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Veseljchak [2.6K]
3 years ago
8

Can someone please help me! I really need to do this so I can pass this class it’s the only assignment I haven’t done!!

Chemistry
1 answer:
maks197457 [2]3 years ago
4 0

Answer:

1. 868.8832g

2. .0053385mol

3.34.87 mol

4. 7049.088 g

Explanation:

I used the molar mass equation M= gram/mol and plugged in the numbers for each equation to figure out the missing part.

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How many moles of H2 are in a flask with a volume of 2500 mL at a pressure of 30.0 kPa and a temperature of 27oC?
quester [9]

Answer:

0.0300 moles of H₂

Explanation:

The original equation is PV = nRT. We need to change this to show moles (n).

n = \frac{PV}{RT}

It's important to convert your values to match the constant (r) in terms of units.

30.0 kPa = 0.296 atm

2500 mL = 2.50 L

27 °C = 300 K

Now, plug those values in to solve:

n = \frac{(0.296)(2.50)}{(0.0821)(300)}    -  for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)

Finally, you are left with n = 0.0300 moles of H₂

4 0
3 years ago
Indicate if each state below is either True or False: a. If a substance is oxidized, it gains electrons b. If an ion is oxidized
myrzilka [38]

Answer:

a. False

b. True

c. False

d. True

3 0
2 years ago
Which of the following is a part of the Kinetic Molecular
GarryVolchara [31]

The Kinetic Molecular Theory exposes, qualitatively and quantitatively, all the laws that the gas field occupies, which explains that molecules in a gas move rapidly.

The Kinetic Molecular Theory describes the behavior of a gas mass, starting from the behavior of the individual molecules.

  • It proposes that the molecules of a gas are in a rapid continuous random movement, which is only altered by the collisions that take place with each other or with the walls of the container.

  • All the collisions produced are elastic, that is, the kinetic energy is not modified or altered by said collision.

Therefore, we can conclude that the Kinetic Molecular Theory describes the behavior of gases, and proposes that gas molecules are in constant chaotic motion, colliding elastically with each other rapidly.

Learn more about Kinetic Molecular Theory here: brainly.com/question/8369832

5 0
3 years ago
Based off molecular polarity determined by VSEPR theory, in which solvent would glucose be the least soluble?
yawa3891 [41]

Answer:

Glucose will be least soluble in non polar solvent

Explanation:

Glucose is a polar compound

According to VSEPR theory like compounds are soluble in like solvents means polar compounds are soluble in polar solvents and non polar compounds are soluble in non polar compounds

As glucose is a polar compound so it will be more soluble in polar solvent and least soluble in non polar solvent  

6 0
3 years ago
How many atoms are present in 2.30 moles of Carbon?
Nadusha1986 [10]
A level of numbers I don’t understand
8 0
3 years ago
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