The oxidation numbers of nitrogen in NH3, HNO3, and NO2 are, respectively: - 3, - 5, + 4 + 3, + 5, + 4 - 3, + 5, - 4 - 3, + 5, + 4

Explain, using the particle theory, how the rate of a chemical reaction depends on concentration and temperature (6marks)

Given the reaction: 2 NaOH + H2SO4 Na2SO4 + 2 H2O How many milliliters of 1 M NaOH are needed to exactly neutralize 100 milliliters of 1 M H2SO4? a 50 ml b 100 ml c 200 ml d 400 ml

When representative elements form ionic compounds which elements achieve full octets? metals and nonmetals nonmetals only neither metals only

What is the empirical formula for a substance that contains 24.59% phosphorus and 75.41% fluorine by mass?

Which of the following is 2.45986 rounded to 3 significant digits?

Which of the following statement is not true? A) The sun is involved in producing tides B) There can be two high tides in one location during a single day C) Only the oceans have tides D) If there is a high tide, there will be a low tide

A solution which has a concentration that exceeds its predicted solubility at a certain temperature and pressure would be -

Convert 4.992*1010 g to each of the following units. B. Mg c. mg D. metric tons

The ideal gas law shows us how a gas will behave under many conditions. The formula is: P V = n R T Where P = pressure, V = volume, n = amount of the substance, R = ideal gas constant, and T = temperature.

The Suns ultraviolent Rays can cause skin damage including sunburn and even skin