What is the new volume of a gas at standard pressure (760 mm Hg) if originally 2.30 L of the gas had a pressure of 725.0 mmHg?

2.19L

Explanation:

Information from the question include:

V1 (initial volume) = 2.3L

P1 (initial pressure) = 725mmHg

P2 (final pressure) = 760mmHg

V2 (final volume) =?

With the Boyle's law equation P1V1 = P2V2, the final volume can easily be obtain as follow:

P1V1 = P2V2

725 x 2.3 = 760 x V2

Divide both side by 760

V2 = (725 x 2.3)/760

V2 = 2.19L

Therefore, the new volume of the gas at standard pressure is 2.19L

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

- 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