What is the oxidation state of chromium in cr2o7-2

Can water vapor be treated as an ideal gas? discussbriefly.[5]

Which sample of water has the lowest vapor pressure? 1. 100 mL at 50°C 2. 200 mL at 30°C 3. 300 mL at 40°C 4. 400 mL at 20°C

Today chlorine is prepared from sodium chloride by electrochemical decomposition. Formerly chlorine was produced by heating hydrochloric acid with pyrolusite (manganese (IV) oxide, MnO2), a common manganese ore.

The material that goes through the filter paper is called the?

A 276.0 g piece of granite, heated to 596.0°C in a campfire, is dropped into 1.45 L water (d = 1.00 g/mL) at 25.0°C. The molar heat capacity of water is cp, water = 75.3 J / (mol ·°C), and the specific heat of granite is cs, granite = 0.

What is the H3O + ion concentration of a solution that has an OH - ion concentration of 1.0 * 10^-3M? A) 1.0 * 10^-3M B) 1.0 * 10^-7M C) 1.0 * 10^-11M D) 1.0 * 10^-14M

Given the following chemical reaction: 2 O2 + CH4 CO2 + 2 H2O In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? 6 C 12.01 Carbon 1 H 1.01 Hydrogen 8 O 16.00 Oxygen A. 4 B. 6 C. 8 D. 12

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.