No. Of moles of ch4 = 100/(12+4) =6.25
No of moles of co2 = 6.25
A) They have different masses
Answer:
Option A. Solution B is basic, and solution A is neutral.
Explanation:
The pH of a solution is simply defined as the measure of acidity or alkalinity of a solution.
The pH scale ranges from 0 to 14 with the following readings:
0 to 6 => Acidic solution
7 => Neutral solution
8 to 14 => Alkaline / basic solution.
From the above, we understood that solutions with pH ranging from 0 to 6 are acidic solutions. Those with pH of 7 are neutral solutions while those with pH ranging from 8 to 14 are basic solutions.
With the above information in mind, let us answer the question given above. This is illustrated below:
pH of solution A = 7
pH of solution B = 14
Solution A has a pH of 7. This implies that solution A is a neutral solution
Solution B has a pH of 14. This implies that solution B is a basic solution.
Thus, option A gives the correct answer to the question.
98.857g Na
To find this, set up an equation as so:
4.3 mol Na =
Multiply everything on the top and divide that by everything on the bottom to get the final answer of 98.857g Na.
Hope this helps!
The number of atoms in 259 g of C₁₂H₂₁O₉ is 45 x 10²³ oxygen.
<h3>What is molar mass?</h3>
The molar mass of many compounds can be calculated by dividing the mass of the compound by the number of moles of the compound.
Given the molar mass is 309.29 g/mol
Given weight= 259g
number of moles = mass / molar mass
259g / 309.29g/mol =0.837mol
1 mol contains 6.022 x 10²³ molecules
0.837 mol contain 6.022 x 1023 x 0.837 = 5.0 x 10²³ molecules
1 molecule of C₁₂H₂₁O₉ contains 9 oxygen atoms
5.0 x 10²³ molecules of C₁₂H₂₁O₉ contain 9x 5 x 10²³ oxygen atoms.
=45 x 10²³ oxygen atoms
Thus, the number of atoms in 259 g of C₁₂H₂₁O₉ is 45 x 10²³ oxygen atoms
To learn more about molar mass, refer to the link:
brainly.com/question/22997914
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