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Zanzabum
3 years ago
15

what were the first living organisms on Earth and how did they change Earth's development and composition?

Chemistry
1 answer:
bekas [8.4K]3 years ago
4 0
I would believe the first species of fish and plants.
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Does anybody know this also explain
Tresset [83]

Answer:

brainliest answer

I believe this is correct

Explanation:

CaBr2+Na2Co3》CaCo3+2NaBr

The double-replacement reaction generally takes the form of AB + CD → AD + CB where A and C are positively-charged cations, while B and D are negatively-charged anions.

8 0
3 years ago
4FeS2 + 11O2 > 2Fe2O3 + 8SO2
BartSMP [9]

Answer:

80.13g of SO2

Explanation:

4FeS2 + 11O2 —> 2Fe2O3 + 8SO2

Molar Mass of FeS2 = 55.8 + (2x32) = 119.8g/mol

Mass of FeS2 from the balanced equation = 4 x 119.8 = 479.2

Molar Mass of SO2 = 32 + (16x2) = 32 + 32 = 64g/mol

Mass of SO2 from the balanced equation = 8 x 64 = 512g

From the equation,

479.2g of FeS2 produced 512g of SO2.

Therefore, 75g of FeS2 will produce = (75 x 512)/479.2 = 80.13g of SO2

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KATRIN_1 [288]

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0.8M

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