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Arturiano [62]
3 years ago
13

Will mark Brainliest help please

Chemistry
1 answer:
dlinn [17]3 years ago
3 0

Answer:

A. 1 atm

Explanation:

Atm means atmosphere

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Need help with question
Lynna [10]

Answer:

C

Explanation:

it is the correct binding type.

7 0
4 years ago
Calculate the percentage composition of each element in calcium hydroxide
sp2606 [1]

Answer:

54.1 % Ca, 43.2 % O, 2.7% H

Explanation:

Molecular formula for calcium hydroxide is Ca(OH)₂

As we don't have a mass of Ca(OH)₂ to find out the percentage composition, we consider that the question refers to 1 mol of compound.

1 mol of hydroxide weighs 74.08 g

1 mol of hydroxide has 1 mol of Ca, therefore 40.08 g are Ca

2 moles of O therefore 32g are O

2 moles of H therefore 2 g are H

Percentage composition is known as (Mass of element/Total mass) . 100

  • (40.08 / 74.08) . 100 = 54.1 %
  • (32 / 74.08) . 100 = 43.2 %
  • (2 / 74.08) . 100 = 2.7%
6 0
3 years ago
When atoms from Column I (Group 1) combine with atoms from Column VII (Group 17): A nearly 100% covalent bond forms. The bond wi
gtnhenbr [62]

The answer you're looking for is B. The bond will be ionic.

7 0
3 years ago
Read 2 more answers
Construct a three-step synthesis of 1,2-epoxycyclopentane from cyclopentanol by dragging the appropriate formulas into the bins.
zubka84 [21]

Answer:

(1) Bromination, (2) E2 elimination and (3) epoxidation

Explanation:

  • In the first step, -OH group in cyclopentanol is replaced by more facile leaving group Br by treating cyclopentanol with PBr_{3}
  • In the second step, E2 elimination in presence of strong base e.g. NaOEt/EtOH produce cyclopentene
  • In the third step, treatment of cyclopentene with mCPBA produces 1,2-epoxycyclopentane
  • Full reaction scheme has been shown below

3 0
3 years ago
What is the average kinetic energy of 1 mole of a gas at -32 degrees Celsius? (R = 8.314 J/K-mol)
romanna [79]

Answer:

3.01 x 103 J

Explanation:

To determine the average kinetic energy of a gas, it is necessary to use the equation, KE = 3/2 RT. The value of R, multiplied by the temperature, and multiplied by 3/2, can provide the average kinetic energy of the gas.

3 0
3 years ago
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