What does a reaction not depend on?

A.

molecular orientation

B.

numbers of collisions

C.

numbers of reactants

D.

activation energy

If the following elements were to form ions, they would attain the same number of electrons as which noble gas? elements: As, S, Na, Rb noble gas: He, Ne, Ar, Kr

The number of moles of solute present in 1 kg of a solvent is called its [A]. molality [B]. molarity [C]. normality [D]. formality

his is the chemical formula for epinephrine (the main ingredient in adrenaline) : C9H13O3N A biochemist has determined by measurements that there are 33. moles of carbon in a sample of epinephrine. How many moles of nitrogen are in the sample?

Calculate the kinetic energy of a 107, mg raindrop moving at a speed of 4.7 - Round your answer to 2 significant digits.

The chemical equation below shows the reaction between tin (Sn) and hydrogen fluoride (HF). Sn + 2HF SnF2 + H2 The molar mass of HF is 20.01 g/mol. How many moles of Sn are required to react with 40 g of HF? 1 2 3 4

A student has 2.99 g of Potassium Permaganate. How many mL of a. 532 M solution can the student make? How does one solve this?

Which statement is true according to the kinetic theory? 1. Moles of different gases with the same mas and temperature always have the same average density. 2.

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.

Consider the following quantities used in thermodynamics: E, H, q, w, S, G. How many of them are state functions? a. 2 b. 0 c. 3 d. 1 e. 4

What are some good problem statements