How many molecules are in 7 g of H2O

Chemistry

2 answers:

SOVA2 [1]2 years ago

8 0

Answer:

2.342*10^23

Explanation:

# of molecules = Moles * NA

# of molecules = (Mass in grams) / (Molar Mass) * NA

Molar Mass of H2O = 18g/mol

Avogadro's number(NA) = 6.022*10^23

Now,

# of molecules = (7g/18gmol)*(6.022*10^23) = 2.342 * 10^23

Luda [366]2 years ago

5 0

Answer:

0.38

Explanation:its right bc it is

You might be interested in

How would the moon appear from earth if the moon did not rotate?

ivolga24 [154]

If the moon did not rotate we would see all hemispheres of the moon as it revolves around the Earth and not just the phases.

4 0

3 years ago

Give the electron confiuration of Chromium (Cr), atomic number 24.

nadezda [96]

<span>Chromium is a transition metal and it has 24 electrons and here is the orbital diagram. If we're going to make this short hand and make the electron configurationfor this we would make this 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d4 okay from now on every time you see 3d4 you're going to change it, we do not like 3d4.</span>

4 0

3 years ago

Read 2 more answers

Sulfonation of benzene has the following mechanism: (1) 2 H2SO4 ⇌ H3O+ + HSO4− + SO3 [fast] (2) SO3 + C6H6 → H(C6H5+)SO3− [slow]

ziro4ka [17]

Question is incomplete, complete question is as follows :

Complete Question : .Sulfonation of benzene has the following mechanism:

(1) 2 H2SO4 ⇌ H3O+ + HSO4− + SO3

[fast]

(2) SO3 + C6H6 → H(C6H5+)SO3−

[slow]

(3) H(C6H5+)SO3− + HSO4− → C6H5SO3− + H2SO4