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algol [13]
3 years ago
15

PLEASE HELP ASAP Do NOT give me a random gibberish answer or else I might report you!!

Chemistry
1 answer:
Veronika [31]3 years ago
8 0

Answer:

Physical Changes:

Let's say during your camping trip you stepped on a twig. This would be a physical change.

Let's also say that while there, you accidentally stepped on a flower, causing it to fall off of it's stem. This would also be a physical change.

Chemical Changes:

Let's say you start a fire using wood that you got from this rainforest. Since the act of burning something is a chemical change, this would apply.

Let's also say you forget a banana peel there. After a while, it would start to rot. And since rotting is a chemical change, this would apply as well.

Explanation:

Hope this helps!

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3 years ago
How many grams of Carbon are in sample of 400 grams of Co2?​
RoseWind [281]

Answer:

Mass of carbon = 109.1 g

Explanation:

Given data:

Mass of carbondioxide = 400 g

Mass of carbon = ?

Solution:

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3 0
4 years ago
The mixing of which pair of reactants will result in a precipitation reaction csi(aq) + naoh(aq) hcl+ca(oh)2
Fudgin [204]
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7 0
3 years ago
Why does tin oxide weigh more than tin?
Oxana [17]

Answer:

hi

Explanation:

The mass of the actual tin will remain constant; however I assume you are comparing the mass of the reactant, tin, with the mass of the products. The increase in mass stems from the oxides of tin present due to its reaction with oxygen in the air:

Sn(s) + O2(g) → SnO2(s)

By working out the atomic mass of the tin and the relative formula mass of tin oxide, you can see why there is a mass increase; 119:151. As you can see here, for every 119g of tin reacted, there will be 151g of tin oxide, hence why you think the mass of the tin increased (by 32g).

Hope this helped!

4 0
3 years ago
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