When 95.0 grams HBr and 18.0 g O2 react according to the following equation, what is theoretical yield of Br2 in

moles?

4HBr + O2 - > 2Br2 + 2H20

Pure water has a hydrogen ion concentration of 1 * 10-7 M and a pH of 7. A student measures a basic solution and finds that it has a hydrogen ion (H+) concentration of 1 * 10-3. Explain why the student must have made an error in her measurement.

HBr + Mg (OH) 2 MgBr2 + H2O

Justify Must new substances be formed when you observe a chemical property? Explain

A sample of hydrogen occupies a volume of 351 mL at a temperature of 20 degrees Celsius. What is the new volume if the temperature increases to 38 degrees Celsius? (Do not forget to convert to Kelvin!)

Which macromolecules are polymers made of nucleotides

You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 19 quibs of substance called skvarnick.

How do you know if an element is an ion?

Which gas is not a greenhouse gas, A methane, B Water Vapor, C, Carbon dioxide, D, Nitrogen, E, Ozone

A very small equilibrium constant means ... a. an equal amount of reactants and products c. more products b. more reactants d. system isn't at equilibrium

What is in a banana? give me specifics?!