N an exothermic reaction, what is true of the enthalpy?

A. It has increased.

B. It has decreased.

C. It has remained unchanged.

D. It has, at minimum, doubled.

For each of the following pairs of solutes and solvent, predict whether the solute would be soluble or insoluble.

HOW separate water mixture + mothballs?

If you start with 5 molecules of o2 in the reaction how much mg will you need? a. 4 c. 8 b. 5 d. 10

Use the periodic to fill in the numbers in the electron configurations shown below. B: 1s2 2sA2pB

four gases were combined in a glass cylinder with these partial pressures:3.5 atm N2,2.8 atm, 0.25 atm At and 0.15 atm He. What is the mole fraction in the mixture? What is the mole fraction of Ar in the mixture?

When you measure something in meters cubed, you are measuring

Low density: low pressure: high density Is which. evaporation? water vapor? condensation / liquid water

Which structures are found on sponges? pores medusae polyps stinging cells

Coefficients in a chemical equation are used to: balance the number of atoms on both sides of the equation ensure that all subscripts on both sides of the equation are the same indicate energy changes that occur during the reaction indicate the type

What determines your blood cholesterol level?