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True [87]
2 years ago
11

How many moles of hydrogen gas would be required to produce 25 moles of H2O?

Chemistry
1 answer:
OverLord2011 [107]2 years ago
5 0

Answer:

There would be 25 moles

Explanation:

This is the equation for water (synthesis):

2H₂   +   O₂   →    2H₂O

Since there are 25 moles of water, the moles of hydrogen gas will have 25 moles.

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Is hydrogen gas a mixture or pure substance?
Akimi4 [234]

Answer:

pure hydrogen is a pure substance even though it consists of many different types of molecules. what makes it pure substance is that it is free from contamination.

8 0
3 years ago
Which of the following statements is FALSE:O Density is a measure of how closely packed the atoms of a substance are.O The Densi
monitta

Answer

The Density of a substance can change if its location changes.

Explanation

All the statements are TRUE except

The Density of a substance can change if its location changes.

This is because density is an intensive property, that is regardless of the object's shape, size, or quantity, the density of that substance will always be the same. Even if you cut the object into a million pieces, they would still each have the same density.

Therefore, the statement that is FALSE is

The Density of a substance can change if its location changes.

3 0
1 year ago
12. What is the empirical formula for C10H30O5?
kramer

Answer:

Just use a text book.. So that you get the concept

5 0
3 years ago
Compared to the nonmetals in Period 2, the metals in Period 2 generally have larger
konstantin123 [22]
The answer is atomic radii; the size or radii of an atom increases from left to right, versus the ionization energies and electronegativities of atoms which increase from right to left.
6 0
3 years ago
which of the following describes a similarity between a liquid and gas A. both are forms of heat are used to warm objects. C. bo
Leona [35]

Answer:

It's A

Explanation:

Liquid can heat things and so can steam.

8 0
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