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yulyashka [42]
3 years ago
11

The wax appears to disappear as a candle burns. How can the law of conservation of mass apply to this reaction?

Chemistry
1 answer:
White raven [17]3 years ago
8 0
Because mass is neither created nor destroyed, so the wax can not just disappear.
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Answer: A) Inconclusive; you would not know which of the two variables caused the change.

Explanation:

When you set up an experiment, you must make sure that you control the variables such that only one independent variable changes at a time, while all the remainder conditions (the other independent variables) are controlled (fixed).

By observing (measuring) the dependent variable, while only one independent variable changes you can understandhow such independent variable explains (determines) the dependent variable, leading to a conclusion.

Conversely, if two or more independent variables change at a time, then there is no way that you can tell how the output (dependent variable) is related with one or other of the changes of the indipendent variables. You wolud not be able to discriminate (distinguish) the effect of one or other variable, making the experiment inconclusive

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You have studied the gas-phase oxidation of HBr by O2: 4 HBr(g) + O2(g) → 2 H2O(g) + 2 Br2(g) You find the reaction to be first
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A compound with the empirical formula CH 2 O has a formula mass of 180 g/mol. What is its molecular formula
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Empirical formula mass

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Molecular fornula mass:-180g/mol

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Molecular formula:-

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1. They lack a nucleus

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3 years ago
What is the significance of wanting to know what the pH of a solution is?
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  • When pH < 7 the solution is acid.
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4 0
3 years ago
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