Which of the following human activities can cause eutrophication of lakes?

Question 10 options:

1)

adding fertilizer to soil

2)

mining

3)

deforestation

4)

burning of fossil fuels

Celine has a bottle that contains 20% of milk and the rest water. The bottle has 1 liter of water. Write an equation in one variable that can be used to find the total number of liters of milk and water in the bottle.

How can a redox reaction be used as a source of electrical energy?

This unit discusses in detail the role of catalysts to lower the activation energy of reactions. The term catalyst appears in nonscientific discussions to refer to something that provokes or speeds significant change or action.

The equation for the chemical reaction shown is not balanced. What number should replace the question mark to balance this equation? 2Ag2O →? Ag + O2 A. 2 B. 3 C. 1 D. 4

Barnard's Star is a red dwarf. It is located 5.9 light years from Earth. (One light year is the same as 9.46 trillion kilometers.)

How many moles of Mgs203 are in 245g of the compound

A student was trying to obtain lithium by electrolysis of aqueous lithium chloride. Was he successful?

A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance.

Is the bonds that cause gaseous Cl2 to become liquid when cooled intramolecular or intermolecular

Describe an example of deposition