ATOMIC MATH
Solve the problem as we did in class, starting each step with the answer from the previous step.
NO DECIMALS; NO NEGATIVE NUMBERS
Add the atomic number of radium, Ra, to the number of electrons in argon 1 point
Ar.
Your answer
Subtract the atomic mass (rounded) of sodium, Na.*
1 point
Your answer
Multiply by the number of protons in beryllium, Be
1 point
Your answer
Divide by the number of electrons in helium, He.
1 point
Your answer
Subtract the number of neutrons in iron, Fe,
1 point
Your answer
Answers: 1
Chemistry, 22.06.2019 12:00
What is the subscript for oxygen in its molecular formula
Answers: 1
Chemistry, 22.06.2019 12:30
What is the percent composition of ca(oh)2? 37.7% ca, 53.0% o, and 10.3% h 45.5% ca, 38.2% o, and 16.3% h 54.0% ca, 43.0% o, and 2.7% h 64.7% ca, 27.0% o, and 8.3% h
Answers: 2
Chemistry, 23.06.2019 01:30
If a particle has z = 25 and 23 electrons, what is its charge?
Answers: 2
Chemistry, 23.06.2019 01:50
Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?
Answers: 1
ATOMIC MATH
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