According to the spectrum seen below, which set of photons were absorbed by the element

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Particles vibrate in a rigid structure and do not move relative to their neighbors.

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.