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professor190 [17]
3 years ago
12

Help Pls thnk you !!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
uysha [10]3 years ago
3 0
The answer is double displacement is the answer
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How many nonreactive elements are there in the periodic table??
pochemuha

Answer:

6

Explanation:

All noble gases are nonreactive, these include helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).

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3 years ago
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Identify each description as either a physical or chemical change.
Anettt [7]

Answer:

1 - physical

2 -chemical

3 - chemical

4 - physical

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6 - chemical

7 - physical

8 - chemical

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2 years ago
Which of these measurements is expressed as three significant figures?
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Which of these measurements is expressed as three significant figures?  


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3 years ago
Foods cook faster when placed in a pressure cooker. This is because the pressure on the surface of the water is (higher than/low
tia_tia [17]

Answer:

The pressure is higher than the atmospheric one, therefore the temperature is less.

Explanation:

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5 0
2 years ago
This compound, an eight-carbon alkane, serves as the 100 octane standard for gasoline. It has five methyl groups, one quaternary
Reika [66]

Answer:

2,2,4-Trimethyl-pentane

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Compound must have straight chain of 5 carbons.

Three methyl substituents are attached to 2 and 4 carbons.

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