Gold-185 decays by alpha decay. Part of the nuclear equation is shown below Fill in the blank with a number.
185/79 Au —> 4/2 He+__/11 Lr

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

An experimental procedure requires a 10 ml of acid to be dissolved

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves