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Alexxandr [17]
2 years ago
14

Please help with this question

Chemistry
1 answer:
Stella [2.4K]2 years ago
7 0

Answer:

You would use the meter stick on the right

Explanation:

The meter stick on the right has the little lines to see the decimal for a more accurate measure while the other you would have to guess.

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One mole of a metallic oxide reacts with one mole of hydrogen to produce two moles of the pure metal
MAXImum [283]

Answer:

The metallic oxide is Li₂O

Explanation:

Let the metallic oxide be M₂O

Thus;

M₂O + H₂ = 2M + H₂O

Molar mass of M₂O = (2x + 16)

We assume Molar mass of M to be x.

We are told that 5.00 g of the metallic oxide produces 2.32 g of the metal.

By proportion, we can write the following;

5g of M₂O × (1 mole of M₂O/(2x + 16)) × (2 moles of M/1 mole of M₂O) = 2.32 g of M × 1 mole of M/x g of M

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10/(2x + 16) = 2.32/x

Cross multiply to get;

10x = 2.32(2x + 16)

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5.36x = 37.12

x = 37.12/5.36

x = 6.925 g/mol

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2 years ago
List four examples of diffusion seen in daily life.
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Answer:

Spraying perfume in one corner of the room and the smell travels to the other side of the room

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6. dissolving ice tea mix in water
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Answer:

Dissolving ice tea mix in water is a chemical change

Explanation:

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