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Diano4ka-milaya [45]
3 years ago
12

A student was asked to separate a mixture of chemicals. The weight of each component within the mixture is as follows: potassium

bromide 2.53g and 0.760g barium sulfate. What is the percentage of barium sulfate within the mixture?
Chemistry
1 answer:
hram777 [196]3 years ago
6 0

Answer:

a

Explanation:

f

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Identify each of the following sets of quantum numbers as allowed or not allowed in the hydrogen atom.
Westkost [7]

Answer:

See explanation.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to firstly recall the electron configuration of hydrogen:

1s^1

To realize that the principal quantum number is 1, the angular is 0 as well as the magnetic one; therefore we infer that all the given n's are not allowed, just l=0 is allowed as well as ml=0 yet the rest, are not allowed.

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5 0
2 years ago
How many grams of water will form if 10.54 g H2 react with 95.10 g O2?
sergeinik [125]

Answer:

94.0

Explanation:

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7 0
3 years ago
Having been heated to 800 K , at some point the tank starts to leak. By the time the leak is repaired, the tank contains only ha
Liula [17]

Answer: The temperature of the gas reduced to 400K.

Explanation:

Stated that ; The pressure remains the same, that is initial and final pressure equals 1atm.

Applying Charles Law

V1/T1 = V2/T2

Initial volume V1 = 1

Final volume V2 = 1/2 (halved)

Initial temperature T1 =800K

Final temperature T2 = ?

(1/800) = (1/2)/T2

T2 = 800/2

T= 400K

Therefore, when the volume is halved, the temperature reduced also to half ( 400K)

3 0
3 years ago
If arranged in order of increasing atomic mass, which element would come after chlorine?
Eva8 [605]
Look at the periodic table the element next at the right of Cl is the Ar and the atomic mass is 39.948 is bigger than the Cl 35.45. All the elements after that has mases bigger than Cl.
3 0
3 years ago
Read 2 more answers
1. How is different kind of molecules different? And similar?
dexar [7]

Answer:

1.Molecules are made of atoms. So different molecules can have different (or same) number of atoms they are made of.Different atoms are made of different number of protons of neutrons in the nucleus (also electrons around the nucleus but they are very small even compared to atom and don’t add up for volume or mass) therefore their radius and mass are different.

2.Chromatography works because of differences in the properties of molecules in materials.some molecules differ in shape and size. These differences in molecular properties allow scientists to separate compounds into individual molecules using chromatography.

Explanation:

hope this helps

5 0
2 years ago
Read 2 more answers
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