Tell me one way compound and elements are similar & one way compounds and elements are different

If 0.25 moles of potassium chloride are consumed completely how many moles of potassium fluoride will be produced

A simple heat engine might make use of the warm air around New York city. Enegy could be takenn as heat from the atompsphere (assume 30 celcius) and rejected as heat to the Hudson River (10 celcius).

As a comet approaches the Sun, it arcs around the Sun more rapidly. Why?

To determine the types of equipment your boat must carry, you need to make a measurement of the boat. What is this measurement?

What is an example of static friction

Which of these is the best reason for proper nutrition? A. To ensure that you will be skinny B. To protect yourself against certain diseases C. To improve your intelligence D. To ensure that you will get good grades

And object has a mass of 15g it has a volume of 7.5ml. find the density of the object.

I need this answered quickly. is the branch of science for naming and classifying organisms based on their natural relationships? A-physics B-taxonomy C-genetics D-biology

For a fixed amount of gas, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas?

A 500-kilogram sports car accelerates uni- formly from rest, reaching a speed of 30 me- ters per second in 6 seconds. What distance has the car traveled during the 6 seconds?