What are some of the careers involving Space and the study of the Universe?

When 15 grams of salt dissolve in 45 grams of water, what is the resulting mass of the mixture? The resulting mass would be 60 grams. The resulting mass would be 45 grams. The resulting mass would be 65 grams.

Methanol (CH3OH) burns in air according to the equation 2CH3OH + 3O2 → 2CO2 + 4H2O If 201 g of methanol are used up in a combustion process, what is the mass of H2O produced?

An electron falls from energy level X to energy level Y and releases blue light. A different electron falls from energy level Y to energy level Z and releases red light.

Justin added concentrated HCl solution in excess to 45.8 grams of magnesium metal and collected the hydrogen gas that was produced by the reaction. Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g) If Justin collected 2.

Identify the type of chemical reaction. H2CO3 H2O + CO2

what natural resources are used to make a computer? what natural resource am i using to operate a computer?

What are 5 examples of physical changes and chemical changes?

Which statement is true of the carbon atoms that make up a diamond

How many moles of O2 are required to react completely with 1.396 g of Fe?

Standard reduction potentials are based on which element? A. helium B. hydrogen C. lithium D. oxygen E. zinc