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2 years ago

What is the controlled variable of your experiment? Your answer

Chemistry

1 answer:

Wewaii [24]2 years ago

6 0

Answer:

The controlled variable of an experiment is the one thing that stays the same in an experiment.

Explanation:

An example would be : if I have two pennies, both dunked in water, but than I change one to be dunked in vinegar, the one dunked in water still is the constant or the controlled variable.

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To think the answer is grasses

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2 years ago

Which is the correct chemical formula for hydrogen gas?

kodGreya [7K]

The correct formula for hydrogen gas is H2

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3 years ago

Which scientist performed the cathode ray experiment leading to the discovery of electrons?

Mrrafil [7]

Answer:

E. Thomson

Explanation:

J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons.

https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-structure/a/discovery-of-the-electron-and-nucleus

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3 years ago

Read 2 more answers

If 0.05 mol of I2 were actually produced in a reaction starting with 15 grams of CO what is the percent yield of I2

Andrew [12]

Answer:

6.2

Explanation:

<h2>I AM SMOooOooOooORT</h2><h2 /><h2>no but really trust the process</h2><h2 />

4 0

2 years ago

7 Be + 2 HCl →BeCl2+ H2

Mashutka [201]

Answer:

The percent yield is 42.52%.

Explanation:

Theoretical yield of beryllium chloride = 12.7 g

Actual yield of the beryllium chloride = 5.4 g

The formula used for the percent yield will be :

$\text{Percent yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100$

Now put all the given values in this formula, we get:

$\%(yield)=\frac{5.4 g}{12.7 g}\times 100=42.52\%$

The percent yield is 42.52%.

3 0

2 years ago