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4 years ago

8

Oxalic acid, H2C2O4, reacts

1 answer:

Dominik [7]4 years ago

6 0

Answer:0.005M

Explanation:

First deduce the oxidation and reduction half equations and from that obtain the balanced redox reaction equation. From that, the number of moles of reacting species are seen from the stoichiometry of the reaction from which the number of moles of oxalate is obtained and substituted to obtain the molar concentration of oxalate.

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Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and natural abundances of 78.99%, 10

Darya [45]

Atomic mass of magnesium = (23.99 x 78.99%) + (24.99 x 10.00%) + (25.98 x 11.01%)
= 24.31 g/mol

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4 years ago

Caffeine is used commercially as a(n):

Nataly [62]

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3 years ago

A mysterious compoud with the chemical formula MX (Ksp 1.27x10-36) is present in two different solutions. What is its molar solu

qwelly [4]

<u>Answer:</u> The molar solubility of MX is $2.54\times 10^{-36}M$

<u>Explanation:</u>

We are given:

$K_{sp}(MX)=1.27\times 10^{-36}$

The chemical equation for the ionization of MX follows:

$MX\rightleftharpoons M^+(aq.)+X^-(aq.)$

S S

The expression of $K_{sp}$ for above equation is:

$K_{sp}=S\times S$ ......(1)

The chemical equation for the ionization of $M_2SO_4$ follows:

$M_2SO_4\rightleftharpoons 2M^+(aq.)+SO_4^{2-}(aq.)$

0.25M 0.5M 0.25M

Total concentration of cation from both the equation is:

$[M^+]=0.5+S$

As, $K_{sp}(MX)$ , so S is also very very less than 1 and can be easily neglected.

So, $[M^+]=0.5M$

Putting values in equation 1, we get:

$1.27\times 10^{-36}=0.5\times S\\\\S=2.54\times 10^{-36}M$

Hence, the molar solubility of MX is $2.54\times 10^{-36}M$

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3 years ago

Truth or dare? Im kinda bored lol

IgorC [24]

Answer:

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3 years ago

Read 2 more answers

Calculate the percent error. A block has a true mass of 16.9 g. A student masses it to be 10.5 g. What is the student's percent

KIM [24]

Answer:

37.9%

Explanation:

x/100 × 16.9 = 10.5

16.9x/100=10.5

16.9x=1050. (÷ b.s by 16.9)

x=62.1%

100%-62.1%=37.9%

7 0

4 years ago