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Alla [95]
3 years ago
10

How many phosphorus atoms are present ?

Chemistry
1 answer:
Law Incorporation [45]3 years ago
3 0

Answer:

The answer is option 2.

Explanation:

(PO4)2 = P2O8

Therefore, there are 2 Phosphorus atoms present .

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Purchasing the correctly sized BMX bike is based on the height of the rider. In order to fit a customer, the salesman can use th
Phantasy [73]
Answer: Your best answer is A.

Explanation: 1.35 is a constant and thus is does not change. The equation can be simplified to-
“b = (0.29 x h)+ 1.35”
So, if your rider is say 60 inches tall, the equation would change to-
“b = (0.29 x 60)+ 1.35”
Then to-
“b = (17.4) + 1.35” or “b = 17.4 + 1.35”
And therefore the size of the BMX bike frame in inches would be-
“b = 18.75”

Hope this helped :)
5 0
2 years ago
Define intensive properties​
natka813 [3]

Answer:

An intensive property is a property of matter that does not change as the amount of matter changes. It is a bulk property, which means it is a physical property that is not dependent on the size or mass of a sample.

In contrast, an extensive property is one that does depend on sample size. Examples of extensive properties include mass and volume.

5 0
3 years ago
What is the molar mass of CaCl2?
Aleks04 [339]

Answer: The molar mass of the given compound is 1.11\times 10^2 g/mol

Explanation:

In molecular formula of CaCl_2 there are two chlorine atoms and one calcium atom.

The atomic mass of the calcium = 40.07 g/mol

The atomic mass of chlorine = 35.5 g/mol

Molar mass of the guven compound is :

40.07 g/mol + 2\times 35.5 g/mol=111.07 g/mol\approx 1.11\times 10^2 g/mol

The molar mass of the given compound is 1.11\times 10^2 g/mol

8 0
2 years ago
an atom has 79 protons, 78 electrons and a mass number of 118. how many neutrons does this atom have​
igomit [66]

Answer:

39

Explanation:

Electrons weigh almost nothing, so their mass doesn't really matter for these types of problems. Just subtract 118-79 to find the remaining mass which is for the neutrons.

4 0
2 years ago
What's a certain indicator that a molecule is polar?
qaws [65]
I think the answer is D
6 0
3 years ago
Read 2 more answers
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