Express the results of this calculation to the correct number of significant figures: 1.02 - 0.0421 0.98 0.978 0.9779 1 plzzz

If the particles in a sample of matter have an orderly arrangement and move only in place, the sample is a

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.

Salt in oceans comes from and of rocks