2 years ago

Which group will have elements with the electron dot diagram

Chemistry

1 answer:

VikaD [51]2 years ago

3 0

Answer: group 15

Explanation: I just answered the question and got it right

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Naddika [18.5K]

Answer:

Yh your right..

Explanation:

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2 years ago

Which of the following correctly identifies a bryophyte

Free_Kalibri [48]

Answer:

1) bryophyte are also called amphibians of plants kingdom

2) presence of jacketed sex organ

3) they are thalloid

4) vascular tissue are absent

5) sexual reproduction is Oogamous

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3 years ago

Pleaseeee help me only 29 and 30

stepladder [879]

Answer:

29: a. unbalanced

b. unbalanced

c. unbalanced

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3 years ago

A balloon filled with helium gas occupies 2.50 L at 25°C and 1.00 atm. When released, it rises to an altitude where the temperat

stira [4]

Answer:

8,19 L

Explanation:

The combined gas law is a equation that can be used when the initial and final conditions -pressure,volume,amount of moles,temperature-, of a gas change during a process. It can be written:

$\frac{P1V1}{n1T1}=\frac{P2V2}{n2T2}$

If the amount of the gas remains constant, then n1=n2 and we have:

$\frac{P1V1}{T1}=\frac{P2V2}{T2}$

For the problem we have:

Note: When working with gases is important to use absolute temperature values (°K, °K=°C+273,15):

P1=1 atm, V1=2,5L, T1=25+273,15=298,15°K

P2=0,3 atm, V2=?, T2=20+273,15=293,15°K

$V2=\frac{P1V1T2}{T1P2}=\frac{1atm*2,5L*293,15K}{298,15K*0,3atm}=8,19L$

The new volume of the balloon is 8,19 L.

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3 years ago

What substances is the most soluble in water?

irina1246 [14]

Common salt
sulfur dioxide

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3 years ago