What is the [OH) if the poH is 4.9? a) 4.9 x 10-10 M
Ob) 1.0 x 10-4 M
C) 1.25 x 10-5 M
O d) 7.94 x 10-10 M

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Is laundry detergent an acid or a base?