Is the ability to evaporate a physical or chemical property?

What do destructive forces do

mrs_skeptik [129]

Answer:

they destroy or break stuff i think lol hope this helps

Explanation:

6 0

2 years ago

Read 2 more answers

Molar mass for (NH4)2SO4

irga5000 [103]

Answer:

132.13952

Explanation:

There are two Nitrogen

8 Hydrogen

1 Sulfur

4 Oxygen

3 0

3 years ago

During active transport, molecules move from areas of ______________ to _______________. This requires the use of _________.

MissTica

Molecules move from areas of low concentration to areas of high concentration. This requires the use of energy.

8 0

3 years ago

A student performs the following lead extraction to test the stoichiometric method and to determine the efficiency of the reacti

Liono4ka [1.6K]

Theoretical yield produced is 31.8 gram and the percentage yield is 62.27%.

The zinc (Zn) is more reactive than lead (Pb). So that zinc loses electrons more easily than lead .

And the electrons of Zn are transfer to lead in this reaction .

This question is a limiting reactant question .

And For limiting reactant questions so that we need to determine that how much product can be produced by all reactant .

Zinc and Lead (II) nitrate react to form Zinc Nitrate and Lead.

Zn + Pb(NO₃)₂ → Zn(NO₃)₂ + Pb

Now we have- Weight of Pb(NO₃)₂ = 49.5 g

molar mass of Pb(NO₃)₂ = 331.2 g

now moles of Pb(NO₃)₂ = 49.5 ÷ 331.2 = 0.15 moles

Moles of Pb consumed = 1 × 0.15 = 0.15

moles mass of Pb consumed = 0.15 × 207.2 = 31.8 gm

Here Zn is in excess so that lead(II) nitrate is a limiting reactant.

(a) Theoretical yield of lead -

moles of Pb produced = 0.15 × 1 = 0.15 moles

molar mass of Pb = 207.2g

mass of Pb produced in reaction = 0.15 × 207.2 = 31.08 g

theoretical yield = 31.8 gram

(b) After separating the lead by filtration -

obtained lead = 19.8gm

Percentage yield = 19.8 ÷ 31.8 ×100 = 62.27%

so that after separating the lead the percentage yield is 62.27%.

So, After applying the concepts of stoichiometric method the theoretical yield produced came out to be 31.8 gram and the percentage yield came out to be 62.27%.

Learn more about theoretical yield here:

brainly.com/question/2506978

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6 0

1 year ago

at 25c, 13.0 mg of co dissolves in 500g of water when the partial pressure of co is 0.968 bar. what is the henry's law constant

Olin [163]

Answer:

K = 9.59x10⁻⁴ m/bar

Explanation:

To do this, we need to write the Henry's law which is the following:

C = P*K (1)

K is the constant of the henry's law

C is the concentration of the solution

P is the pressure.

We have data for pressure which is 0.968 bar, and we need to calculate the concentration.

Concentration of any solution is calculated with the expression of molarity, which is:

C = n/V (2) m = n/kg water

The volume of this solution, will be the volume of water. Assuming density of water = 1 g/mL we can say that 500 g of water = 500 mL of water or 0.5 kg of water. But this is a solvent, so, we will calculate the molality instead of molarity

The moles are calculated with:

n = m/MM (3)

The molar mass of CO is:

MM CO = 12 + 16 = 28 g/mol

Now, let's use expression (3), (2) and finally the (1) to get the constant:

n = (13/1000) / 28 = 4.64x10⁻⁴ moles

Using expression (2), we will calculate the molality:

m = 4.64x10⁻⁴ / 0.5 = 9.28x10⁻⁴ m

Finally, from (1) we solve for K:

K = C/P

K = 9.28x10⁻⁴ / 0.968

K = 9.59x10⁻⁴ m/bar

8 0

2 years ago