Chemistry, 24.05.2021 17:20 adrian1742

How many moles of KOH are present in 750. mL of a 0.250 M solution?

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 16:00, 20heldmadison

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

Answers: 1

continue

Chemistry, 22.06.2019 07:40, caleb19moody

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Answers: 2

continue

Chemistry, 22.06.2019 08:30, breannaking9734

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Answers: 2

continue

Chemistry, 22.06.2019 11:40, Wemaybewrong

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)