The universe is made up of (lol)

A. millions of stars

B. Hundreds of stars

C. thousands of stars

D. billions of stars

2 HCI → H2 + Cl2 Endothermic or exothermic

Select the four TRUE statements below describing the standard free energy change (ΔG) and the equilibrium constant (Keq). Options: 1. The standard free energy change is a function of enzyme concentration in the reaction. 2.

Consider this reaction: Zn (s) + 2HCl (aq) ZnCl2 (aq) + H2 (g). Which change could decrease the rate of production of ZnCl2?

What is the molecular weight of a gas if a 12.0 g sample has a pressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R = 0.0821 L atm / mol K)

Use the mass and volume data to calculate the density of liquid propane to the nearest hundredth. Mass of propane = 4,300 g Volume of propane = 10,000 mL The density of liquid propane is g/mL.

What is the definition of colorie

How does a solid differ from a liquid? b. how does a liquid differ from a gas? c. how is a liquid similar to a gas? d. what is a plasma?

Which pair of elements will form an ionic bond? N and O K and Br C and Cl Fe and Ni

What does mass is conserved in a chemical reaction mean

Which atom has a nucleus that contains 13 protons and 14 neutrons 1. Mg 2. Be 3. Al 4. N