What are four methods that can be used to separate mixtures?

If 5.0 of al react with 9.0 g of O2, how many grams of Al2O3 (101.56 g/mol) can be formed

A compound has an empirical formula of CHN. What is the molecular formula, if it's molar mass is 135.13 g/mol? (C=12.01 amu, H=1.008 amu, N = 14.01)

Many gyms and health clubs have steam saunas, which are small steam-filled rooms. Traditionally, steam saunas have a container of heated rocks. A small ladle of water is poured on the rocks in order to make the steam.

The element silver has an atomic weight of 108 and consists of two stable isotopes silver-107 and silver-109. The isotope silver-107 has a mass of 107 amu and a percent natural abundance of 51.8 %.

A 3.60-g sample of a salt dissolves in 7.70 g of water to give a saturated solution at 21°C. What is the solubility (in g salt/100 g of H2O) of the salt?

MnO2 + 4 HCl → Cl2 + MnCl2 + 2 H2O Given 145.7 grams of MnO2, how much hydrochloric acid (HCl) is needed to use up the MnO2 completely (MM in g/mol: MnO2=86.94, HCl = 36.46, Cl2=70.9, MnCl2=125.84, H2O=18.02) ? 244.4 g 10.55 g 145.5 g 1407 g

The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed/released when a. 8.00 g of steam condenses to liquid water at 100°C. b. 18.1 kJ of heat are absorbed. c. 91.6 kJ of heat are released. d. 91.

In radiation therapy, a. isotopes are traced through a chemical reaction. b. un6y human cells are destroyed. c. radioactive isotopes are used as fuel. d. weak spots in water pipes are found.

What is density of an apple

Describe the pat of a carbon atom through the process of cellular respiration