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3 years ago

A student was trying to produce hydrogen gas.

1 answer:

6 0

Answer: A student was trying to produce hydrogen gas. Figure 1 shows the apparatus she used. (a) No gas was produced. The student's teacher said that this was because the substances in the flask did not react.

Explanation:

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A student observes the chemical process described by this equation:

choli [55]

Answer:

Both are equal

Explanation:

Mass of starting material i.e Aluminium is $4.480 * 10^{-23}$ grams

The weight of oxygen is $2.65 * 10^{-23}$

There are 4 atoms of aluminium and 3 atoms of oxygen

Thus, the total mass of starting material is

$4 *$ mass of one atom of aluminium $+ 6 *$ mass of one atom of oxygen

$4 * 4.480 * 10^{-23} + 6* 2.65 * 10^{-23}$

$35.1 * 10^{-23}$ grams

Mass of new substance is also equal to

$4 *$ mass of one atom of aluminium $+ 6 *$ mass of one atom of oxygen

$4 * 4.480 * 10^{-23} + 6* 2.65 * 10^{-23}$

$35.1 * 10^{-23}$ grams

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3 years ago

How is a kilogram of cotton balls similar to a kilogram of bricks

Nutka1998 [239]

Answer:

because they are both a kilogram

Explanation:

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3 years ago

Help, please X﹏X - The picture in the right is after the water drained out -

lutik1710 [3]

There’s no picture in your question

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3 years ago

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What is the natural abundance of of sodium iodine 123 in my own words

KIM [24]

Answer:

Explanation:

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4 years ago

Which statement describes an intensive property of matter?

andrey2020 [161]

Among the choices above, I think the statement that best describes an intensive property of matter is letter B which is " It depends on how a substance was formed." Intensive properties are those property which does not depend upon the amount of substance present in the system. Such as refractive-index, density etc

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3 years ago

Read 2 more answers