Which molecules have one lone pair of electrons on the central atom? CH4, HCI, H2O, or NH3?

How many moles of water (H2O) are present in a beaker containing 45.9 g H2O? Give your answer to the correct number of significant figures. (Molar mass of water = 18.02 g/mol) 45.9 g H2O = mol H2O

A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure of the air in the balloon?

Landslides and slumps are forms of?

How can we make use of acids or bases to remove metals from soils?

True or false energy has no mass and takes up no space

Does The human brain retains more information than all the books in the Library of Congress

Will an object with a density of 0.97 g/ml float or sink in water

Which subatomic particle contributes least to the mass of the atom? which subatomic particle contributes least to the mass of the atom? neutron electron proton all of these contribute equally?

2H2S (g) 2H2 (g) + S2 (g) Kc = 1.67 * 10 ^-7 at 800 C A 0.500 L reaction vessel initially contains 0.0125 mol of H2S at 800 C. Find the equilibrium concentrations of H2 and S2.

An atom has an atomic number of 9 a mass number of 19 and an electron configuration of 2-6-1 explain why the number of electrons in the second and third shells shows that this is in an excited state