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andrew-mc [135]
3 years ago
14

Determine the morality of the solution containing 2.4 m o l of KL in 140 ml total volume of solution

Chemistry
1 answer:
zhuklara [117]3 years ago
5 0
Memorize that molarity = moles/liters and you can get these

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The reaction NA3PO4(aq) + 3 AgNO3(aq) → Ag3PO4() + 3NaNO 3( aq) is best classified as a(n)?
Natasha2012 [34]

Answer:

Double replacement reaction.

Explanation:

The Na and Ag atoms both (double) trade places (replacement) with each other.  

8 0
1 year ago
Valeric acid, HC5H9O2 (Ka = 1.5 ✕ 10−5), is used in the manufacture of magnesium valerate, a nerve-calming agent. What is the hy
Studentka2010 [4]

Answer:

[H^+]=0.00332M

Explanation:

Hello,

In this case, considering the dissociation of valeric acid as:

HC_5H_9O_2 \rightleftharpoons C_5H_9O_2 ^-+H^+

Its corresponding law of mass action is:

Ka=\frac{[H^+][C_5H_9O_2^-]}{[HC_5H_9O_2]}

Now, by means of the change x due to dissociation, it becomes:

Ka=\frac{(x)(x)}{0.737-x}=1.5x10^{-5}

Solving for x we obtain:

x=0.00332M

Thus, since the concentration of hydronium equals x, the answer is:

[H^+]=x=0.00332M

Best regards.

7 0
3 years ago
I need help with this definitions!!!
abruzzese [7]
Rock cycle - a process in which a rock forms, changes from one type of rock to another, forms again by processes on and in the Earth.

Metamorphic Rock - Rocks changed by intense heat or extreme pressure.

Sedimentary Rock - A rock that forms when sediments are compacted and cemented together.

Igneous Rock - A rock that forms when molten rock cools and hardens.
3 0
3 years ago
Before the three-dimensional structure of DNA was discovered, scientists knew that DNA contained nitrogenous bases. The table be
katovenus [111]

Answer:

Complementary base pairing rules

Thymine 23

Guanine 27

Explanation:

Complementary base pairing rules state that adenine always pairs with thymine, and cytosine always pairs with guanine in a double stranded DNA helix This means that in a double stranded DNA molecule, there will be exactly the same amount of thymine as adenine, and exactly the same amount of guanine as cytosine. Therefore, there is 23% of thymine, and 27% of guanine

8 0
3 years ago
An orbital with n = 4 and ℓ = 2 would be described as
zaharov [31]

Answer:

4d

Explanation:

n = 4 and l = 2

shells : S P. D. f

L : 0. 1. 2 3

  • so when l is 2 it belongs to a D-block element
8 0
3 years ago
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