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cestrela7 [59]
2 years ago
9

What is the atomic number and mass number of calcium ?

Chemistry
1 answer:
solniwko [45]2 years ago
7 0

Answer:

Calcium has an Atomic number of 20 and Atomic mass of 40.078 u

Hope this helps!

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Leni [432]
Cold blooded animal? it’s a bit vague sorry
5 0
2 years ago
If a straight-chain hydrocarbon is a gas at room temperature, how many carbon atoms will it have?
Orlov [11]

The fewer the carbon atoms, the closer it is  to being a gas. The only one you have to check out is A which is hexane. You know that gasoline at the pumps has 8 carbons and its a liquid. So B and C are both not gases  because they are above 8.

C6 (hexane) is a liquid at room temperature not a gas.

The answer is D. If there is a gas present, it must be C3

6 0
3 years ago
Who discovered significance of 6.022 x 10 to the 23 power
Masja [62]
6.02 x 10^23 is Alvogrado's number (Amedio Alvogrado is the name). This formula is determined to find the amount of particles within a substance by a mole.
I hope this helps!
6 0
3 years ago
15 POINTS!!!
lawyer [7]

<em>Answer:</em>

  • At 60 centigrade, the kinetic energy of the substance will be greatest.

<em>Explanation:</em>

As we know, the kinetic energy of substance is directly proportional to Temperature.

The total Kinetic energy can be calculated as follow

                                                K.E = 3/2 n.R.T

From the equations, it is cleared that Temperature is directly proportional to temperature.

7 0
3 years ago
Read 2 more answers
If you have 6 moles of reactant A and excess of B and C, how much product E would be formed
pychu [463]
B and C are in excess so amount of E will be determined by A. 

Amount of product is determined by limiting reagents - Always.

Hence 6 moles of E will be formed.

Hope this helps!
3 0
3 years ago
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