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15
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How do you determine if a chemical equation is balanced or unbalanced?
The total amount of atoms of each element must be the same on the reactants and products side of the equation.
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15
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Balanced or Unbalanced? SnO2 + 2H2 â Sn + H2O2
Unbalanced
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heart
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shark
Other team loses 15 points!
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shark
Other team loses 15 points!
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baam
Lose 20 points!
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gift
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gift
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15
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Which number in a chemical formula tells you how many atoms of an element you have?
Subscript
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50 g of CO2 + 50g of H2O equals 20g of C6H12O6 + 40g of O2. Is this equation balanced or unbalanced?
Unbalanced
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Balanced or Unbalanced? Mg + HCl â MgCl2 + H2
Unbalanced
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Which of the following chemical formulas contains the most elements? a. CO b. NaCl c. NaHCO3 d. H2O
c. NaHCO3
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Balanced or Unbalanced? 6CO2 + 6H2O â C6H12O6 + 6O2
Balanced
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Which of the answers below would be a correct chemical symbol of an element? a. BE b. be c. bE d. Be
Be
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A(n) ____________________ is a shorthand representation of an element or compound using chemical symbols.
Chemical Formula
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How many atoms, elements, and molecules does the following formula have: 4C3H8 ?
Atoms: 44, Elements: 2, Molecules: 4
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The __________ are the elements or compounds on the right side of a chemical equation.
products
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How many molecules of carbon dioxide does this formula indicate you have: 6CO2?
6
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Physical or Chemical Change: A chain link fence rusting
Chemical
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