36g of an alloy of copper and zinc contains 45% copper. how much pure copper do you need to add in order to get a 60% copper alloy?

If 455-mL of 6.0 m HNO3 is used to make a 2.5 L dilution what is the molarity of the dilution?

What is pressure? O A. The force of gas molecules hitting their container O B. The space occupied by gas molecules moving around O C. The heat required to change the temperature of a gas O D. The mixing of gas molecules due to random motion

If you asked a believer of the heliocentric theory how long a year last, what would they say?

How many particles are in 400 grams of NaCl

Choose the product. - 7p3 (4p2 + 3p - 1) - 28p5 - 21p4 + 7p3 28p6 + 21p3 - 7p 21p3 + 8p2 + 3p4 - 8p - 21p5 + 8p4 - 3p3

If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move

Use the drop‑down menus to label the statements as either true of false. Dichloromethane is flammable. true false Methanol is flammable. Concentrated sulfuric acid is corrosive. 10% sodium carbonate solution must be used in the fume hood.

What is the process all rocks are continuously in during which that can change into other types of rocks

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?

1. Why does CH30 evaporate faster than water?