0.05 mol of oxygen atom.
Explanation:
Mass of potassium hydroxide = 2.79g
Unknown:
Number of moles = ?
Solution:
To solve this problem, find the number of moles of the potassium hydroxide.
Number of moles of KOH =
Molar mass of KOH = 39 + 16 + 1 = 56g/mol
Number of moles of KOH = = 0.05mole
Now,
1 mole of KOH contains 1 mole of oxygen atom
0.05 mole of KOH will have 0.05 mole of oxygen atom.
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Number of moles brainly.com/question/1841136
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The density of liquid water is 1 kg/L.
Mass of water = (1 kg/L)(2.5 L)(1000 g/1 kg) = 2500 g water
The molar mass of water is 18 g/mol.
Moles of water = 2500 g / 18 g/mol = 138.889 mol water
According to Avogadro's number, in one mole of any substance, there are 6.022×10²³ atoms.
Atoms of water = 138.889 mol * 6.022×10²³ atoms/mol = 8.364×10²⁵ atoms of water
In every atom of water, there are 10 protons: 8 from one oxygen atom, and 1 each from the two hydrogen atoms.
Protons of water = 8.364×10²⁵ atoms * 10 protons/atom
<em>Protons of water = 8.364×10²⁶ </em>
The compounds that are present in both waxes and sphingomylin are FATTY ACID AND LONG CHAIN ALCOHOL.
Waxes are diverse type of organic substances which are hydrophobic in nature and they are found in both plant and animals. Sphingomyelin is a type of sphingolipid, which are found in animal cell membranes. It is especially abundant in the membranous myelin sheath which surround some nerve cells.<span />
Answer:
5.50 mil KCI * 2 mol KCIO3 / 2 mil KCI
I don’t know the answer, but my teacher gave me the steps to solve it...
Explanation: