If a chemist wants to make 575 milliliters of 0.75 m hcl solution from a stock solution of 2.0 m hcl, how many milliliters of the stock solution would the chemist need to use

The answer is 216 mL

Answer : The volume of stock solution will be, 215 ml

Solution :

According to the neutralization law,

where,

= molarity of HCl solution = 0.75 M

= volume of HCl solution = 575 ml

= molarity of stock solution = 2.0 M

= volume of stock solution = ?

Now put all the given values in the above law, we get the volume of stock solution.

Therefore, the volume of stock solution will be, 215 ml

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms