Answer:
0.027×10²³ atoms of H
Explanation:
Given data:
Mass of phosphoric acid = 0.1488 g
Number of hydrogen atoms = ?
Solution:
First of all we will calculate the number of moles of H₃PO₄.
Number of moles = mass/molar mass
Number of moles = 0.1488 g/ 98 g/mol
Number of moles = 0.0015 mol
1 mole of H₃PO₄ contain = 3 mol of H
0.0015 mol× 3= 0.0045 mol
Now we will calculate the number H atoms.
1 mole = 6.022×10²³ atoms
0.0045 mol×6.022×10²³ atoms / 1 mol
0.027×10²³ atoms of H
Mouth ⇒ oesophagus ⇒ Stomach ⇒ small intestine ⇒ large intestine ⇒ rectum ⇒ anus.
Note: the liver produces bile which neutralises the acidity of hydrochloric acid in the stomach, but food does not go through the liver. Moreover, the pancreas is a major part in enzyme production, but food does not pass through the pancreas either.
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Answer:</h3>
12 moles
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Explanation:</h3>
The equation for the reaction;
CuO(s) + H₂(g) → Cu(s) + H₂O(g)
We are given;
- Moles of copper, Cu is 12 moles
We are required to calculate the number of moles of CuO required;
- From the reaction 1 mole of CuO reacts to produce 1 mole of copper
- Thus, the mole ratio of CuO to Cu is 1 : 1
- Moles of CuO = Moles of Cu
Thus, moles of CuO = 12 moles
Therefore; 12 moles of CuO will be required.
Awnser: The awnser is cloudy
Explanation: I don't have an explanation I just know it
The volume of 0.160 m Li2S solution required to completely react with 130 ml of 0.160 CO(NO3)2 is calculated as below
write the reacting equation
Co(NO3)2 + Li2S = 2LiNO3 + COS
find the moles of CO(NO3)2 = molarity x volume
= 130 ml x 0.160=20.8 moles
since the reacting moles between CO(NO3)2 to LiS is 1:1 the moles of LiS is also 20.8 moles
volume of Lis is therefore = moles of Lis/ molarity of LiS
= 20.8/0.160 = 130 Ml