3. Which is the minimum amount of energy required to start a chemical reaction?

A endothermic energy

B chemical energy

C activation energy

OD exothermic energy

How is knowing the chemical properties of a substance useful to scientist?

Which of the following bonds connect amino acids in the primary structure of a protein?: A) Hydrogen Bonds B) Phosphodiester Bonds C) Peptide Bonds D) Alpha 1,4-glycosidic Bonds E) Ionic Bonds

What is the oxidation number of Chlorine? Cl6

State of an atom with same number of proton and electrons

Determine the number of moles of H in each sample. 1). 8.48 mole NH3 2).0.111 mole N2H4 3). 36.0 mole C10 H22

Describe a proton, neutron, and electron. Where are these particles located inside an atom.

A sample of gas is at 273°K and 2.00 atm with a volume of 6.00 liters. When the gas is compressed to 3.00 liters and the pressure increases to 3.00 atm, what is the new temperature of the sample?

Which oxygen pachages materials and distributed them throughout the cell

How many atoms in 3 mol zn

Isotopes: are atoms of different elements which have the same mass are atoms of the same element with equal numbers of neutrons are atoms of the same element with different numbers of neutrons are atoms of the same element with equal numbers of