Form of energy also known as light energy

How many moles of molecular oxygen will be needed for the complete combustion of 100.0 g of sulfur dioxide? The product of this reaction is sulfur trioxide

Question 1 Dalton's Law Formula: Protal = P7 + P2 + P3 ... A closed beaker contains a mixutre of gases. Their partial pressures are: Gas A = 2 atm Gas B = 1 atm Gas B = 4 atm What is the total pressure of the gas mixture?

Atoms of elements that are in the same group have the same number of a. protons. c. valence electrons. b. neutrons. d. protons and neutrons.

Calculate the number of moles of solute present in each of the following solutions. Part A 255mL of 1.70M HNO3 (aq) Part B 45.0mg of an aqueous solution that is 1.35m NaCl.

Which of the following aqueous solutions are good buffer systems?. 0.37 M hydrocyanic acid + 0.24 M sodium cyanide 0.14 M sodium nitrite + 0.27 M nitrous acid 0.21 M hypochlorous acid + 0.13 M potassium hypochlorite 0.20 M nitric acid + 0.

When 10.7 g of Al are reacted with 42.5 g of HCl, what volume of H2 will be produced at 47 C and 725 mmHg? Formula: 2Al+6HCl=2AlCl3+3H2

Increasing the temperature increases the rate of a many reactions by:

2A balloon filled with helium occupies 20.0 L at 1.50 atm and 25°C. How many moles of helium will there be in the balloon at STP? A. 22.4 moles B. 1.12 moles C. 0.0446 moles D. 0.893 moles E. 1.23 moles F. 4.55 moles

1. Which has a larger radius Ca atom or Ca+2 ion? 2. Which has a greater radius F atom or F - ion? 3. Which is the correct way of understanding the trend for Ionic radius Vs. Atomic radius?

For which of the following activities might you want to hire a chemist? A. examining the structure of plant cells B. building a fence C. building a wood storage shed D.