You are doing an experiment in science class where you are mixing sodium bicarbonate (baking soda) and acetic acid (vinegar) to make carbon dioxide, water and sodium acetate. At the beginning of the experiment you weigh the sodium
bicarbonate and acetic acid and find that its mass is 90 grams. At the end of the experiment, what would you expect the
combined mass of the carbon dioxide, water, and sodium acetate to be?.
A You would not be able to find the mass of the proliuct because matter is destroyed in a chemical reaction
B exactly 90 grams
C less than 90 grams
D
more than 90 grams

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

Why does asexual reproduction result in offspring with identicle genetic variation