A substance has a volume of 10.0 cm3 and a mass of 89 grams. What is its density?

A super conductor performs best at

If 0.240 mol of methane (ch4) reacts completely with oxygen, what is the final yield of water in grams?

During electrolysis, electrons flow from an anode to a cathode. a cathode to an anode. an electrolyte solution to a nonelectrolyte solution. a nonelectrolyte solution to an electrolyte solution.

Which would be the best way to represent the concentration of a 1.75 M K2CrO4 solution?

In one experiment, magnesium metal melts. In a second experiment, magnesium metal ignites as it combines with oxygen. Classify the change in each experiment as chemical or physical. Explain your reasoning.

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.