Which of the following electron configurations is correct?

a. Sc, 1s22s22p63s23p64d14s2

b. Cl, 1s22s22p63s23p5

c. Ca, 1s22s22p63s23p63d2

If you are studying cells and heredity, you are most likely taking a chemistry class. a. True b. False

If you need to do a 1:20 dilution on a culture to get acceptable plate counts, how many milliliters of original sample will you add to a final volume of 0.1 mL? For this course, a 1:20 dilution is 1 part culture to a final volume of 20 parts.

Magnesium is a light metal with a density of 1.74 g/cm3. What volume is occupied by 1.35 kg of magnesium?

You buy a balloon at the grocery store and walk outside into - 10F temperatures. what happens to the balloon? the balloons temp increses the vol increases the vol decreases the vol stays the same

Suppose we have a solution of lead nitrate, pb (no3) 2 (aq). a solution of nacl (aq) is added slowly until no further precipitation occurs. the precipitate is collected by filtration, dried, and weighed. a total of 17.

Why does one Oxygen atom bond with two Hydrogen atoms to form water? Why don't they bond in a different ratio?

A fossilized bone contains about 65% of its original carbon-14. to the nearest hundred years, how old is the bone

Calculate the mass of 1.25 moles of Al2 (SO4) 3

which of Nature's erosions message do you think wears down a mountain or part 2 faster when water or ice why

We dissolve 5.00 grams of sugar, C12H22O11, in water to make 1.000 L of solution. What is the concentration of this solution expressed as a molarity?