2 years ago

Please help asap

1 answer:

Helen [10]2 years ago

4 0

C. carbon
sodium is an
oxygen is o
cl is chlorine

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BARSIC [14]

Answer:

I' really don't know I'm sorry

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2 years ago

Vanyuwa [196]

Answer: 770 g water are needed to dissolve 27.8 g of ammonium nitrate $NH_4NO_3$ in order to prepare a 0.452 m solution

Explanation:

Molality : It is defined as the number of moles of solute present per kg of solvent

Formula used :

$Molality=\frac{n\times 1000}{W_s}$

where,

n= moles of solute

Moles of $NH_4NO_3=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{27.8g}{80.0g/mol}=0.348moles$

$W_s$ = weight of the solvent in g = ?

$0.452=\frac{0.348\times 1000}{W_s}$

$W_s=770g$

Thus 770 g water are needed to dissolve 27.8 g of ammonium nitrate $NH_4NO_3$ in order to prepare a 0.452 m solution

5 0

2 years ago

coldgirl [10]

You did not provide any options.

6 0

2 years ago

Vladimir [108]

C3H8 + O2 (please give me brainliest$

4 0

2 years ago

Ierofanga [76]

Answer:

3.785412e+7cm³

Explanation:

Have a nice day.

3 0

2 years ago