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labwork [276]
3 years ago
10

Which phrase correctly describes the outer shell of electrons of each atom in most covalent compounds?

Chemistry
2 answers:
d1i1m1o1n [39]3 years ago
8 0
A, I just took the quiz and that was the answer
igor_vitrenko [27]3 years ago
6 0
Yes i do agree to the answer shall be c
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How many grams of aluminum is required to react with 75.0 ml of 2.50 M HCl?
yuradex [85]

Answer:

63 g Al is required to react with 35 mL of 2.50 M hydrochloric acid

I'm sorry if it's wrong, I tried.

Explanation:

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3 years ago
Eddie experimented to find out which freezes at a lower temperature, distilled water or salt water. The steps he used in his exp
olga2289 [7]

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the answer is C. 3. measure the mass of the liquid in both beakers

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4 years ago
A 6.87-L sample of gas has a pressure of 0.732 atm and a temperature of 95 °C. The sample is allowed to expand to a volume of 9.
Jlenok [28]

Answer: The new pressure of the gas, assuming that no gas escaped during the experiment is 0.470 atm

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 0.732 atm

P_2 = final pressure of gas = ?

V_1 = initial volume of gas = 6.87 L

V_2 = final volume of gas = 9.22 L

T_1 = initial temperature of gas = 95^oC=273+95=368K

T_2 = final temperature of gas = 44^oC=273+44=317K

Now put all the given values in the above equation, we get:

\frac{0.732\times 6.87}{368}=\frac{P_2\times 9.22}{317}

P_2=0.470atm

Thus the new pressure of the gas, assuming that no gas escaped during the experiment is 0.470 atm

7 0
4 years ago
What is Bose Einstein state of matter and their examples
Valentin [98]

Answer:

A BEC ( Bose - Einstein condensate ) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero is called BEC.

Examples - Superconductors and superfluids are the two examples of BEC.

Explanation:

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3 years ago
What happens to the energy level of particles when melting occurs
Alenkinab [10]

Answer:

Melting occurs when a solid is heated and turns to liquid. The particles in a solid gain enough energy to overcome the bonding forces holding them firmly in place. Typically, during melting, the particles start to move about, staying close to their neighboring particles, then move more freely.

Explanation:

7 0
4 years ago
Read 2 more answers
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