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Dafna11 [192]
2 years ago
8

Which of the element pairs are in the same period?

Chemistry
1 answer:
Valentin [98]2 years ago
4 0

Answer:

Caesium and Barium

Explanation:

Once again, if you look at the periodic table, you can see that Caesium and Barium are in the same period (Period 6).

<em>Feel free to mark this as brainliest! :D</em>

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R=8.31


Solve for V:
V=nRT/P=2.4*8.31*323.15/202650=.032m^3
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This iron oxide mineral commonly has a reddish color and consistently has red streaks. What mineral is it?
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solution:

This iron oxide mineral commonly has a reddish color and consistently has red streaks. this streaks is hematite.

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3 years ago
What is the mass of 2.9 moles of calcium? Explain please
Alik [6]

Answer:

116 g

Explanation:

From the question given above, the following data were obtained:

Number of mole of calcium = 2.9 moles

Mass of calcium =.?

The mole and mass of a substance are related according to the following formula:

Mole = mass / molar mass

With the above formula, we can obtain the mass of calcium. This can be obtained as follow:

Number of mole of calcium = 2.9 moles

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Cross multiply

Mass of calcium = 2.9 × 40

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Therefore, the mass of 2.9 moles of calcium is 116 g.

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3 years ago
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