Express the following in scientific notation:

1. 6,000,000,000,000,000,000,000

2. 547,000

3. 3,507,000,000

4. 0.0004650

Which states the purpose of an experiment? A.) to prove scientific law B.) to test a hypothesis C.) to communicate data D.) to randomly observe nature

Which common house hold items will turn litmus paper blue

What is the main disadvantage of parallel circuits? Any break in the circuit stops the flow of charges. There are multiple paths for charges to flow. If one bulb goes out, the other bulbs will go out. They are complicated to design and build.

Andrew pokes a marble, and the marble rolls down a ramp. The marble moves with speed. Which forces are acting on the marble in this situation? When Andrew pokes the marble, he gives it The movement of the marble is slowed down by force.

If the moon did not have an atmosphere what would happen to it

Is it possible to have a weak acid or base?

Why does an object accelerate when falling to earth's surface?

2.5 g of helium at an initial temperature of 300 K interacts thermally with 9.0 g of oxygen at an initial temperature of 620 K.

34. A steam engine operates between 300K and 600K, the maximum possible efficiency of this engine is a. 100% b. 75% c. 50% d. 25%

How many moles of phosphorus trichloride are in 200 grams of the molecule? 62.67 mol 27,466.6 mol 1.46 mol 0.69 mol