Which of these is a compound?

A. Carbon dioxide

B. air

C. carbon

D. oxygen

The pH of a 1.0M solution of butanoic acid HC4H7O2 is measured to be 2.41. Calculate the acid dissociation constant Ka of butanoic acid.

32 Which electron configuration represents the electrons in an atom of Ga in an excited state? (I) 2-8-17-3 (3) 2-8-18-3 (2) 2-8-17-4 (4) 2-8-18-4

1. What is light energy converted from in the bulb of a lamp? electric energy sound energy heat energy 2. Which is the best example of an object that converts electric energy to heat energy? lamp toaster radio 3.

Explain how to prepare 100ml of a 1.0 m ki solution

What mass of NaC6H5COO should be added to 1.5 L of 0.40 M C6H5COOH solution at 25 °C to produce a solution with a pH of 3.87 given that the Ka of C6H5COOH is 6.5*10-5 and the molar mass of NaC6H5COO is 144.1032 g/mol?

You determine the volume of your plastic bag (simulated human stomach) is 1.05 L. How many grams of NaHCO3 (s) are required to fill this container given a 70.

If 3.00 g of limestone reacted, what mass of calcium chloride would be produced?

Which four quantities a, b, c and d are required to balance the equation ... aMgO (s) + bHCl (aq) = = > cMgCl2 (aq) + dH2O (l)

Find the number of moles of water that can be formed if you have 134 mol of hydrogen gas and 62 mol of oxygen gas

The amount of kinetic energy an object has depends on its. motion position gravity height