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Anyone have answers to the Mass and Atoms Quick Check?

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8 answers
  1. 1. Which statement describes the quantities that can be found using the number of moles?
    -It can be used to find the number of molecules, atoms, or ions.

    2. A scientist uses 3 g of water (H2O) in an experiment. Which option describes the first step in calculating the number of molecules in 3 g of water?
    -Identify the molar masses of H and O.

    3. The molar mass of ammonia (NH3) is 17.03 g/mol. Which expression correctly shows how to determine the number of moles of ammonia equivalent to 5 g?
    -5 g× 1mol/17.03

    4. How many molecules of carbon dioxide (CO2) are there in 0.450 mol of carbon dioxide?
    -2.71×10^23

    5. When magnesium chloride (MgCl2) is dissolved in water, which statement must be true?
    -The sum of the mass of the Mg2+ ions and the mass of the Cl- ions must be equal to the mass of MgCl2.

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  2. heyo ❄️ is correct Thanks a bunch!

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  3. Heyo is clutch

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  4. Excuse you

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  5. what does that mean?

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  6. He’s calling you a mean name….I think. Oh nvm

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  7. no it means he helped him while he was in a tight spot. its a good thing Marissa 😭😭😭

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  8. Can someone find the answers to Ecology Chemistry Unit Test
    on pearson Please!? Please and thanks you soo much!!

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