What is the total charge of the thorium nucleus? (the neutral thorium atom has 90 electrons.) ?

Coal can be classified as which type of rock?

Which situations make use of interactive multimedia and which do not? Amelia is exploring a shopping website looking for clothes or accessories she could give to her sister.

What leads to the formation of an ionic bond with Hg22+? the attraction of a noble gas the attraction of an NH4 + ion the attraction of a group 1 element the attraction of an SO42 - ion

Why doesn't water light on fire? It has all the ingredients except heat! Hydrogen for the flammability factor, oxygen so it can keep burning, and all you need to do is add heat and BOOM you have a flame! 15 pts

How do you convert between the mass and the number of moles of a substance?

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller

How do you tell if a compound is polar or non polar

What two ions are central to the arrhenius definitions of acids and bases?