TIMED ASSIGNMENT If an object has a volume of 3 cm3 and
has a density of 9 g/cm, what is the
mass of the object?
R. 3 grams
S. 6 grams
T. 27 grams
V. 81 grams

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

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.

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %