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kotegsom [21]
3 years ago
13

How could using either more or less of a chemical in a scientific experiment cause a change in results?

Chemistry
1 answer:
MakcuM [25]3 years ago
7 0
More chemicals can cause faster reactions/ results.
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The observation that 20g of hydrogen gas always combines with 160g of oxygen gas to form 180g of water, even when there is more
mash [69]

Answer:

The answer is most likely A. Definite proportions

Explanation:

The Law of Definite proportions states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.

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2 years ago
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bija089 [108]

Answer:

D

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Oxygen is the 8th element in the periodic table. This means that oxygen has 8 protons and 8 electrons. In order to get the number of neutrons you take the atomic weight in this case 15.9999~16 and you subtract it by the number of protons (16-8).

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by radiation from the Earth's surface

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