In a lab, 20.0 g of ammonia (NH3) are reacted with 20.0 g of hydrogen chloride (HCl) to produce solid ammonium chloride.
NH3(g) + HCl(g) + NH4Cl(s)
What mass of ammonium chloride is produced?

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Which change to the system wood cause the freely-moving piston to lower?

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !