A chemist requires 0.811 mol Na2CO3 for a reaction. How many grams does this correspond to?

Two of the reactions in the "Copper Cycle" are classified as oxidation-reduction ("'redox") reactions. Identify the two reactions, and identify the oxidizing agent and the reducing agent in each.

How is all energy connected? a. Energy is connected as it constantly moves from one place to another. b. Energy is connected through light waves c. Energy is not connected. d. Energy is connected through chemical bonds.

The gas in a cylinder has a volume of 5 liters at a pressure of 114 kPa. The pressure of the gas is increased to 215 kPa. Assuming the temperature remains constant, what would the new volume be? ___ L

What are two human activities that are harmful to birds?

What does it mean if an element has no subscript in a chemical formula?

Which of the following are considered strong bases? That is, they are capable of doing E2 reactions. (choose all that apply) Hydroxide, OH- Ammonia, NH3 Water, H20 ОMethanol, Снзон Methoxide, CH30- Cyanide, CN- Amide, NH2-

Describe an experiment to show that zinc is more reactive than copper

The lower the ignition temperature, better the fuel. True or false? Why?

MATH. Tom bought 15 party hats priced at 3 for $0.65 and 56 noisemakers priced at 7 for $1.25. What was the total cost of the hats and noisemakers, not including tax? A. $9.75 B. $8.75 C. $10.70 D. $13.25

What does it mean to be a biotic factor