Which formula represents a polar molecule? (ch4) (hcl) (nh3)

Write the balanced equation for the burning of nonane, c9h20, in air.

A) It takes 47.0J to raise the temperature of an 10.7g piece of unknown metal from 13.0∘C to 25.0∘C. What is the specific heat for the metal? b) The molar heat capacity of silver is 25.35 J/mol⋅∘C.

What substance can undergoes all the three states of matter

Why would 18 be wrong for the atomic mass of an atom with 6 neutrons, 6 electrons, 6 protons?

Aqueous hydrochloric acid reacts with solid sodium hydroxide to produce aqueous sodium chloride and liquid water what is the terorectical yield of water formed from the reaction of 3.3 g of hydrocloric acid and 6.6g of sodium hydroxide?

Calculate the molar solubility of ca (io3) 2 in each solution below. the ksp of calcium iodate is7.1 * 10-7.

At normal temperature and pressure, air has a density of 0.001184 g/mL. What is the mass of air in a room that is 3.07 m by 3.00 m by 3.77 m? Answer in units of kg.

A gas made up of atoms escapes through a pinhole 0.155 times as fast as h2 gas. write the chemical formula of the gas.

Calculate the mass percent composition of lithium in Li3PO4. A) 26.75 % B) 17.98 % C) 30.72 % D) 55.27 % E) 20.82 %

What is the golden rule of lighting safety?