Determine the atomic mass of a hypothetical element that occurs on Earth as a mixture of 30.00 44X ...

Determine the atomic mass of a hypothetical element that occurs on Earth as a mixture of 30.00 44X (atomic mass of isotope = 44.00 u) and 70.00 46X (atomic mass of isotope = 46.00 u).

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[Ques. 2] Which of the following is formed by direct freezing of water droplets?
 a. Dew
  b. Snow
  c. Sleet
  d. Frost

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[Ques. 3] Determine the atomic mass of a hypothetical element that occurs on Earth as a mixture of 20.00 32X (atomic mass of isotope = 32.00 u) and 80.00 34X (atomic mass of isotope = 34.00 u).

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[Ques. 4] When the dew point is below 0C, which of the following is likely to form?
 a. Sleet
  b. Snow
  c. Hail
  d. Dew

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[Ques. 5] The percentage of a radionuclide that would remain after 4 half-lives is ______________.
 Fill in the blank(s) with correct word

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[Ques. 6] A form of precipitation that results from convection cycles in clouds is
 a. sleet.
  b. rain.
  c. hail.
  d. fog.

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[Ques. 7] A positron is the ______________of an electron.
 Fill in the blank(s) with correct word

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[Ques. 8] For water droplets to form, what must be present?
 a. Smog
  b. Hygroscopic nuclei
  c. Carbon dioxide
  d. Ozone

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[Ques. 9] The number of nucleons in a nucleus is the same as the number of neutrons plus the number of ______________.
 Fill in the blank(s) with correct word

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[Ques. 10] During the approach of a severe thunderstorm, workers on a project see lightning and then hear the resulting thunder 55 s later. Approximately how far away, in miles, is the storm?
 a. 11 mi
  b. 22 mi
  c. 12 mi
  d. 13 mi