What is the mass in grams of each of following?
a. 3.011 x 1023 atoms F
e. 25 atoms W
b. 1.50 1023 atoms Mg
f. 1 atom Au
c. 4.50 1012 atoms Cl
d. 8.42 x 1018 atoms Br

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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