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Norma-Jean [14]
3 years ago
14

Visible light is a mixture of: A.) refraction and reflection B.) atoms and molecules C.) many colors or D.) ultraviolet and nonv

iolet rays ?
Chemistry
2 answers:
irinina [24]3 years ago
8 0
C) Many colors  looks to be correct.
lord [1]3 years ago
4 0
Hello the answer is c
I love kay
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Chemical digestion would not be possible without _____, which speed up the rate of chemical reactions in your body?
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Enzymes in our body increases the speed of chemical digestion.
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4 years ago
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If a buffer has an initial pH of 6.34 and the acid has a Ka of 3.46 × 10-4, what is the ratio of conjugate base to weak acid in
Sloan [31]

Answer: The ratio of conjugate base to weak acid in the buffer system is 758 : 1

Explanation:

The dissociation constant for  acid = K_a=3.46\times 10^{-4}

pH = 6.34

First we have to calculate the value of pK_a.

The expression used for the calculation of pK_a is,

pK_a=-\log (K_a)

Now put the value of K_a in this expression, we get:

pK_a=-\log (3.46\times 10^{-4})

pK_a=3.46

Now we have to calculate the ratio of conjugate base to weak acid in the buffer system

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[\text {conjugate base}]}{[Acid]}

Now put all the given values in this expression, we get:

6.34=3.46+\log \frac{[\text {conjugate base}]}{[Acid]}

\frac{[\text {conjugate base}]}{[Acid]}=758

Therefore, the ratio of conjugate base to weak acid in the buffer system is 758: 1

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4 years ago
What type of energy travels through space as waves?
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Which of the following measurements are listed in the proper mathematical relationship?
VladimirAG [237]

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PVT upon t is equal to k p is equal to k p v is equal to k p upon t is equal to K2

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correct answer is d

4 0
2 years ago
2 SO2(g) + O2(g) + 2 H2O(ℓ) −→ 2 H2SO4(ℓ)
DIA [1.3K]

Answer:

6116g

Explanation:

2SO2(g) + O2(g) + 2H2O(ℓ) −→ 2H2SO4(ℓ)

We want to find the mass in grams of SO2 that is needed to react with 1527 g of O2. First we must convert the grams of O2 to moles of O2 then to moles of SO2 and then to grams of SO2

So first lets find the molar mass of O2

The mass of oxygen according to a periodic table is 15.999

Using this the mass of O2 would be 15.999(2) = 31.988g

Next we need to identify the mole ratio of O2 to SO2

Looking at the equation for 1 mole of O2 there are two moles of SO2

Next we need to find the molar mass of SO2

Again the mass of oxygen is 15.999g and the mass of Sulfur is 32.066

So the mass of SO2 would be 15.999(2) + 32.066 = 64.064g

Now that we have found all the needed conversions :

  • 1 mol O2 = 31.988g
  • 1 mol O2 = 2 mol SO2
  • 1 mol SO2 = 64.064g

We can now use dimensional analysis to calculate the answer.

Kindly check the attached image to see the table. ( sorry if its a bit blurry )
Explanation : The conversions are used to cancel out the units to get to the final unit which is gSO2.

Once the units are cancelled out except for the gSO2 we mutliply and divide based off of what the table says to do.
Here first we divide 1527 by 31.988. We than multiply by 2. Finally we multiply by 64.064 to get the final answer which is 6116gSO2

7 0
2 years ago
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