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dolphi86 [110]
2 years ago
14

About how long does it take for the moon to cycle through all its different observable shapes? (2 points)

Chemistry
1 answer:
malfutka [58]2 years ago
4 0

Answer:

A month

Explanation:

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PLZ HELP ME WITH MY WORK​
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Answer:

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Calculate the number of moles in 9.22 X 10^23 atom iron
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1.53 moles of Fe is your solution hope it helps!
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 – liquids, solids or gases – are made up of atoms and molecules that are in constant motion.<span> The theory also states that collisions between atoms and molecules are elastic</span>
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3 years ago
A compound is found to have 55.7% hafnium+and+44.3%+chlorine.+what+is+the+empirical+formula?
uranmaximum [27]

The empirical formula of a compound found to have 55.7% hafnium and 44.3% chlorine is HfCl4.

<h3>How to calculate empirical formula?</h3>

The empirical formula of a compound is a notation indicating the ratios of the various elements present in a compound, without regard to the actual numbers.

The empirical formula of the given compound can be calculated as follows:

  • Hafnium = 55.7% = 55.7g
  • Chlorine = 44.3% = 44.3g

First, we convert mass values to moles by dividing by the molar mass of each element

  • Hafnium = 55.7g ÷ 178.49g/mol = 0.312mol
  • Chlorine = 44.3g ÷ 35.5g/mol = 1.25mol

Next, we divide each mole value by the smallest

  • Hafnium = 0.312 ÷ 0.312 = 1
  • Chlorine = 1.25 ÷ 0.312 = 4

Therefore, the empirical formula of a compound found to have 55.7% hafnium and 44.3% chlorine is HfCl4.

Learn more about empirical formula at: brainly.com/question/14044066

#SPJ1

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1 year ago
How are theres over 2,500 different minerals why?
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A mineral occurs naturally, meaning that even though there are artificial substances that might be described as mineral-like they are not minerals
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