You can measure how much of something you have by counting individual objects. for example, you can count the number of cookies in a bag or the number of pages in your notebook. there is a name for a number of atoms, ions, or molecules. one mole of a substance is equal to 6.02 x 10^23 atoms, ions, or molecules of that substance. you can determine the number of moles in a substance by obtaining the mass of the substance.
objectives
• to measure the masses of common compounds and objects
• to calculate the moles and atoms from the experimental masses
a. salt(nacl)
b. sugar(c6h22o11)
c. chalk(caco3)
d. sand(sio2)
e. water(h2o)
f. balance
g. spoon
Answers: 1
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For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate
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How have the greenhouse gasses increased from the year 2000 to 2018
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