What mass of Na is needed to react with H2O to liberate 566 L H2 gas at STP, accord-
ing to the equation below?
2 Na(s) + 2 H2O(l) → H2(g) +2 NaOH(aq)
Answer in units of g. Your answer must be
within 3.0%

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Chromosome 17 is made of over million base pairs.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.