A subtance speeds up a chemical reaction without being changed itself as known as

Count then plot the total number of atoms in the reactants to total atoms in the products for the equation 2H2 + O2 + 2H2O

a sample of aluminum metal absorbs 9.86 j of heat, upon which the temperature of the sample increases from 23.2 to 30.5. Since the specific heat capacity of aluminum is 0.90. What is the mass of the sample

What is the molarity of a solution containing 9.0 moles of solute in 2500 mL of solution?

The prefix 'kilo-' means a thousand. So a kilo-gram is a thousand grams. 1 kilogram=1,000 grams How many kilograms is 1,008 grams? Round your answer to the nearest tenth of a kilogram.

Which of the following is an example of pseudoscience? a) psychic experiences b) benefits of aspirin c) bacteria as a cause of disease d) existence of viruses

What is the Celsius equivalent of 212°f

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?