ch
Heat depends on which factor?
how fast the molecules are vibrating
O how big the molecules are
how close the molecules are together
O none of the above

Answers

Answer 1

Answer:

Hello There!!

Explanation:

I believe the answer is how fast the molecules are vibrating.

hope this helps,have a great day!!

~Pinky~


Related Questions

Select the correct answer.
What does the empirical formula of a compound describe?
Ο Α. .
the type and number of atoms
OB.
the type and ratio of atoms
O C.
the number of atoms
OD
the type and mass of atoms
Reset
Next

Answers

Answer:

b

Explanation:

cause empirical formular is the elementary or the foundation for molecular formula and molecular formula depends on the empirical formula

Explain why the buffering action of these chemical reactions is limited by the present day rate of change for atmospheric CO2 concentration

Answers

Answer:

Due to increase in carbondioxide gas.

Explanation:

The buffering action of these chemical reactions is limited by the present day rate of change for atmospheric carbondioxide concentration because the the rate of atmospheric carbondioxide rises as compared to ancient atmospheric carbondioxide gas. Due to increase of human activities, the concentration of carbondioxide gas increases in the atmosphere which limits the buffering action of these chemical reactions so we can say that carbondioxide gas is responsible for its limited action.

How many atoms are in 0.432 g of KNO3? Round your answer to three significant
figures.
A…2.58 x 1021
B…7.10 x 10-27
C…0.00428
D…43.6

Answers

A

I did it and got this but it know the first one is right as it only missing of some point it will be calculator error and also the answer is to the power of 21.

hope this make sense :)

how a forensic scientist may match DNA of evidence to a particular crime?

Answers

Forensic scientists can compare DNA found at a crime scene (from blood or hair, for example) to DNA samples taken from suspects. If there is no match, they may be able to rule out that suspect. If there is a match, police will likely want to take a closer look.

How many grams of silver nitrate will be needed to produce 8.6 g of silver?

Answers

Answer:

13.5g of AgNO3 will be needed

Explanation:

Silver nitrate, AgNO3 contains 1 mole of silver, Ag, per mole of nitrate. To solve this problem we need to convert the mass of Ag to moles. Thee moles = Moles of AgNO3 we need. With the molar mass of AgNO3 we can find the needed mass:

Moles Ag-Molar mass: 107.8682g/mol-

8.6g * (1mol / 107.8682g) = 0.0797 moles Ag = Moles AgNO3

Mass AgNO3 -Molar mass: 169.87g/mol-

0.0797 moles Ag * (169.87g/mol) =

13.5g of AgNO3 will be needed

2 NaOH + H2SO4 2 H2O + Na2S04
a. How many grams of sodium sulfate will be formed if you start with 300 grams of sodium
hydroxide?

Answers

Answer:

532.5 grams

Explanation:

The balanced chemical equation of this reaction is as follows:

2NaOH + H2SO4 → 2H2O + Na2S04

From the above balanced equation, it shows that 2 moles of sodium hydroxide (NaOH) produces 1 mole of sodium sulfate (Na2SO4).

Using mole = mass/molar mass to convert mass to mole

Molar mass of NaOH = 23 + 1 + 16 = 40g/mol

mole = 300/40

mole = 7.5moles of NaOH

Since 2 moles of sodium hydroxide (NaOH) produces 1 mole of sodium sulfate (Na2SO4).

Then, 7.5 moles of NaOH will produce 7.5/2 = 3.75moles of Na2SO4.

mole = mass/molar mass

Molar mass of Na2SO4 = 23(2) + 32 + 16(4)

= 46 + 32 + 64

= 142g/mol

Mass of Na2SO4 = 3.75 × 142

= 532.5g

A solution in which the [H+] is 1.0 X 10-4 mol/L is said to be:

Answers

The answer would be Acidic (4.0) hope this helps!!

explain observation Made when anhydrous calcium chloride and anhydrous copper 2 sulphate are separately exposed to the atmosphere for much 2 days​

Answers

Calcium chloride is deliquescent.

If exposed to air, it will absorb sufficient water from the air to allow it to dissolve. After a short while, instead of a white lump, you will have a pool of clear liquid.

It is the gametes formation of a sex cells or reproductive cells.​

Answers

Answer:

Meiosis

Explanation:

.bnsksksksjabsn...

Answer:

sana makatulong po sainyo

How many liters of hydrogen gas will be produced at STP from the reaction of 5.159 x 1021 atoms of magnesium with 55.23 g of phosphoric acid (H3PO4)?

3 Mg + 2 H3(PO4) Mg3(PO4)2 + 3 H2

Answers

Answer:

0.190L of hydrogen may be produced by the reaction.

