How many ammonium Ions NH4^+1 are there in 1.73 mol(NH4)2S? i'm a chemistry test so i need help soon( and btw the 4 and 1 in NH4^+1 are both small numbers and also the 4 and 2 in (NH4)2S) are also small numbers, sorry i forgot what they are called.)

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

What are the names of these two interactions with cattle and how do they differ from each other