If 89.6 joules of heat 20.0 grams of iron from 30.0 C to 40.0 C, what is the specific heat of the iron in J/g. C?

You want to make 100 mL of a 2.5 M stock solution of calcium chloride (molecular weight 110.98 g/mol). How many grams of calcium chloride do you need to weigh out in order to make this solution? Round your answer to the nearest tenth of a gram.

Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2?2KMnO4 + 2CO2 a. O b. Mn c. KD. C

Sam used 38 quarts of paint for the outside of the barn and he used 26 quarts for the inside of the barn. How many gallons of paint did sam use to paint the entire barn?

Predict the product for PtCl4 + F2

for the mini turbines to work properly, which of the following criteria are important in choosing the material for their construction

An experiment is performed on a puck on a level air hockey table, where friction is negligible. a constant horizontal force is applied to the puck, and the puck's acceleration is measured.

To calculate the h2co3 content of the blood, the nurse needs to measure the pco2 (partial pressure of co2) by its solubility coefficient. what is the solubility coefficient of co2?

There are four naturally occurring isotopes of the element chromium. The relative abundance of each is 50Cr - 4.345% 49.946044 amu 52Cr - 83.789% 51.940508 amu 53Cr - 9.501% 52.940649 amu 54Cr - 2.365% 53.

Which statement describes how amino acids combine to form the backbone structure of proteins? A. They form peptide bonds between the amino group of one amino acid and the carboxyl group of another amino acid. B.

I have lungs but no legs. My offspring are found in membranous-shelled eggs and use lungs to breathe.