydrochloric acid (hydrogen chloride gas dissolved in water), brick and air cannot be called pure substances because they consists of particles of more than one kind of matter.

20.4 L of 0.650 M HCI reacts with 36L of KOH solution of unknown concentration. What is the molarity of the KOH solution?

Answers

Answer: 0.37 M

Explanation:

[tex]M_{A}V_{A}=M_{B}V_{B}\\(20.4)(0.650)=M_{B}(36)\\M_{B}=\frac{(20.4)(0.650)}{36}=\boxed{0.37 \text{ M}}[/tex]

A balloon containing 0.500 mol ar at 0.00°c and 65.0 kpa pressure is expanded by adding more argon. formula: pv = nrt (r = 8.317 l•kpa/mol•k) what is the original volume of the gas? l

Answers

The original volume of the gas would be 17.45 L.

Ideal gas equation

For an ideal gas:

  PV = nRT, where P = pressure, V= volume, n = number of moles, T=temperature, and R = constant = 8.317 l•kpa/mol•k

In this case, n = 0.500 mole, T = 273K, P = 65.0 kpa.

Thus:              V = nRT/P = 0.5 x 8.317 x 273/65 = 17.45 L

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9. (05.06 mc)
during an experiment, the percent yield of calcium chloride from a reaction was 80.34%. theoretically, the expected amount should have been 115 grams. what was the actual yield
from this reaction?
caco, + hc - cacl + co, + h20 (5 points)
a. 090.1 grams
b. 92.4 grams
c. 109.2 grams
d. 115.3 grams

Answers

The actual yield of the experiment given the data from the question is 92.4 g (Option B)

What is percentage yield?

This is the ratio of the actual yield to the theoretical yield of a given reaction multiplied by 100

Percentage yield = (Actual / Theoretical) × 100

What is actual yield?

This is the amount obtained from the expriment procedures

What is theoretical yield?

This is the amount obtained from simple calculations as regarding the experiment.

How to determine the actual yieldPercentage yield = 80.34%Theoretical yield = 115 gActual yield =?

Actual yield = percentage yield × theoretical yield

Actual yield = 80.34% × 115

Actual yield = 0.8034 × 115

Actual yield = 92.4 g

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how many grams of hcl can dissolve in 200 g of water at 60 c?

Answers

The solubility curve is a plot of solubility against temperature.

What is solubility?

The term solubility refers to the amount of substance that dissolves in solution at a given temperature. Hence, the solubility curve is a plot of solubility against temperature.

Thus, from the solubility curve (not shown) the amount if HCl dissolved can be obtained hence the question is incomplete.

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Generally, what is the effect of increased temperature on the rate of dissolution of a solid solute?

Answers

Answer:

Increases

Explanation:

The general effect we see as temperature increases is that rate of dissolution of a solid solute increases,

Therefore, we can say that :

Temperature ∝ Rate of dissolution

The price of a gallon of almond milk increases from $5 to $10, so people start buying more oat milk as an alternative. this causes a shift to the left in the demand for almond milk. demand for almond milk ____________ because of a change in ___________.

Answers

The demand for almond milk decreases because of a change in price from $5 to $10. Details about demand can be found below.

What is demand?

Demand refers to the amount of goods a consumer is willing and able to buy at a given price and at a particular time.

Several factors can affect the demand of a particular good. According to this question, the price of a gallon of almond milk increases from $5 to $10, so people start buying more oat milk as an alternative.

Therefore, it can be said that the demand for almond milk decreases because of a change in price from $5 to $10.

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Answer:

decreased:related goods

Explanation:

ik it seems like decreased:income but i just took the test twice and ik for a fact its c not d

Which is one possible way that animals would most likely be affected by this action?

Some animals would adapt.
Some animals would go extinct.
Some animals would evolve.
Some animals would be forced to migrate.

Answers

Some animals would be forced to migrate due to cutting of forest , Option D is the correct answer.

The complete question is

Humans clear-cut a forest. Which is one possible way that animals would most likely be affected by this action? Some animals would adapt. Some animals would go extinct. Some animals would evolve. Some animals would be forced to migrate.

What is deforestation ?

Deforestation means cutting down trees of the forest for wood , or for making more space for living.

Deforestation leads to destruction of habitats of animals .

The balance of the nature gets disturbed , the sea and water bodies get dried up , leading to no water for the animals in the forest.

Animals need big bushes and trees to hide and live.

The Ecosystem gets destroyed because of the cutting of trees by human and so this has lead the animals to migrate.

Therefore Option D is the correct answer.

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Somebody please help meeeeeeeeee!! (The question is underneath the table)

Answers

Answer:

1.)

Parent 1:
   Ff (genotype) and free earlobes (phenotype)

Parent 2:
   ff (genotype) and attached earlobes (phenotype)

2.)

