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Scilla [17]
3 years ago
5

Which daughter element is produced from the alpha decay of 213 over 85 At ?

Chemistry
1 answer:
pantera1 [17]3 years ago
7 0

Answer:

209

83 Bi

Explanation:

213 213 - 4 4

85 At = 85 - 2 Y + 2 He

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A sample 0. 100 moles of a gas is collected at at stp. What is the volume of the gas in liters?
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A sample 0. 100 moles of a gas is collected at at STP . 2.24 is the volume of the gas in liters.

The STP means standard temperature and pressure.

At STP,

Temperature = 0 °C =273 K

Pressure = 1 atm

We get value of volume by using ideal gas equation,

PV = nRT

  • P is the pressure of the gas = 1 atm
  • V is the volume occupied by the gas = ?
  • n is the number of the moles = 1 mole
  • T is the temperature of the gas = 273 K or  0 °C
  • R universal gas constant = 8.31 J/ mole × K

Calculation,

Since, one mole of a gas occupy 22.4 L volume at STP

So, for 0.1 mole volume occupy = 22.4L × 0.1 mole/1 mole =  2.24L

To learn more about volume at STP,

brainly.com/question/1542685

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1 year ago
C3H8 + 5O2 → 3CO2 + 4H2O
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Answer:

16.5moles of CO2

Explanation:

Molar mass of O2 is 32g/Mol

No of mole = 880/32 = 27.5 moles

27.5 Mol of O2 gives X mole of CO2

5 mole of O2 gives 3 moles of CO2

No of mole of CO2 = (27.5×3)/ 5 = 16.5moles

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The answer is A,friend.

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