Write the number of atoms of each element found in one unit of the compound:
a.) potassium iodide, ki
b.) sodium sulfide, na2s
c.) silicon dioxide, sio2
d.) carbonic acid, h2co3

Find the mass in grams of 1.37x1020 particles of h3po4

Asap! will give brainiest when a heat wave strikes a region causing more people to run air-conditioning units, electrical demand increases. what needs to be done to meet this increased demand? raising the control rodslowering the control rodsremoving the control rods

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.