What is the hydronium ion concentration of a solution with a pOH of 8.30? (5 points) Question 20 options:

1)

1.28 x 10−6 M

2)

1.99 x 10−6 M

3)

2.34 x 10−5 M

4)

2.86 x 10−5 M

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4

What does a numerical subscript following an element in a chemical formula mean?

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.