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notsponge [240]
3 years ago
13

How many significant figures are present in 2.020 x 10-25

Chemistry
1 answer:
garik1379 [7]3 years ago
3 0

Answer:4 and 3

Explanation:just took the test

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Answer:

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Question 1 (4 points)
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B= CH2O

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explain why samples of gold and copper can have the same extensive properties, but not the same intensive properties
vivado [14]
Extensive properties, as volume and mass, depend on the amount of material. So, you can have a sample of gold and a sample of copper with the same volume as long as you have different amount of each one.

On the other hand, intensive properties do not depend on the amound of material but on the chemical constitution of the material. Density is an intensive property, so gold and copper have different densities. That is why you can use intensive properties to characterize different materials.
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3 years ago
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3 years ago
Read 2 more answers
Which orbital is partially filled in the Zirconium (ZI) atom?
Nikolay [14]

Answer:

4d orbital.

Explanation:

Hello!

In this case, since zirconium's atomic number is 40, we fill in the electron configuration up to 40 as shown below:

1s^2,2s^2,2p^6, 3s^2,3p^6,4s^2,3d^{10},4p^6,5s^2,4d^2

Thus, the orbital 4d is partially filled.

Best regards!

3 0
3 years ago
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