What is the oxidation number of P in PF6^-

Why are watershed protection programs needed in Virginia? Check all that apply. Ecosystems need to be controlled. Floods can carry pollution and destroy habitats. Dams can be damaged and may require repair.

How can humidity be used to predict if it is going to rain? A low humidity means that it is going to rain. A high humidity means that it will not rain. A high humidity increases the chance it will rain. Humidity cannot be used to predict rain.

Is steel a mixture or pure substance

If you are trying to find the number of moles of gas present and you record a pressure of 123.3 kPa which value of R would you use?

When c=o change to c-o in a molecule what happen the bond length and strength?

How does an object become negatively charged? It gains electrons. It loses electrons. It gains protons. It loses protons.

TRY H Vele Elements y Llectron Configurations for P-Block Use the periodic table to determine the electron configuration for aluminum (AI) and arsenic (As) in noble-gas notation A [Ar]352301 [He1232206352301 [Ne]3:23p1 [Ne]352302

If you measure the mass of a model car to be 230 grams. the actual mass is 218 grams. what is your percent error.

If I have 1.9 moles of gas held at a pressure of 5 atm and in a container with a volume of 50 liters, what is the temperature of the gas?

A student measured 1.0 kcal when the student combined 99.7 mL of 3 M HCl with 100 mL of 3 M NaOH. Given that the reaction is HCl (aq) + NaOH (aq) → NaCl (aq) + H2O what was ΔHneutralization per mole of water?