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Nana76 [90]
3 years ago
8

Which statement is true about oxygen and rocks?

Chemistry
2 answers:
mafiozo [28]3 years ago
7 0
<span>oxygen is a mixture and a rock is a pure substance.</span>
denpristay [2]3 years ago
7 0
B. both are pure substances
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Veronika [31]

Answer:co2

Explanation:

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3 years ago
Which of the following pairs of elements belong to the same group
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C. C and Pb; Carbon and Lead being in the same group.
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2 years ago
Can someone please help????nThis is sooooo hard
Rashid [163]

Answer:

See explanation.

Explanation:

I highly suggest you watch OChem Tutor's videos on IUPAC nomenclature because the actual naming would take a lot of time to teach in text-based format. But here is how to name them:

1) I think there are two seperate pictures for number 1. The molecule on the left is 1-pentene and the one on the right is 4-methyl-1-pentene. If the whole thing is one molecule but there is just a bond missing where the red marker numbers are, that molecule would be 9-methyl-1,6-decadiene.

2) 4-methyl-2-pentene

3) 2,4-octadiene

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6) 3,6-dimethyl-2,4-heptadiene

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6 0
2 years ago
What is the mass of 4.2kg gold when it's transferred to a planet having twice the gravity of earth
rjkz [21]

Answer:

The only relationship is that the larger the mass of an object the more gravitational force it has. So... something that has more mass has more gravity. The mass of 4.2kg of gold when transferred to this new planet is still 4.2kg. However, the WEIGHT (not mass) is now doubled to 8.4kg. Mass is constant it is how much matter something is made up of. Weight depends on the gravitational force. Moreover, I would look at other answers too (I'm not entirely confident of saying that the weight is 8.4kg since I don't have any gravitational equations in front of me it just sounds logical).

Explanation:

5 0
3 years ago
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