What is the H₃O+ (aq) concentration of a strong acid with a pH of 0.24?

Using structural diagrams, write an equation to show the reaction of butanoic acid with water to produce hydronium ion and a conjugate base. label the reactants and products 

Explain how calcium carbonate functions as a buffer. Include a chemical reaction in your explanation

HOw much of a 0.075M/L HCl solution is needed to make 800ml at a PH of 5.0

a cell phone battery has 9.00x10^-3kwh of energy stored in it. If the battery runs at 3.20V and draws an average of 0.375A of current, how long will the battery last? 

Show your work, include formulas, substitution, and express your answer rounded correctly with appropriate units

A student's research indicates that the planet mercury's radius is 2.164*10^6 m and its mass is 3.1*10^19kg

calculate the gravitational field strength at Mercury's surface.

An engineering company is hired to improve the efficiency of a transmission line. In their report, they discuss ways that will allow them to reduce the current by a factor of four. Assuming this is done, by what factor will the power losses be reduced?

White blood cells fight disease-producing organisms by producing

During an immune response, some cells of the immune system release antibodies and, thereby, cause pathogens to be immobilized and form clumps. Which cells of the immune system have this function?