How are isotopes defined?
a. forms of different elements that have the same number of neutrons in each atom
b. forms of different elements that have the same number of protons in each atom
c. forms of the same element that differ in the number of neutrons in each atom
d. forms of the same element that differ in the number of protons in each atom

Which feature do highland climates have that lower elevation areas do not?

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.