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lianna [129]
3 years ago
15

To test the quality of water sources in her area, Shameka collects five samples from each water source and tests the quality of

each sample.
Which important step of scientific design
is Shameka conducting?​

Chemistry
1 answer:
RUDIKE [14]3 years ago
5 0
Experiment because she is actually taking the samples and testing them.
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Which of the following was a major contribution to chemistry by Antoine Lavoisier
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Antoine Lavoisier proved that oxygen is required for material to burn. Without oxygen, the fire goes out which is easily testable.
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A student developed a chromatogram and found that the cluent front traveled 94 mm and the Zn²+ cation traveled
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Explanation:

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What did thomson’s model of the atom called
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Plum pudding model

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Nickel and gold combine to make white gold. White gold is considered a(n) of nickel and gold.
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White gold is considered an alloy of nickel and gold.
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Concerning Boyle's Law, if you had a gas at a pressure of 101 kPa and decreased the volume of the container holding the gas to o
Viefleur [7K]

Answer:

P_2=404 kPa

Explanation:

Hello,

In this case, the Boyle's is mathematically defined via:

P_1V_1=P_2V_2

Which stands for an inversely proportional relationship between volume and pressure, it means the higher the volume the lower the pressure and vice versa. In such a way, since the volume is decreased to one quarter, we can write:

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We can compute the new pressure:

P_2=\frac{P_1V_1}{V_2} =\frac{P_1V_1}{\frac{1}{4} V_1} =\frac{101kPa*V_1}{\frac{1}{4} V_1} \\\\P_2=4*101kPa\\\\\\P_2=404 kPa

Which means the pressure is increased by a factor of four.

Regards.

7 0
3 years ago
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