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2 years ago

Calculate the molarity of a 2.43 mol aqueous NaCl solution with a density of 2.00 g/mL.

Chemistry

1 answer:

anygoal [31]2 years ago

3 0

Answer:

You need to add more points people will not answer if its this low

Explanation:

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2 years ago

What is the density of a material if its mass is 32 grams and its volume is 8 milliliters

vagabundo [1.1K]

Answer:

4 kilograms/liters

Explanation:

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In a sample of solid ba(no3)2 the ratio of barium ions to nitrate ions is

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3 years ago

a water sample is found to have a cl- content of 100ppm as nacl what is the concentration of chloride in moles per liter

ladessa [460]

Answer:

The concentration of chloride ion is $2.82\times10^{-3}\;mol/L$

Explanation:

We know that 1 ppm is equal to 1 mg/L.

So, the $Cl^-$ content 100 ppm suggests the presence of 100 mg of $Cl^-$ in 1 L of solution.

The molar mass of $Cl^-$ is equal to the molar mass of Cl atom as the mass of the excess electron in $Cl^-$ is negligible as compared to the mass of Cl atom.

So, the molar mass of $Cl^-$ is 35.453 g/mol.

Number of moles = (Mass)/(Molar mass)

Hence, the number of moles (N) of $Cl^-$ present in 100 mg (0.100 g) of $Cl^-$ is calculated as shown below:

$N=\frac{0.100\;g}{35.453\;g/mol}=2.82\times 10^{-3}\;mol$

So, there is $2.82\times10^{-3}\;mol$ of $Cl^-$ present in 1 L of solution.

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3 years ago

Sodium is an inactive metal why

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Answer:

Inactive metals are inert metals that doesn’t react with most of the chemicals.They are highly resistant to oxidation and corrosion when exposed to moisture.

Explanation:

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2 years ago