The symbol indicating the atomic number of a nucleus is __________

Fill in the blank(s) with correct word


Z

Physics & Space Science

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A student is told to use 20.0 grams of sodium chloride to make an aqueous solution that has a concentration of 10.0 grams of sodium chloride per liter of solution

Assuming that 20.0 grams of sodium chloride has a volume of 7.5 milliliters, about how much water will she use in making this solution? A) 9.25 L B) 9.5 L C) 9.9925 L D) 10 L

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"GFI" stands for:

a. grand flux indicator. b. ground forcing indicator. c. ground fault interrupter. d. gauss-free invention.

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A rock weighs 30 N on Earth and another rock weighs 30 N on the Moon. Which rock has the greater mass?

A) the one on Earth B) the one on the Moon C) They have the same mass. D) not enough information

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The half-life of 131I is 8 days. On a certain day, the activity of an 131I sample is 6.4 mCi. What is its activity 40 days later?

Physics & Space Science