How and why has the air quality changed in the United States over the last 30 years?

A tank of oxygen has a volume of 1650L. The temperature of the gas inside is 35degrees Celsius. If there are 9750moles of oxygen in the tank what is the pressure in PSI?

What is the oxidation state of an individual bromine atom in nabro3?

What occurs when kcl (s is added to water?

15 g of gold and 25 g of silver are mixed to form a single-phase ideal solid solution. How many moles of solution are there? What are the mole fractions of gold and silver? What is the molar entropy of mixing? What is the total entropy of mixing?

What are chemical bonds

The transfer of from one molecule to another is an oxidation-reduction reaction, or redox reaction.

Banded iron formations were caused by the production of which atmospheric gas? A) Carbon Dioxide B) Water Vapor C) Oxygen D) Nitrogen

3. Which net ionic equation describes this reaction? 3Ca (OH) 2 (aq) + 2FeCl3 (aq) → 3CaCl2 (aq) + 2Fe (OH) 3 (s) 3Ca2 + (aq) + 3OH - (aq) + Fe3 + (aq) → Fe (OH) 3 (s) + CaCl2 (aq) Fe3 + (aq) + 3OH - (aq) + 3Ca2 + (aq) → Fe (OH) 3 (s) + 3Ca2 + (aq)

How many moles of methane are produced when 25.1 moles of carbon dioxide gas react with excess hydrogen gas?

Which reaction releases the greatest amount of energy per kilogram of reactants? A) neutron + uranium-235 ➡️ barium-141 + krypton-92 + 3 neutrons B) 2C + H2 ➡️ C2H2 C) C3H8 (g) + 5O2 (g) ➡️ 3CO2 (g) + 4H2O (l) D) NaOH (aq) + HCl (aq) ➡️ NaCl (aq) +