How many grams of potassium sulfate would be recovered by evaporating 623 mL of 22.5 % potassium sulfate solution to dryness (d = 1.23 g/mL)? How many grams of hydrobromic acid are in 100.0 mL of 11.0 M hydrobromic acid solution?

A 525.0 mL sample of 5.50 M sulfuric acid has a density of 1.49 g/mL. Express the concentration of the solution in mass percent.

Consider the following equation:
sulfuric acid + sodium hydroxide → water + sodium sulfate
A 15.0 mL sample of sulfuric acid required 25.5 mL of 0.546 M sodium hydroxide for neutralization. Calculate the molarity of the acid. (Hint: start by writing and balancing the equation)

Look at the bean data from days 4–6. use these data to explain how natural selection changed the number of dark red walking beans over time. writing part

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .