1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Cerrena [4.2K]
4 years ago
12

5

Chemistry
1 answer:
Leya [2.2K]4 years ago
3 0

Answer:

E. a small yellow ball that represents the Sun

Explanation:

key word on the question, 'physical'

You might be interested in
Does the statement describe a scientific law?
ale4655 [162]

Answer:

I think it's C sorry if I am wrong

8 0
3 years ago
In which part of the cell is the majority of the energy released from the breakdown of glucose
Vladimir [108]

<em>Answer</em><em>:</em>

<em>Glycolysis</em>

<em>E</em><em>xplanation</em><em> </em><em>:</em>

Glycolysis is the first step in the breakdown of glucose to extract energy for cell metabolism.Many living organisms carry out glycolysis as part of their metabolism. Glycolysis takes place in the cytoplasm of most prokaryotic and all eukaryotic cells.

7 0
3 years ago
Read 2 more answers
Determine the root-mean square speed of CO2 molecules that have an average kinetic energy of 4.2 x10-21 J per molecule.
strojnjashka [21]
<span>Determine the root-mean-square sped of CO2 molecules that have an average Kinetic Energy of 4.21x10^-21 J per molecule. Write your answer to 3 sig figs.
</span><span>
E = 1/2 m v^2 

If you substitute into this formula, you will get out the root-mean-square speed. 

If energy is Joules, the mass should be in kg, and the speed will be in m/s. 

1 mol of CO2 is 44.0 g, or 4.40 x 10^1 g or 4.40 x 10^-2 kg. 

If you divide this by Avagadro's constant, you will get the average mass of a CO2 molecule. 

4.40 x 10^-2 kg / 6.02 x 10^23 = 7.31 x 10^-26 kg 

So, if E = 1/2 mv^2 

</span>v^2 = 2E/m = 2 (4.21x10^-21 J)/7.31 x 10^-26 kg = 115184.68 
Take the square root of that, and you get the answer 339 m/s.
8 0
4 years ago
A 0.245-L flask contains 0.467 mol co2 at 159 °c. Calculate the pressure using the ideal gas law.
lubasha [3.4K]

Answer:

Pressure, P = 67.57 atm

Explanation:

<u>Given the following data;</u>

  • Volume = 0.245 L
  • Number of moles = 0.467 moles
  • Temperature = 159°C
  • Ideal gas constant, R = 0.08206 L·atm/mol·K

<u>Conversion:</u>

We would convert the value of the temperature in Celsius to Kelvin.

T = 273 + °C

T = 273 + 159

T = 432 Kelvin

To find the pressure of the gas, we would use the ideal gas law;

PV = nRT

Where;

  • P is the pressure.
  • V is the volume.
  • n is the number of moles of substance.
  • R is the ideal gas constant.
  • T is the temperature.

Making P the subject of formula, we have;

P = \frac {nRT}{V}

Substituting into the formula, we have;

P = \frac {0.467*0.08206*432}{0.245}

P = \frac {16.5551}{0.245}

<em>Pressure, P = 67.57 atm</em>

4 0
3 years ago
I am a celestial body that does not produce light. I orbit a planet
Artyom0805 [142]
A moon would be the correct answer.
5 0
3 years ago
Other questions:
  • Hich statement describes the process of fusion, but not the process of fission?
    10·1 answer
  • Did I get the answer correct, and could someone possibly explain?
    14·1 answer
  • Which of the following correctly identifies active transport? (1 point) Transport proteins move large molecules from areas of lo
    10·2 answers
  • Which of the following set ups which converts centimeters to fit
    7·1 answer
  • Chemical reaction to make a foam?​
    8·1 answer
  • If the hockey player exerts 240 N of work over 2.5 m when hitting a hockey puck,
    15·1 answer
  • Identify each definition that applies to the compound in red. Check all that apply.
    14·2 answers
  • Students mixed 20 mL of white glue and 20 mL of water in a cup. They added three drops of food coloring to the mixture. Then, 15
    7·1 answer
  • How many grams are in 3.00 x 10^24 molecules of Zn(C2H3O2)2?​
    14·1 answer
  • What is the total number of atoms in 0.20 mol of propanone, CH3COCH3?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!