Assume that the test tube shown started out having 10.00
g of mercury(II) oxide. After
heating the test tube briefly, you
find 1.35 g mercury(II) oxide left
and 8.00 g of liquid mercury.
How much oxygen gas was
produced by the chemical
reaction? Show your work.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

Uranium can supply energy for the worlds electricity without admitting harmful greenhouse gases which of these statements best describes an outcome of uranium mining

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease