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15 Cards in this Set
- Front
- Back
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An atom is electrically neutral because... |
it contains equal number of protons and electrons |
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How many protons, neutrons, and electrons are in 33P3- ? |
15 protons, 18 neutrons, 18 electrons |
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The formula mass for sodium Sulfate is: |
142u |
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What is the ratio of a/b for the equation below where a, b, c, and d represent the coefficients in the balanced equation? aN2+bN2O4 ---> cN2+dH2O |
2/1 |
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What is the ratio of a/b for the equation below where a, b, c, and d represent the coefficients in the balanced equation?
aHCl+bMg(OH)2 --> cH2O+dMgCl2 |
2/1 |
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How many moles of N2O are present in 20.0g of N2O? |
0.454mol |
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What is the formula of barium phosphate? |
Ba3(PO4)2 |
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Combustion in excess oxygen of a sample of a compound containing only C and H, produces 88 mg of CO2 and 27 mg H2O. What is the empirical formula of the compound? |
C2H3 |
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What is the molecular formula of a compound that is composed of 0.186g C, 0.0390g H, and 0.108g N that has a molar mass of 129 g/mol? |
C6H15N3 |
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What mass of NH3 is prepared from the reaction of 5.0g of N2 with excess H2? Remember to write the equation first! |
6.0g |
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Which compound listed below is not soluble in water? NaNO3, NH4Cl Gas, KCl, AgCl, none of these |
AgCl |
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In a reaction of 4.3g of H2 and 6.11g of O2, 2.0g of water was isolated. What is the percentage yield of the water? |
29% |
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What is the molarity of a solution prepared by diluting 25.0mL of 0.220M NaCl to a final volume of 200.0mL? |
0.0275 M NaCl |
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What mass of KOH is needed to prepare 0.50L of a 0.050 molar solution? |
1.4g |
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What mass of AgCl is produced by mixing 300 mL of a 2.40M CaCl2 solution with excess AgNO3? |
206g |
