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julsineya [31]
3 years ago
14

if your total amout of liquid in milliliters is 10 and you total amout of water in milliliters is 7.what is the consentration of

water in liquid? PLS help fast
Chemistry
1 answer:
Dominik [7]3 years ago
7 0

3 concentration of the water

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Ethanedioic acid, a compound that is present in many vegetables, has a molar mass of 90.04 g/mol and a composition of 26.7% Carb
aleksandrvk [35]

Answer:

Empirical CHO2

Molecular C2H2O4

Explanation:

To determine the formulas, firstly, we need to divide the percentage compositions by the atomic masses.

Kindly note that the atomic mass of carbon, oxygen and hydrogen are 12, 16 and 1 respectively. We proceed with the division as follows:

C = 26.7/12 = 2.225

H = 2.2/1 = 2.2

O = 71.1/16 = 4.44375

We then proceed to divide by the smallest value which is 2.2 in this case

C = 2.25/2.2 = 1

H = 2.2/2.2 = 1

O = 4.44375/2.2 = 2

Thus, the empirical formula is CHO2

We now proceed to get the molecular formula as follows

[12+ 1 + 16(2) ]n = 90.04

45n = 90.04

n = 90.04/45 = 2

The molecular formula is :

C2H2O4

4 0
3 years ago
What is the value of for this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 kj/mol
sineoko [7]

The value for this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 KJ/mol is 9.91 mol. in equilibrium

<h3>What is an aqueous reaction in equilibrium?</h3>

When a chemical reaction happens at the liquid state and the formation of reactant and product is the same then the reaction is known as an aqueous reaction in equilibrium denoted by K.

δG = − R T ln

          R = universal gas constant 8.313

          δG= 20. 46 kj/mol

           T =  298 k or 24.4 in celcius.

substituting the value in the equation.

20. 46 kj/mol = 8.313 × 24.4 in celcius × K

K =  8.313 × 24.4 in celcius / 20. 46 kj/mo

k = 9.91 mol .

Therefore, The value of this aqueous reaction at 298 k? a b↽−−⇀c dδ°=20. 46 KJ/mol is 9.91 mol. in equilibrium

Learn more about the aqueous reaction in  equilibrium, here:

brainly.com/question/8983893

#SPJ4

5 0
2 years ago
4. Calculate the relative molecular masses of the following substances [RAM: H=1, O=16, S=32, C=12, N=14] a. CH2(NH2)COOH b. H2S
8090 [49]

Answer:

a. CH2(NH2)COOH

molecular \: mass = (12 \times 2) + (5 \times 1) + (14 \times 1) + (16 \times 2)  \\  = 24 + 5 + 14 + 32 \\  = 75 \: grams

b. H2SO4

molecular \: mass = (2 \times 1) + 32 + (16 \times 4) \\  = 2 + 32 + 64\\  = 98 \: grams

4 0
3 years ago
Parts of the experiment that are controlled by the scientist are called
Anni [7]
A. Variables, this is because you can choose what you're testing
8 0
3 years ago
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Express your answer using two significant figures.
Juliette [100K]
Answer

In a diagnostic test for leukemia, a person receives 4.1 ML of a solution containing selenium-75. If the activity of the selenium-75 is 41 ,uCi/ML what dose, in microcuries, does the patient receive?
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