What are the conditions for Standard Temperature and Pressure (STP)?

Magnesium metal reacts with nitrogen gas to produce magnesium nitride, as shown in the following unbalanced equation below. (a) what type of reaction is this (combustion, combination, decomposition, etc)? (b) balanced the equation (c) how many moles of Mg3N2 can be formed from 24.3 g of magnesium? (d) how many grams of Mg3N2 can be formed from 24.3 g of magnesium? Show work for full credit. Mg(s) + N2(g) → Mg3N2(s)    

Which of the following substances would conduct electricity in solution? [Hint: which of them is ionic]

Name (a) an element that is a halogen, (b) in what period is the halogen located? (c) in what group is the halogen? (d) what is the symbol of this element? (e) what is the atomic number of this element? (f) what is the atomic mass of this element?

Use the ideal gas law to calculate the volume occupied by 0.200 mol of nitrogen gas at 1.00 atm pressure and at 27 °C. R = 0.0821 L. atm/(K. mol).

One mole of sodium atom contains

Avogadro stated that equal volumes of gases under the same conditions of temperature and pressure have equal

Water has a heat of fusion of 334 J/g and a heat of vaporization of 2,256 J/g.  How much heat must be removed to (a) condense 13.5 grams of water vapor (steam), (b) condense and cool 13.5 grams of water vapor (steam) to body temperature (37 oC) (show details of your work).

A nuclear __________ is a reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei after bombardment of the nucleus with a neutron leading to a chain reaction.

A gas at a temperature of 298 K has a pressure of 0.987 atm.  What will the pressure be at a temperature of 325 K, assuming no change in volume? (Show details of work for full credit, including writing the formula needed, defining your parameters, and solving for the unknown)