Respuesta :

rahmant

Answer:

45g

Explanation:

Use the Mole = Mass x Mr equation:

Rearrange the above equation to find mass,

Mass = 2.5 moles x 18 (Mr of H₂O) = 45g

Therefore answer is 45g

mamyamirah

Answer:

Given

number of moles (n) =2 . 5 mol

R.tc maas of H2O (m) =?

sln

H2O =(1x2+16)

=18g/mol

n=m/mr

m=nxmr

m=2.5x18

m=45g

mass of water is 45g

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