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Reil [10]
3 years ago
5

1. The following reaction does not proceed to form a product: H2O + Au---> no reaction. Why is that?

Chemistry
2 answers:
Xelga [282]3 years ago
8 0
1. B
The positive charge in water is provided by hydrogen, and gold provides the same charge. However, gold is not more reactive than hydrogen so it can not replace it in the compound.

2. In order to balance the equation, you must sure there are equal moles of each element on the left and right side of the equation:
2C₂H₆ + 7O₂ → 4CO₂ + ₆H₂O

3. The number of moles of sodium atoms on the left of the equation must be equal to the number of moles of sodium atoms on the right, as per the law of conservation of mass. The answer is B.

4. C.
A synthesis reaction usually results from single displacement because some element or compound is produced in its pure form

5. B. 
The gas being produced is being synthesized.
zhenek [66]3 years ago
7 0

are all those previous anwsers correct?

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Use the question marck Moles of CO2
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SET UP THE CHART
Always start with the giving

0.624 mol O2    /  1mol of CO2
___________  / _____________ = Cancel the queal ( O2)
                       / 32.00c O2
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You should look at the giving number ( how many num u gor ever there) 
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