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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

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.

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

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

The properties of water include the following:

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

Answer:

gas ; methane , ethane  

liquid ; octane , hexane

Explanation;

i cant find solid dear

pls help anyone with an example of a  solid alkanes

Answer:

141.8g

Explanation:

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

Explanation:

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

Answer:

10 grams of hydrogen

Explanation:

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

Answer:

4

Explanation:

because use the molar ratio of

ca:h2o

1:2

2;4

so u times it by 2 .

hope this helps:)

Answer:

False.

I just got it right, lol.

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 :)

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

Answer:

A) Phosphorus

Explanation:

Look At Question 5) On The Answer Key

The element phosphorus has the greatest 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

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) =

Answer:

Magnitude

Explanation:

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

Answer:

Meiosis

Explanation:

.bnsksksksjabsn...

Answer:

sana makatulong po sainyo

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] ✅

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

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.

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

Answer:

b

Explanation:

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

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.

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

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.

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

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.