(07.05 MC) The table shows the concentration of a reactant in the reaction mixture over a period of time.
Reactant Concentration
Time
Concentration
1.8 M
Os
2105
1.2 M
450 S
0.8 M
580 S
0.6 M
720 S
0.4 M
What is the average rate of the reaction over the first 450 seconds? (3 points)
Select one:
a.1.7 x 10-3
b.1.9 x 103
c.2.0 x 109 x
d.2.2 x 10-3

1) in saturated limewater, [h+ ]=3.98x10-13 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 2) in butter, [h+ ]=6.0x10-7 m. a) find [oh]-/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 3) in peaches, [oh]=3.16x10-11 m a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? / 4) during the course of the day, human saliva varies between being acidic and basic. if [oh]=3.16x10-8 m, a) find [h+ ]/ b) what is the ph? / c) is the solution acidic, basic, or neutral? /

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: