2 years ago

Explain how you can determine the number of atoms or ions in a given mass of a compound

Chemistry

1 answer:

Paraphin [41]2 years ago

8 0

Answer:

You would Multiply the mass of one mole of each element by the ratio of that element to one mole of the compound.

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The main difference between gases and liquids is that in gases A.the molecules are moving faster b.the forces between molecules

mestny [16]

I believe the answer would be A

3 0

2 years ago

Nitrogen and hydrogen combine to form ammonia in the Haber process. Calculate (in kJ) the standard enthalpy change ΔH° for the r

PolarNik [594]

Answer: -105 kJ

Explanation:-

The balanced chemical reaction is,

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

The expression for enthalpy change is,

$\Delta H=\sum [n\times B.E(reactant)]-\sum [n\times B.E(product)]$

$\Delta H=[(n_{N_2}\times B.E_{N_2})+(n_{H_2}\times B.E_{H_2}) ]-[(n_{NH_3}\times B.E_{NH_3})]$

$\Delta H=[(n_{N_2}\times B.E_{N\equiv N})+(n_{H_2}\times B.E_{H-H}) ]-[(n_{NH_3}\times 3\times B.E_{N-H})]$

where,

n = number of moles

Now put all the given values in this expression, we get

$\Delta H=[(1\times 945)+(3\times 432)]-[(2\times 3\times 391)]$

$Delta H=-105kJ$

Therefore, the enthalpy change for this reaction is, -105 kJ

8 0

3 years ago

What’s that’s balanced out

stiks02 [169]

Blank 1: nothing (to keep 2 total nitrogen)
blank 2: 3 (to make 6 total hydrogen)
blank 3: 2 (to make 2 total nitrogen and 6 total hydrogen)

hope this helps!! :)

7 0

3 years ago

PLSSS HELP I AM STUCK ON THIS PROBLEM!!!

DENIUS [597]

Answer:

i can't read it.. maybe upload a visible picture?

6 0

2 years ago

PLEASE HELP :)) WILL GIVE BRAINLIEST

hjlf

Answer:

the answer is true

5 0

3 years ago