A flexible container has a volume of 22.5 liters when there is 1.00 moles of gas in it at STP. Determine the number of miles of gas that must be contained if the volume is increased to 30.0 liters.

1.33moles

Explanation:

N1 = 1.0 moles

V1 = 22.5L

V2 = 30L

N2 = ?

From mole - volume relationship,

N1 / V1 = N2 / V2

N2 = (N1 × V2) / V1

N2 = (1.0 × 30) / 22.5

N2 = 1.33moles

Number of moles of the gas is 1.33 moles

- 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