1.You bought a loaf of bread and on the way home, the loaf of bread was crushed. Is the density of the crushed bread the same density as the uncrushed bread? If the density of the crushed bread is different from the density of the uncrushed bread, tell which bread has the higher density. Explain how you know.

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.

Determine the ph of 0.10 m nh3 solution. nh3 is a weak base with a kb equal to 1.8 x 10-5 round answer to nearest whole number.

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold