Which two particles make up most of the mass of a hydrogen-2 atom?

(1) electron and neutron

(2) electron and proton

(3) proton and neutron

(4) proton and positron

How many H atoms in the formula: 3 H2SO4 2 3 6 4

A carbohydrate with 5 carbons is called a: A. hexose B. pentose C. tetrose D. triose

How many electron dot structure does phosphorus have?

When an automobile engine starts, the metal parts immediately begin to absorb heat released during the combustion of gasoline. How much heat will be absorbed by a 165 kg iron engine block as the temperature rises from 15.7°C to 95.

Which gas occupies the highest volume at STP?0.02 mol of O20.1 mol of Cl21 mol of N22 mol of H2

How are the terms group and period used on the periodic table

Enter a balanced chemical equation for the reaction between aluminum metal and liquid bromine.

What does DNA instructions for making what

Which of the following substances act as a catalyst in the body? A) carbohydrates B) nuclear Acids C) Lipids D) enzymes

How many carbons are in a molecule of hexane?