Which of these is a covalent compound?

A. MgO

B. LiCl

C. AlCl3

D. CO

Which of the statements is correct? A. Water leaves the descending limb of the loop of Henle through active transport. B. NaCl enters the ascending limb of the loop of Henle through diffusion. C.

If the natural abundance of ag-107 is 51.84 %, what is the natural abundance of ag-109?

Substance A and B are the same mass and at the same initial temperature. When the same amount of heat is added to each, the final temperature of A is 75 degrees Celsius and B is 35 degrees Celsius.

Can a physical change, change what a substance is?

A high carbon dioxide level is going outside the cell membrane with the low carbon dioxide levels. is this diffusion, active transport, our facilitated diffusion

What do nucleus act as

Change of state may occur when?

During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°c. the specific heat of water is 4.18 j/g·°c. how much heat did the reaction generate?

Catalysts are substances that increase the rate of reaction but can be recovered unchanged at the end of the reaction. Catalysts can be classified as either homogeneous (same state as reactants) or heterogeneous (different state than reactants).

How many molecules are there in 79g of Fe2O3?