The length of days and nights is caused by the earth's

tilt
shape
size
distance from sun

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.

Find the mass, in grams, of 5.00*10^23 molecules of f2

What four properties do all waves have in common