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3 years ago

9

one advantage of recording data accurately is that you can _____. control the results repeat the experiment eliminate mistakes a

void having to analyze your data

1 answer:

Papessa [141]3 years ago

3 0

repeat the experiment would be the easiest way to make sure u got the correct and accurate answer

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What is a dependent variable

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The dependent variable is the variable that changes based on the independent variable (the manipulated variable).

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3 years ago

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What volume of oxygen gas is needed to completely combust 0.202L of butane (C4H10) gas?

saveliy_v [14]

Answer:

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Explanation:

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3 years ago

What is the total pressure of a gas mixture containing partial pressures of

Advocard [28]

Answer:

1.54 atm

Explanation:

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Total Pressure = Sum of all partial pressures

So,P= P1 + P2 + P3

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3 years ago

An unknown diprotic acid (H2A) requires 44.391 mL of 0.111 M NaOH to completely neutralize a 0.58 g sample. Calculate the approx

Anna [14]

Answer:

$M=235.42g/mol$

Explanation:

Hello!

In this case, given this is an acid-base neutralization and we are considering a diprotic acid, we can write the following mole-mole relationship:

$2n_{acid}=n_{base}$

It means that the moles of acid can be computed given the volume and concentration of NaOH:

$n_{acid}=\frac{M_{base}V_{base}}{2} =\frac{0.044391L*0.111mol/L}{2} \\\\n_{acid}=2.46x10^{-4}mol$

It means that the approximate molar mass of the acid is:

$M=\frac{m_{acid}}{n_{acid}} \\\\M=\frac{m_{acid}}{n_{acid}} =\frac{0.58g}{2.46x10^{-3}mol}\\\\M=235.42g/mol$

Best regards!

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3 years ago

What percentage of the total incoming radiation to the Earth reaches the ground? 20 30 40 70

weeeeeb [17]

Answer: 22.5 percent of incoming solar radiation goes directly to the surface of the Earth and is absorbed.

Explanation: Transfer of radiation through a planet's atmosphere. A planet and its atmosphere, in our solar system, can radiate back to space only as much energy as it absorbs from incoming solar radiation.

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