If an atom has 17 protons, 14 neutrons, and 20 electrons, what is the atom's electrical charge?
A. -3
B. -4
C. +4
D. -7

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes

According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.

How much would you need to weigh out in order to have 0.2moles of magnesium atoms?