Ff and ff (possible genotypes)

Free earlobes and attached earlobes (possible phenotypes)

Explanation:

Phenotypes are the observable traits an organism displays.

Genotypes are the genetic sequences organisms' possess that code for particular traits.

I am assuming that heterozygous individuals (Ff) display the dominant trait (free earlobes). As such, one parent has the Ff genotype and the free earlobe phenotype. The other parent has the recessive genotype (ff) and phenotype (attached earlobe).

50% of the children will have the same genotype and phenotype of one parent and the other 50% will have the same genotype and phenotype as the other parent.

None of the children will have the completely dominant genotype (FF).

Would the following be an example of a physical or a chemical change?
- Methane (natural gas) is combined with oxygen to produce heat.
Select one:
a. chemical
b. physical
c. neither

Answers

it is chemical change because chemical change occur when bonds are broken or formed between molecules or atoms.

In general the formation of a chemical bond lowers the _____ energy of a chemical system, leading to a _____ stable arrangement.

Answers

In general, the formation of a chemical bond lowers the potential energy of a chemical system, leading to a more stable arrangement.

What is potential energy?

Stored energy depends upon the relative position of various parts of a system.

In bond formation, atoms lose their potential energy to attain stability and heat is evolved. The bond formation is an exothermic reaction.

Atoms bond together to form compounds to attain lower energies than they possess as individual atoms.

A quantity of energy is equal to the difference between the energies of the bonded atoms and the energies of the broken atoms.

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Which law of thermodynamics relates most directly to the Law of Conservation of Energy?

Answers

Answer:

First Law of Thermodynamics

Explanation:

The first law of thermodynamics is literally another name for the law of conservation of energy.

calculate the mass of 3.5 moles of copper sulphate

Answers

Answer: 558.5545 g

Explanation:

The formula for a sulphate ion is [tex]\text{SO}_{4}^{\text{ }2-}[/tex], so the formula for copper sulphate is [tex]\text{CuSO}_{4}[/tex].

The atomic mass of copper is 63.546 g/mol.The atomic mass of sulfur is 32.065 g/mol.The atomic mass of oxygen is 15.994 g/mol.

This means the formula mass of copper sulphate is:

63.546+32.065+4(15.994)=159.587 g/mol.

So, in 3.5 moles, the mass is (159.587)(3.5)=558.5545 g

please answer ................

Answers

Answer:

Explanation:

i. SO2

ii. Na2O

When an automobile engine burns gasoline, what are the energy conversions? (Hint: there are three.)

Answers

Answer:

The release of energy from fuels is used to make other forms of

energy. When gasoline burns in a car engine, some of the

chemical energy in the gasoline is converted into heat. The heat

is converted into mechanical energy. The mechanical energy

moves the car .

if you know that I am right please mark it as brainliest

Answer:

It is asking for 3 energy conversions like Mechanical energy is one of them

Explanation:

How many
particles would
be found in a
2.74 g sample of
Beryllium sulfide?

Answers

Answer:

4.03 × 10²² particles of beryllium sulfide.

Explanation:

The formula to find the number of particles is:

Number of particles/atoms = number of moles × (6.02 × 10²³)

6.02 × 10²³ = Avogadro's number

But first, we will have to find the number of moles. This can be found using the formula:

Number of moles = mass ÷ Mr

  Mr of BeS = 9 + 32.1 = 41.1

  Number of moles = 2.74 ÷ 41.1 = 0.067 mol

Now that we know the number of moles, we can find the number of particles.

   Number of particles = 0.067 × 6.02 × 10²³

∴ Number of particles =  4.03 × 10²²

Answer:

4.03 × 10²² particles

Explanation:

Had the same question and got it correct.

how many principal energy levels are there

Answers

Answer:

There is an infinite number of Principal Energy Levels, see the answer for a full explanation

Explanation:

As stated above There is an Infinite number of principal energy levels, yet there are 4 main principles for principal energy; energy levels, sublevel, orbitals, and a number of electrons per sublevel.

On a summer day, you take a road trip through Death valley, california in an antique car.you start put at a temperature of 20*c, but the temperature in death valley will reach a peak of 51*c. The tires on your car can hold 15.6L of nitrogen gas at a starting pressure of 249 kPa the tires will burst wjen internal pressure (PB) reaches 269k kPa awnser the following queshtions and show your work
- how many moles of nitrogen gas are in each tire

Answers

The number of moles of nitrogen gas in each tire would be 1.595 moles

Ideal gas law

The ideal gas law is represented by the equation:

PV = nRT where P = pressure, V = volume, n = number of moles of gas, R = constant, and T = temperature.

In this case, P = 249 kpa, V = 15.6 L, R = 8.31, and T = 293 K (273 + 20).

n = PV/RT = 249 x 15.6/8.31 x 293 = 1.595 moles

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