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Ira Lisetskai [31]
3 years ago
14

HELP MA ASAP PLZZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
OverLord2011 [107]3 years ago
6 0

Answer:

C

Explanation:

son4ous [18]3 years ago
4 0

The best option would be C because it looks like a bass and the rest are prehistoric fossils D is a nautilus and A is a dinosaur skull  

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What is frost action
attashe74 [19]
The weathering process caused by cycles of freezing and thawing of water in surface pores, cracks, and other openings



7 0
3 years ago
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A water treatment plant applies chlorine for disinfection so that 10 mg/L chlorine is achieved immediately after mixing. The vol
Vlada [557]

<u>Answer:</u> The mass of chlorine needed by the plant per day is 9.4625\times 10^8mg

<u>Explanation:</u>

We are given:

Volume o water treated per day = 25,000,000 gallons

Converting this volume from gallons to liters, we use the conversion factor:

1 gallon = 3.785 L

So, \frac{3.785L}{1\text{ gallon}}\times 25,000,000\text{ gallons}=9.4625\times 10^7L

Amount of chlorine applied for disinfection = 10 mg/L

Applying unitary method:

For 1 L of water, the amount of chlorine applied is 10 mg

So, for 9.4625\times 10^7L of water, the amount of chlorine applied will be \frac{10mg}{1L\times 9.4625\times 10^7L}=9.4625\times 10^8mg

Hence, the mass of chlorine needed by the plant per day is 9.4625\times 10^8mg

6 0
3 years ago
What are the three broad classes of elements
mario62 [17]
The three broad classes of elements are:

Metals
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Nonmetals

4 0
4 years ago
What is the # of Electrons in carbon?
Feliz [49]

Answer:

Carbon dioxide (CO2)

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Explanation:

5 0
3 years ago
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You have cyclohexene, water, cyclohexanol, and a little sulfuric acid catalyst in a test tube at 60 oC and everything is at equi
Anvisha [2.4K]

Answer:

See explanation

Explanation:

We can convert cyclohexanol to cyclohexene in the presence of a strong acid such as sulfuric acid catalyst in a test tube at 60 oC by heating up the mixture to about 80 oC. This is a dehydration reaction so water is removed  to yield the alkene. A drying agent is used to remove any trace amount of water left in the system. This overall reaction is endothermic.

Also, the reverse is the case when we want to carry out the hydration of cyclohexene to yield cyclohexanol. The overall reaction is exothermic and involves the addition of more water to the alkene and then cooling down the system to about 40 oC.

8 0
3 years ago
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