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Romashka-Z-Leto [24]
3 years ago
8

Explain why you can't just make gold out of a random yellow substance like straw or urine.

Chemistry
1 answer:
Yuri [45]3 years ago
6 0

Answer:

because you cant

Explanation:

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Explain the difference between biotic and abiotic
Paladinen [302]
Biotic are living organisms and abiotic are non living things such as rocks water soil
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3 years ago
How many mL of alcohol are in 240 mL of 95.0% alcohol solution?
tino4ka555 [31]
To work it out, you divide 240 by 100 to work out 1% of it, then multiply that by 95 to work out 95% of it. So
(240/100) * 95 = 228mL
5 0
3 years ago
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20 POINTS Use the problem below to answer the question: 34 grams of carbon react with an unlimited amount of H2O. The reaction i
Simora [160]

The carbon would be your answer hope this helps

4 0
3 years ago
A property is a characteristic of a substance that can be observed and does not change the identity of the substance. T/F
Murljashka [212]
The correct answer is false. The statement given does not describe a property in general. However, it speaks of a specific type of property which is the physical property.  This property is the one that does not change the identity of a substance. A property can also be a chemical property where the identity of a substance is changed.
4 0
3 years ago
Naphthalene, commonly found in moth balls, is composed of 93.7% carbon and 6.3% hydrogen. The molar mass of naphthalene is 128 g
Vikki [24]

Answer:

Molecular formula naphthalene → C₁₀H₈

Empirical formula naphthalene → C₅H₄

Explanation:

Centesimal composition means that in 100 g of compound we have x g of the element. Therefore in 100 g of naphthalene we have:

93.7 g of C

6.3 g of H

Let's make a rule of three:

In 100 g of naphthalene we have 93.7 g of C  and 6.3 g of H

In 128 g of naphthalene we would have:

128 . 93.7 / 100 = 120 g of C

128.  6.3 / 100 = 8 g of H

We convert the mass to moles, by molar mass:

120 g . 1mol / 12 g = 10 moles C

8 g . 1mol/ 1g = 8 moles H

Molecular formula naphthalene → C₁₀H₈

Empirical formula naphthalene → C₅H₄

(The sub-index of each element is divided by the largest possible number)

6 0
3 years ago
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