Classify this statement as always true, AT; sometimes true, ST; or never true, NT. To obtain a value for the number of moles using the ideal gas law, one uses the conditions of STP.

River processes have a great impact on the land surface. Which of the following is ordered from smallest to largest? A. river systems, tributaries, rivers B. rivers, tributaries, river systems C. tributaries, river systems, rivers D.

How many ions that have a + 1 charge will bond with an ion that has a - 2 charge?

An increase in the temperature of a liquid causes a (n) ? A - increase in the kinetic energy of the particles B - endothermic reaction to occur C - decrease in the velocity of the particles D - exothermic phase change to occur

A 1.2 kg block of iron at 32 ∘C is rapidly heated by a torch such that 12 kJ is transferred to it. What temperature would the block of iron reach (assuming the complete transfer of heat and no loss to the surroundings) ?

How many grams of sodium oxide can be produced when 55.3 g Na react with 64.3 g O2? Unbalanced equation: Na + O2 → Na2O Show, or explain, all of your work along with the final answer.

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.

7. A perfect cube has a width of 2 cm. What is the cube's volume? Show your work!

Predict at least two circumstances (outside influences) that would cause a system in equilibrium to change the concentrations of its reactants or products.,

How many atoms are there in 2.3 grams of H?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to