Yes. I was able to think of non-living things suck as, a table and a chair and a countertop.
b.) 4.0 x 10-^2
c.) 2.5 x 10-^2
d.) 4.0 x 10-^13
Answer: The in a solution is
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
To calculate the pOH of the solution, we use the equation:
We are given:
Putting values in above equation, we get:
The in a solution is
The concentration of H3O+ in a solution with OH− concentration of 2.5 x 10-2 M is 4.0 x 10^-13 M, based on the relationship between H3O+ and OH− in acid-base chemistry.
The question asks for the concentration of hydronium ion ([H3O+]) in a solution with a hydroxide ion concentration ([OH−]) of 2.5 x 10-2 M. This falls under the topic of acid-base chemistry, where the product of [H3O+] and [OH−] is always equal to Kw, the ionic product of water.
In this case, the formula we use is [H3O+] = Kw / [OH–]. Assuming Kw is 1.0 x 10-14 (which is true at 25 degree Celsius), the calculation is [H3O+] = (1.0 x 10^-14) / (2.5 x 10^-2). The answer will be: 4.0 x 10^-13 M.
Therefore, the concentration of [H3O+] in the given solution is 4.0 x 10^-13 M, which matches option d.) 4.0 x 10^-13.
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Answer:
19.264×atoms are present in 3.2 moles of carbon.
Explanation:
It is known that one mole of each element is composed of Avagadro's number of atoms. This is same for all the elements in the periodic table.
So, as 1 mole of any element = Avagadro's number of atoms = 6.02× atoms
It is as simple as understanding a dozen of anything is equal to 12 pieces of that object.
As here the moles of carbon is given as 3.20 moles, the number of atoms in this mole can be determined as below.
1 mole of carbon = 6.02 × atoms
Then, 3.20 moles of carbon = 3.20 × 6.02 × atoms
Thus, 19.264×atoms are present in 3.2 moles of carbon.
study calculated that every 70.0 g serving of a certain brand of Mac & Cheese contains 260 calories, 3 g of fat, 16 g of
carbohydrates, 9 g of protein, 570 mg of sodium, and 17.6 mg of food dyes. What is the mass percent of sodium in the Mac &
Cheese?
0.8149
12.3%
25.1%
45.6%
Answer:
0.8149
Explanation: