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Scilla [17]
3 years ago
6

HELP ASAP this is timed yes it's a k12 quiz so HELP ME PLS!!!

Chemistry
2 answers:
Yanka [14]3 years ago
5 0
It should be diploid sporophyte and haploid gametophyte stages
xz_007 [3.2K]3 years ago
4 0

Answer:

alternation of generations, also called metagenesis or heterogenesis, in biology.

Explanation:

Try A

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A sample of gas in a sealed container (fixed volume) is heated from room temperature to 80.0°C.
inna [77]
Hello!

A) When the temperature inside the container increases, the pressure inside the container increases as well. 

An example for that is when you have an aerosol can and start heating it. The pressure of the gas inside the aerosol can will start to increase, and that would lead to the exploding of the can if heating is kept for too long. Bombs work on this principle too: The heat from the violent chemical reaction inside the closed compartment increase the pressure of the gases until the fragments are ejected at high velocities. 

B) The effect of temperature on the pressure of a gas illustrates Gay-Lussac's Law.

This law was formulated by the famous French chemist that gives it its name. It relates the expansion of a gas with the increase in temperature when the volume is left constant. The Gay-Lussac's Law can be expressed as follows, for the case of this exercise:

\frac{P1}{T1}= \frac{P2}{T2} \\ \\ P2= \frac{P1}{T1}*T2=P1* \frac{80 degC}{25degC}= P1*3,2

You can see that the factor that is multiplying P1 is higher than 1 for the case of heating from 25 °C to 80 °C, so the pressure will increase.

C) At a molecular level, when the temperature is raised the kinetic energy of the molecules inside the container will increase. This increase in the kinetic energy will cause the molecules to move faster, and to hit the walls of the container more often. This causes an increase in the pressure inside the container because there more hits means more force on the walls of the container, and that is the definition of pressure. 

Have a nice day!
8 0
3 years ago
Which of these materials is an example of a conductor? (of electricity)
Sidana [21]
I think it would be wool fabric, D. Because when you get a piece of wool fabric and rub it against a balloon it creates static electricity. Hope I helped some :) 
3 0
3 years ago
Read 2 more answers
Samples of this drawing medium have been dated back to 30,000 BCE. Group of answer choices silverpoint charcoal pencil color pen
GuDViN [60]

Charcoal is the sample of this drawing medium have been dated back to 30,000 BCE and is denoted as option B.

<h3>What is Charcoal?</h3>

This is referred to a black carbon residue which is heated in insufficient oxygen to give it a light weight.

It is used for drawing and has been in existence for as long as 30,000 BCE hence the reason why it is the most appropriate choice.

Read more about Charcoal here brainly.com/question/22220547

#SPJ1

7 0
2 years ago
Can someone please help me?
Dmitry [639]

Answer:

The answer to your question is in the attachment.

Explanation:

Tell me if you understand

6 0
3 years ago
If the pressure of a 2. 00 L sample of gas is 50. 0 kPa, what pressure does the gas exert if its volume is decreased to 20. 0 mL
N76 [4]

The equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

The pressure of the gas with respect to volume is given with inverse proportion. The ideal gas equation is given as:

PV=nRT

<h3>Equation for relation between volume and pressure</h3>

The initial pressure of the gas has been given as, P_1=50\;\rm kPa

The initial volume of the gas has been, V_1=2\;\rm L

The final volume of the gas has been, V_2=0.02\;\rm L

The final pressure of the gas, P_2 is given as:

P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}

Thus, the equation used for the calculation is P subscript 1 V subscript 1 equals P subscript 2 V subscript 2. Thus, option B is correct.

Learn more about ideal gas, here:

brainly.com/question/8711877

3 0
3 years ago
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