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wariber [46]
3 years ago
10

How many grams are in 4.2 X 10^2 moles of bromine?

Chemistry
1 answer:
ss7ja [257]3 years ago
4 0

Answer:

The answer is below:

Explanation:

3355.968

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In an experiment, a student was assigned to find the formula of an unknown hydrate that weighed 15.67g. The anhydrate, XCO3 (mol
meriva

Answer:

5.0 moles of water per one mole of anhydrate

Explanation:

To solve this question we must find the moles of the anhydrate. The difference in mass between the dry and the anhydrate gives the mass of water. Thus, we can find the moles of water and the moles of water per mole of anhydrate:

<em>Moles Anhydrate:</em>

7.58g  * (1mol / 84.32g) = 0.0899 moles XCO3

<em>Moles water:</em>

15.67g - 7.58g = 8.09g * (1mol / 18.01g) = 0.449 moles H2O

Moles of water per mole of anhydrate:

0.449 moles H2O / 0.0899 moles XCO3 =

5.0 moles of water per one mole of anhydrate

6 0
2 years ago
Please help!!! DUE IN 10 minutes
NARA [144]

Answer:

90

   Th

    232.04

Explanation:

90 - atomic number

  Th - element symbol

    232.04 - atomic mass

4 0
2 years ago
What does the subscript 2 indicate in the formula O2? Oxygen transferred 2 electrons to form the bond. Each oxygen atom is shari
Tom [10]

Answer:There are two atoms in the molecule.

Explanation: All gases are diatomic i.e they are covalently bonded to another atom of the same element in order to attain stability. O atom is usually unstable because of it's incompletely filled outermost shell.

3 0
3 years ago
Read 2 more answers
Burning charocal is that physical or chemical​
Arlecino [84]
Burning charcoal is a chemical reaction called combustion
6 0
3 years ago
Which phrase related to electromagnetism applies only to electric force? A. Attraction and repulsion B. North and south C. Push
iogann1982 [59]

Answer:

positive and negative

Explanation:

ik its prob not helpful now but ye sorry no ones answered lol

3 0
2 years ago
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