The greenhouse effect
a. is caused by pollution released into the atmosphere
b. does not occur naturally
c. is a naturally occurring process
d. needs to be reversed to save the planet

Matches the chemical name of each oxide of phosphorus to its chemical formula

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li