you have equal numbers of molecules of sodium chloride (NaCi), calcium choloride (CaCI2), potassium bicarbonated (KHCO3), and sucrose (C12H22)11). Which substance has an atom ratio of 1 to 2?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?

How does climate change cause the ocean's thermohaline current to slow down?