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Elden [556K]
3 years ago
8

Características de la báscula granataria porfi

Chemistry
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

Lowkey dont know the language

Explanation:

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Propanoic acid, ch3ch2cooh, has a pka =4.9. draw the structure of the conjugate base of propanoic acid and give the ph above whi
xenn [34]

Conjugate base of Propanoic acid (CH_{3}CH_{2}COOH is propanoate where -COOH group gets converted to -COO^{1-}. The structure of conjugate base of Propanoic acid is shown in the diagram.

The p^{H} above which 90% of the compound will be in this conjugate base form can be determined using Henderson's equation as propanoic acid is weak acid and it can form buffer solution on reaction with strong base.

p^{H}= p^{k_{a}+ log\frac{[Conjugate base]}{[acid]}=4.9+log\frac{90}{10}=5.85

As 90% conjugate base is present, so propanoic acid present 10%.

8 0
3 years ago
Find the amount in grams of 2.0 x 10^23 atoms Cu
-Dominant- [34]

Answer:

21.182 g

Explanation:

There are about (6.0)(10^23) atoms in one mole of a substance, so the given sample has about 0.333 mol of Cu.

The atomic mass of Cu is 63.546 g/mol, meaning that the answer is about <u>21.182</u><u> </u><u>g</u>

5 0
2 years ago
How do I pass chemistry ?
dedylja [7]

Answer:

Get good grades.

4 0
3 years ago
Can someone tell me how to do this steps by step<br>How many grams is there in 3.65 moles of CuSO4
Bad White [126]
1. you need a periodic table and find the atomic mass of Cu (copper), S (sulfur) and O (oxygen). The atomic mass is the number in the box that corresponds to the element and have several decimal places.

2. atomic mass of 
Cu = 63.546 
S = 32.065
O = 15.9994

3. Then according to the formula of the compound, you add as many time the atomic mass of each element as subindex in the formula and add all the values together to calculate the molecular mass of the compound in grams.

4. 63.546 g + 32.065 g + ( 4 x <span>15.9994) = 159.609 g

5.  this value </span><span>159.609 g is the mass in grams of one mol of CuSO4

6 the problem is asking not for the mass of one mole but the mass of 3.65 moles of CuSO4

7 then you have the multiply the value of one mol by the number of moles that the problem is asking you

8. </span><span>159.609 g x 3.65 = 582.571 g
</span>
9 the answer to the problem will be
"there are 582.571 g of CuSO4 in 3.65 moles of CuSO4"
 
6 0
3 years ago
during a bread making process glucose is converted to ethanol and carbon dioxide causing the bread dough to rise by itself this
yaroslaw [1]

Answer:

Zymase is acting as a catalyst

Explanation:

Zymase is an enzyme that is naturally produced in yeast. Enzymes are biological catalysts that speed up the rates of reactions in living things.

Zymase catalyses the breakdown of glucose into ethanol and carbon dioxide, which causes the bread to rise.

Zymase speeds up this reaction, but is not physically changed itself. Therefore, it is a catalyst.

Actually, zymase represents a collection of enzymes in yeast, not just one!

5 0
3 years ago
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