What stars tend to have the greates range of temperatures and the highest lumosities

A nurse measures the volume of a drop of medicine. The volume of 1 drop of medicine is 1.39 mL. What is the volume in deciliter of 100 drops of medicine?

How many mole of ZnCl2 will be produced from 55.0 g of Zn, assuming HCL is available in excess

A change in the properties of matter that does not change the identity of the substance is a chemical change a physical change an ionic change a covalent change

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?

Be sure to answer all parts. For the equilibrium 2 H2S (g) ⇌ 2 H2 (g) + S2 (g) Kc = 9.0 * 10-8 at 700°C the initial concentrations of the three gases are 0.740 M H2S, 0.740 M H2, and 0.370 M S2. Determine the equilibrium concentrations of the gases.

Planet z-34 has a mass equal to 1/3 that of earth, a radius equal to 1/3 that of earth, and an axial spin rate 1/2 that of earth.

Which statements accurately describe mass? Check all that apply.

What was the first particle discovered inside an atom

Calcium and sulfur ionic compound or non ionic?

Which of the following would release the most heat upon cooling from 75°C to 50°C?