3 years ago

What type of element is calcium

Chemistry

1 answer:

marshall27 [118]3 years ago

3 0

Calcium is a really soft type of metal.
~Deceptiøn

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There is about 1.0 g of calcium as Ca2+ in 1.0 L of milk. What is the molarity of Ca2+ in milk?

meriva

Explanation:

It is known that molarity is the number of moles present in a liter of solution.

Molarity = $\frac{\text{no. of moles}}{volume}$

Also, number of moles equal mass divided by molar mass. And, molar mass of calcium is 40.07 g/mol.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{1.0 g}{40.07 g/mol}$

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Therefore, calculate the molarity as follows.

Molarity = $\frac{\text{no. of moles}}{volume}$

= $\frac{0.025 mol}{1.0 L}$

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2 years ago

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</span>d. a proton attracting an electron

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2 years ago

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: If a 250. mL sample of the above buffer solution initially has 0.0800 mol H2C6H5O7 - and 0.0600 mol HC6H5O7 2- , what would be

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Answer: New concentration of $HC_{6}H_{5}O^{2-}_{7}$ is 0.23 M.

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Moles of $HC_{6}H_{5}O^{2-}_{7}$ = 0.06 mol

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2 years ago

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Answer:

Explanation:

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