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zepelin [54]
3 years ago
6

Which changes in the medium will likely cause the speed of light waves to decrease? Check all that apply.

Chemistry
2 answers:
ValentinkaMS [17]3 years ago
3 0

i believe it’s F sorry if it isn’t right

blondinia [14]3 years ago
3 0

Answer:

The correct options are C ,E and F.

Explanation:

Speed of light changes from medium to medium.If the light is passing from les denser medium to more denser medium its speed get altered.

This is because in the more denser medium particle are closely packed which means light ave encounter more number of particles of medium due to which energy of the light get distributed and results in delay in movement of light through the that medium.Hence, speed of light slows down  in the denser medium.The order of states from less denser to more denser is:

Air < liquid < solid

So when light moves from gas to liquid or from liquid to solid or gas to solid speed of the light wave decreases.

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I added and multiplied i still don't know
hjlf

Answer:

it'a answer number 2

Explanation: you divide the mass by volume and 32.2 divided by 4 is 8.05

8 0
3 years ago
Go'=30.5 kJ/mol
makvit [3.9K]

Answer:

a) Keq = 4.5x10^-6

b) [oxaloacetate] = 9x10^-9 M

c) 23 oxaloacetate molecules

Explanation:

a) In the standard state we have to:

ΔGo = -R*T*ln(Keq) (eq.1)

ΔGo = 30.5 kJ/moles = 30500 J/moles

R = 8.314 J*K^-1*moles^-1

Clearing Keq:

Keq = e^(ΔGo/-R*T) = e^(30500/(-8.314*298)) = 4.5x10^-6

b) Keq = ([oxaloacetate]*[NADH])/([L-malate]*[NAD+])

4.5x10^-6 = ([oxaloacetate]/(0.20*10)

Clearing [oxaloacetate]:

[oxaloacetate] = 9x10^-9 M

c) the radius of the mitochondria is equal to:

r = 10^-5 dm

The volume of the mitochondria is:

V = (4/3)*pi*r^3 = (4/3)*pi*(10^-15)^3 = 4.18x10^-42 L

1 L of mitochondria contains 9x10^-9 M of oxaloacetate

Thus, 4.18x10^-42 L of mitochondria contains:

molecules of oxaloacetate = 4.18x10^-42 * 9x10^-9 * 6.023x10^23 = 2.27x10^-26 = 23 oxaloacetate molecules

3 0
4 years ago
plz help asap (plz don't give helpless answers) and also ill give brainist to those who answer the questing right
Lera25 [3.4K]
1.) Particle B has a greater kinetic energy because when a particle is at higher temperature it contains more energy.

2.) Diagram B best shows the overflow of heat between the particles. It does because of the enclosed space that it is in and how it will circulate in it.

3.) Heat is transferred between object A and B by having object B (warmer) make a reaction with object A (colder).
5 0
4 years ago
how many moles of potassium would you need to prepare 1200 grams of 5.0% potassium sulfate (m/m) solution
Marianna [84]
The  moles  of  potassium  that  you  would    need  to  prepare  1200 g  of  5% potassium   sulfate solution  is    1.538 moles

calculation
  calculate  the mass  potassium using  the below formula

%M/M =  mass  of the  solute(potassium)/mass of the  solvent (potassium  sulfate solution)

let  the  mass  of  potassium be represented by  Y

then  convert %  into fraction  = 5/100

5/100 =  Y/1200
cross  multiplication
100y =  6000
divide  both side by 100

Y=  60 g

moles of potassium =mass/molar  mass

= 60/39=1.538
7 0
4 years ago
A family pool holds 10,000.0 gallons of water. How many cubic meters is this?
Kobotan [32]

Answer:

Hey there!

10000 gallons would be 37.85 cubic meters.

Let me know if this helps :)

5 0
3 years ago
Read 2 more answers
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