Why does crab grass do so well when ordinary grass struggles in late summer? Is this a phenomenon? Or is this based on a scientific principle? If so, what is it that causes crab grass to thrive in relation to the different type of plants?

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

How have the greenhouse gasses increased from the year 2000 to 2018