Explanation:

Our reaction is:

3Mg + 2H₃PO₄ →  Mg₃(PO₄)₂ + 3H₂

We need to determine the limting reactant. Let's find out the moles of each:

5.159×10²¹ atoms . 1 mol / 6.02×10²³ atoms = 0.00857 moles of Mg

55.23 g . 1 mol / 97.97 g = 0.563 moles of acid

2 moles of acid react to 3 moles of Mg

0.563 moles of acid may react to: (0.563 . 3) /2 = 0.8445 moles of Mg

Definetely the limting reactant is Mg.

As ratio is 3:3, 3 moles of Mg can produce 3 moles of hydrogen

Then, 0.00857 moles of Mg must produce 0.00857 moles of H₂

At STP, 1 mol of any gas occupies 22.4L

0.00857 mol . 22.4L / 1mol = 0.190L

another name for constant boiling mixture​

Answers

Answer:

Azeotrope

Explanation:

An azeotrope is a liquid mixture that has a constant boiling point and whose vapor has the same composition as the liquid

Another name for constant boiling mixture.

[tex]\sf\purple{Azeotrope.}[/tex] ✅

An azeotrope or a constant boiling point mixture is a mixture that has the same composition in liquid and vapour phase.

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]

mention two examples each of solid liquid and gaseous Alkanes​

Answers

Water gasoline ice your welcone

Answer:

gas ; methane , ethane  

liquid ; octane , hexane

Explanation;

i cant find solid dear

pls help anyone with an example of a  solid alkanes

The word habitable is defined as:

Answers

Please mark Brainliest

capable of being lived in : suitable for habitation.

providing conditions that are good enough to live in or on:
A lot of improvements would have to be made before the building was habitable.
Some areas of the country are just too cold to be habitable.

Examples of habitable in a Sentence

The house is not habitable.

The frigid Arctic is not habitable for amphibians and reptiles—or for humans, either, for that matter

A chemist has three different acid solutions. The first acid solution contains 15 % 15% acid, the second contains 35 % 35% and the third contains 80 % 80% . They want to use all three solutions to obtain a mixture of 190 190 liters containing 30 % 30% acid, using 2 2 times as much of the 80 % 80% solution as the 35 % 35% solution. How many liters of each solution should be used

Answers

Answer:

First solution = 133L

Second solution = 19L

Third solution = 38L

Explanation:

As we want to make 190L of a 30%=0.3 solution we can write:

190L*0.3 = a*0.15 + b*0.35 + c*0.80

Where a, b and c are the volume of first, second and third acid solutions, respectively.

The volume of c is twice volume of b:

c = 2b

And the volume of the 3 solutions is equal to 190L:

190L = a+b+c

190L = a+3b

190L*0.3 = (190-3b)*0.15 + b*0.35 + 2b*0.80

57 = 28.5-0.45b+0.35b+1.6b

28.5 = 1.5b

b = 19L

c = 2*19L

c = 38L

a = 190L - 19L - 38L

a = 133L

Use the reaction N2(g) + 3H2(g) 2NH3(g) to answer the following questions

a. 1 pt: What does Le Châtelier's principle predict would happen to the equilibrium conditions if N2(g) + 3H2(g) were added to the system?

b. 1 pt: What would happen to the equilibrium if the pressure were decreased?

c. 2 pts: Write the equation for calculating Keq

d. 3 pts: Calculate the value for Keq given the following concentrations

[NH3] = 6 M

[H2] = 4 M

[N2] = 3 M

Answers

Answer:

K

C

=

[N

2

][H

2

]

3

[NH

3

]

2

N

2

+3H

2

⇌2NH

3

=

(1.5×10

−2

)(3×10

−2

)

3

(1.2×10

−2

)

2

=

1.5×10

−2

×27×10

−6

1.44×10

−4

=

40.5×10

−4

1.44

=0.035×10

4

Which has more molecules in it 10g H, 0 or 10g NaCl*
A)010g of H0
B)10g of NaCl
C)They have the same number of molecules
D)Cannot be determined

Answers

10 grams of hydrogen

Answer:

10 grams of hydrogen

Explanation:

GIVE BRAINLIEST
Which property of water helps it maintain a relatively stable temperature?

Answers

The property of water that helps it maintain a relatively stable temperature is the presence of hydrogen bonds.

The properties of water

Water is an odourless, tasteless and colourless compound that is made up of hydrogen and oxygen atoms.

The properties of water include the following:

it is a polar solvent,

it has high specific heat capacity

High surface tension, and

Stable boiling and freezing points.

The stable temperature of water, that is the ability to have a constant boiling and freezing points, is as a result of the hydrogen bonds existing between the water molecules.

The hydrogen bonds gives water molecules ability to hold heat better than any other substance.

Learn more about water properties here:

https://brainly.com/question/18681949

Answer:   High specific heat capacity

Explanation:

I took the test

How many centimeters are in 5 miles? Hint: 1 miles = 5280 feet

Answers

804,672 centimeters ❤️‍

1. A light bulb is filled with 3.54 g of argon at 25 C and 725 mmHg. What is
the volume of this gas?

Answers

Answer: The volume of given gas is 2.27 L.

