What is a substance that by its presence increases the speed of a chemical reaction between other substances and yet is itself unchanged by the reaction?

a. accelerator

b. catalyst

c. inducement

d. reactor

How many moles are in 12.0 grams of O2

What vesicular transport process do you think is involved in the toxin entering the neuron?

A 20 g piece of metal with specific heat 0.4 J/g.°C absorbs 3.9 kilojoules of heat, calculate the change in temperature. Formula: Q = mcAT

What is the mass of an original 5.60-gram sample of iron-53 that remains unchanged after 25.53 minutes?

True or false It is very efficient to drive a large truck to and from school.

How are natural polymers and synthetic polymers similar? A) Both are made up of phosphates and organic bases B) Both serve important roles in producing amino acids C) Both are made up of monomers that are linked by covalent bonds

How can the solubility of a solution be increased? By increasing the temperature. By decreasing the temperature. By increasing the amount of solvent added. By decreasing the amount of solvent added.

Read the scenario. Ammonia is obtained from a reaction between nitrogen and hydrogen gases. The mole ratio between hydrogen gas and nitrogen gas is 3 to 1, and the mole ratio between ammonia and hydrogen gases is 2 to 3.

Transmutation is the process of transforming one element into another through nuclear reactions. What will be the nuclide produced when Cf-249 is bombarded with C-12? Four neutrons are also produced by the reaction.

State the formula for density in words and mathematical symbols.