A gas is enclosed in a cylinder fitted with a piston. The volume of the gas is 5.00 L at 0.500 atm pressure. The piston is moved to increase the volume to 3.00 L. Which of the
following is a reasonable value for the pressure of the gas at the greater volume?

0.8333 L. P1v1=p2v2

Explanation:

I dont now if this is wht you were looking for so srry

- 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