12 Which gas is monatomic at room temperature and

pressure?

(1) nitrogen

(2) neon

(3) fluorine

(4) chlorine

A gas occupies a volume of 0.560 L in a flexible container at a temperature of 393 K. To what temperature must the gas be lowered if we desire it to occupy a space of 0.400 L?

Show whether the following solutes are soluble in each solvent, and the process of dissolution of each, and their weak bonds. (NH4) 3 PO4 in water Ag Cl in water Methane (CH4) in water Methane in gasoline (C8H18) Methyl alcohol (CH3-OH) in water

Which of the following compounds is always part of an aqueous solution?

Which groups compose the main group elements?

Renewable energy is energy that - will not run out - will not increase in cost - will not cause pollution - can be recycled

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.

Is calcium carbonate a compound element or mixture?

Why do covalent bonds not involve the transfer of electrons