Students of diffrent ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle

How much heat is needed to change 5g of ice at 0°C to water at 50°C?

How many atoms are in 4NH3

sodium azide is an ingredient often added to the medium to select for certain types of bacteria. this compound inhibits components of the respiratory electron transport chain.

How would increasing the population of a coyote (predator) affect the population of both rabbits (prey) and grasses (producers) ?

What do scientists use to design their experiments? A. A scientific theory B. Peer review C. The scientific method D. Moral opinions

What is the oxidizing agent in the reaction fe + agno3 fe (no3) 3 + ag?

If the pituitary gland is inhibited, then what stops

Which mass measurement contains four significant figures? 1. 0.086 g 2. 0.431 g 3. 1003 g 4. 3870 g

A main function of a plant's seed is to

What are two metals found in the outer core