When electricity is produced from coal, the chemical energy in coal is first changed to thermal energy. True or False

(i need this answer like now cuz i have to have this test done by 5:00 and its 8:30 -.-)

Hakim used 18000J of energy to climb up to the top of a building in 10 mins. calculate the power he developed in climbing up to the top of the building?

What is the best type of graph to track the change in sales for your store from month to month? line graph bar graph pictograph pie chart

Sunlight produces a spectrum of colors that includes what?

Copper (i) oxide, cu2o, is reduced to metallic copper by heating in a stream of hydrogen gas. what mass of water is produced when 10.00 g copper is formed?

Function C gives the cost, in dollars, of buying n apples. 6. Which statement best represents the meaning of C (10) = 9? a. the cost of buying 9 apples b. the cost of 9 apples is $10 c. the cost of 10 apples d. ten apples cost $9

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? 4 KNO3 (s) → 2 K2O (s) + 2 N2 (g) + 5 O2 (g)

What was the ratio in the formula for iron (II) oxide

2C18H38 + 5502 → 36CO2 + 38H2O

What is the opposite of osmosis

Acid rain most often damages stone architecture by causing