When yeast is added to bread dough, it produces carbon dioxide. the pressure of the gas causes the dough to expand. explain how the rising of dough is an example of both a physical and a chemical change.

Does a solution have to involve a liquid? explain.

What is the volume in liters of 3.46kg of ethylene glycol?

How many moles of ZnCl, will be produced from 23.0 g of Zn, assuming CuCl, is available in excess?

A high school chemistry teacher needs to dilute her stock of 18.0 M H2SO4 solution for a lab. How many mL of water must she add to 10.0 mL of 18.0 M H2SO4 solution to prepare a 0.50 M H2SO4 solution?__mL

What is the charge of that particle? A). + e B).-2/3 e C).0 D).+2/3

What is the 3 types of matters

A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower? gravity phototropism presence of nutrients presence of water

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.