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Zolol [24]
3 years ago
10

Which of the following is not the same as 0.00684 kg? 0.0684 dkg,6.84 g, 684 cg, 6,840 mg,

Chemistry
2 answers:
lesya [120]3 years ago
8 0
The Answer would be C.) 684 cg


emmainna [20.7K]3 years ago
6 0

Answer : 0.00684 kg is not equal to 0.0684 dkg.

Explanation :

The conversion used for mass from kilogram to dekagram is :

1 kg = 100 dkg

The conversion used for mass from kilogram to grams is :

1 kg = 1000 g

The conversion used for mass from kilogram to centigrams is :

1 kg = 100000 cg

The conversion used for mass from kilogram to milligrams is :

1 kg = 1000000 mg

Now we have to determine the same mass as 0.00684 kg.

(1) 1 kg = 100 dkg

0.00684 kg = \frac{0.00684kg}{1kg}\times 100dkg=0.684dkg

(2) 1 kg = 1000 g

0.00684 kg = \frac{0.00684kg}{1kg}\times 1000g=6.84g

(3) 1 kg = 100000 cg

0.00684 kg = \frac{0.00684kg}{1kg}\times 100000cg=684cg

(4) 1 kg = 1000000 mg

0.00684 kg = \frac{0.00684kg}{1kg}\times 1000000mg=6840mg

Hence, from this we conclude that, 0.00684 kg is not equal to 0.0684 dkg.

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<u>Answer:</u> 2.00 atm

<u>Explanation:</u>

The gas is kept under the same temperature in this problem. Assuming the amount of gas is constant, we can apply the Boyle's law.

The Boyle's law equation,

P₁V₁ =  P₂V  ₂

Plug in the values,

1.00 atm x 4.0 L =  P₂  x 2.0 L

Simplify,

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Now flip the equation,

2  P₂ L = 4.00 atm L

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Carbon can react with oxygen to form carbon dioxide. Which of the following statements about this chemical change is true?
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Carbon can react with oxygen to form carbon dioxide. Which of the following statements about this chemical change is true? ... Carbon and oxygen atoms are destroyed as new atoms are formed. Carbon and oxygen atoms have the same properties as molecules of carbon dioxide.

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Sort these species into isoelectronic groups. It doesn\'t matter which group goes in which box, so long as the correct species a
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Answer : The isoelectronic groups are:

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Explanation :

Isoelectronic : It is defined as the compound or molecule having the same number of electrons and the same number of electronic structure.

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