Which phrase defines an aquifer? a. the total amount of precipitation that falls on an area in a year b. the network of streams and rivers that flow into a large river c. a lake or a pond that is used to store water d. an underground geological formation that contains a large amount of water

Word equation for k(s) +h2o(l) yield koh (aq) + h2

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.

How many grams of mgbr2 are needed to produce 75g or metal?