A buffer solution is made using a weak acid, ha. if the ph of the buffer is 4 and the ratio of a - to ha is 0.001, what is the pka of ha?

Spaghetti takes about 9 minutes to cook at sea level, but about 14 minutes in the mountains. why do you think this happens?

Sun. What planet is famous for the beautiful rings that surround it?

Amalia uses two different dietary analysis software programs to determine the vitamin E content of a 1-oz serving of cooked asparagus. She notices the amounts given by the programs are not the same.

How many molecules of sodium oxide will be created if 275 grams of sodium reacts with excess oxygen? Given the equation: 4Na + O2 - > 2Na2O

Sodium and water react according to the equation 2Na (s) + 2 H2O (liquid) - > 2 NaOH (aq) + H2 (g). If 10.0 g id sodium is placed in 50.0 g of water, calculate the mass of hydrogen that will be produced.

What does the Ka represent in the equation and why is it important?

Is an american alligator a autotroph?

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.

How are the number of protons and the number of neutrons related?