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3 years ago

Determine the volume of a cereal box that has a mass of 549.98 g and density of 1.69 g/cm3

Chemistry

1 answer:

lisabon 2012 [21]3 years ago

8 0

Answer:

I used a calculator to calculate the volume:

the volume formula is V =m

/ρ

the answer is 325.43195266272 cubic meter, or about 325.43

Explanation:

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Answer:

The concentration of the most dilute solution is 0.016M.

Explanation:

First, a solution is prepared and then it undergoes two subsequent dilutions. Let us calculate initial concentration:

$[Na_{2}SO_{4}]=\frac{moles(Na_{2}SO_{4})}{liters(solution)} =\frac{mass((Na_{2}SO_{4}))}{molarmass(moles(Na_{2}SO_{4}) \times 0.100L)} =\frac{2.5316g}{142g/mol\times 0.100L } =0.178M$

First dilution

We can use the dilution rule:

C₁ x V₁ = C₂ x V₂

where

Ci are the concentrations

Vi are the volumes

1 and 2 refer to initial and final state, respectively.

In the first dilution,

C₁ = 0.178 M

V₁ = 15 mL

C₂ = unknown

V₂ = 50 mL

Then,

$C_{2}=\frac{C_{1} \times V_{1} }{V_{2}} =\frac{0.178M \times 15mL}{50mL} =0.053M$

Second dilution

C₁ = 0.053 M

V₁ = 15 mL

C₂ = unknown

V₂ = 50 mL

Then,

$C_{2}=\frac{C_{1} \times V_{1} }{V_{2}} =\frac{0.053M \times 15mL}{50mL} =0.016M$

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3 years ago

Determine the volume of a cereal box that has a mass of 549.98 g and density of 1.69 g/cm3​

Determine the volume of a cereal box that has a mass of 549.98 g and density of 1.69 g/cm3