Explanation:

Given: Mass = 3.54 g

Temperature = [tex]25^{o}C[/tex] = (25 + 273) K = 298 K

Pressure = 725 mm Hg (1 mm Hg = 0.00131579) = 0.95 atm

As moles is the mass of substance divided by its molar mass.

So, moles of argon (molar mass = 40 g/mol) is as follows.

[tex]Moles = \frac{mass}{molar mass}\\= \frac{3.54 g}{40 g/mol}\\= 0.0885 mol[/tex]

Formula used to calculate the volume of given gas is as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

[tex]PV = nRT\\0.95 atm \times V = 0.0885 mol \times 0.0821 L atm/mol K \times 298 K\\V = 2.27 L[/tex]

Thus, we can conclude that the volume of given gas is 2.27 L.

What is the simplest whole number ratio of atoms in a molecule or formula unit called?
the molecular formula
the molar mano
the percent composition
the empirical formula

PLEASE HELPP

Answers

The empirical formula

how many moles are in 150 grams of water​

Answers

Answer:

Solution given:

H20=1+1+16=18grams

we have

1 mole of water =18grams

now

150grams of water=1/18*150=25/3 =8.33mole.

150 grams of water =8.33mole.

Note:

mole =given mass/actual mass of molecule/atom

1 mole of water is 18 grams.

Then,

150 grams of water,

→ 1/18 × 150

→ 25/3

→ 8.33333 . . .

Hence, 150 grams of water is 8.3 moles.

How many grams are in 2.000 moles of Cl2

Answers

Answer:

141.8g

Explanation:

because n(cl)=m(cl)/M(cl)

Anwser: 141.8g

Explanation:

The compounds that form from the bonding of the hydroxyl group (-OH) to a hydrocarbon are called the aldehydes.
True
False

Answers

i think its true, not 100% sure tho

Answer:

False.

I just got it right, lol.

If the pH of a solution is 3, its pOH is

Answers

Explanation:

If the pH of a solution is 3, its pOH is 14-3= 11

Why can’t neon store energy in this way?

Answers

Answer:

Neon is a noble gas, it is monoatomic in nature, which implies that it has only one atom present. If we compare neon with water, water has three atoms present, two hydrogen atoms and one oxygen atom. Hence water stores more energy than neon because it is polyatomic and contains chemical bonds.

Plutonium-196 has an atomic number of 78. It has ____ neutrons.

Answers

Answer:

118 neutrons

Explanation:

There are three subatomic particles in an atom namely: electron, neutron and proton. The mass number of an atom is calculated by adding the proton no. (atomic mass) + neutron no.

That is;

Mass no. = proton no. + neutron no.

This means that to obtain the neutron no. in the atom of an element, we subtract the no of protons or atomic mass from the mass number.

According to this question, Plutonium-196 is said to have an atomic number of 78. The mass no. is 196, hence, the number of neutrons is:

196 - 78

= 118 neutrons.

How many milliliters of 5.0 M NaOH are needed to exactly neutralize 40. milliliters of 2.0 M HCl?

Answers

Answer:

16mL

Explanation:

Using the following formula;

CaVa = CbVb

Where;

Where

Ca = concentration/molarity of acid (M)

Va = volume of acid (mL)

Cb = concentration/molarity of base (M)

Vb = volume of base (mL)

According to the information provided in this question;

Ca (HCl) = 2M

Cb (NaOH) = 5M

Va (HCl) = 40mL

Vb (NaOH) = ?

Using CaVa = CbVb

Vb = CaVa/Cb

Vb = 2 × 40/5

Vb = 80/5

Vb = 16mL

Given the reaction:
Ca + 2H,0→ Ca(OH)) + H2
How many moles of H,O are needed to exactly react with
2.0 moles of Ca

Answers

Answer:

4

Explanation:

because use the molar ratio of

ca:h2o

1:2

2;4

so u times it by 2 .

hope this helps:)

Which term is used to measure a star's brightness?​

Answers

Answer:

Magnitude

Explanation:

Astronomers define star brightness in terms of  magnitude (how bright the star appears from Earth)

Which element has the highest first ionization energy?

a. phosphorus
b. aluminum
c. sodium
d. calcium

Answers

Answer:

A) Phosphorus

Explanation:

Look At Question 5) On The Answer Key

The element phosphorus has the greatest first ionization energy.

What is the first ionization energy?

The first ionization energy of an element is the energy that is required to remove an electron from the outermost shell of an atom of the element.

We know that ionization energy decreases down the group but increases across the period thus the element phosphorus has the greatest first ionization energy.

Learn more about ionization energy:https://brainly.com/question/16243729?

#SPJ6

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