Hey there!:
Molar mass of Mg(OH)2 = 58.33 g/mol
number of moles Mg(OH)2 :
moles of Mg(OH)2 = 30.6 / 58.33 => 0.5246 moles
Molar mass of H3PO4 = 97.99 g/mol
number of moles H3PO4:
moles of Mg(OH)2 = 63.6 / 97.99 => 0.649 moles
Balanced chemical equation is:
3 Mg(OH)2 + 2 H3PO4 ---> Mg3(PO4)2 + 6 H2O
3 mol of Mg(OH)2 reacts with 2 mol of H3PO4 ,for 0.5246 moles of Mg(OH)2, 0.3498 moles of H3PO4 is required , but we have 0.649 moles of H3PO4, so, Mg(OH)2 is limiting reagent !
Now , we will use Mg(OH)2 in further calculation .
Molar mass of Mg3(PO4)2 = 262.87 g/mol
According to balanced equation :
mol of Mg3(PO4)2 formed = (1/3)* moles of Mg(OH)2
= (1/3)*0.5246
= 0.1749 moles of Mg3(PO4)2
use :
mass of Mg3(PO4)2 = number of mol * molar mass
= 0.1749 * 262.87
= 46 g of Mg3(PO4)2
Therefore:
% yield = actual mass * 100 / theoretical mass
% = 34.7 * 100 / 46
% = 3470 / 46
= 75.5%
Hope that helps!
Answer:
Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life.
We get these from the plants that grow, and the animals that we eat that eat the plants. Most soils have a large supply of nutrients in them, and they get taken up by plants when plants absorb water. Soils need to be healthy to grow large quantities of plants, and animals need plants to grow strong.
Explanation:
Plz mark brainliest thanks
Answer:
Sequence
Explanation:
Physical properties of the proteins are foundation of biological function of them.
A protein molecule is made up from the long chain of the amino acids. Each amino acid is linked to its neighbor by covalent peptide bond. Thus, proteins are also called as polypeptides.
Each protein has unique sequence of the amino acids, exactly same from one molecule to next. Different proteins has its own particular sequence of amino acid. This sequence is responsible for folding and binding of the protein and also its physical characteristics.
Answer:
A
Explanation:
Due to the fact that no one will eat the fish, their population starts growing.
Answer:
Total pressure = 27.35 atm
Explanation:
Given data:
Mass of nitrogen = 12 g
Mass of H₂ = 0.40 mol
Mass of oxygen = 9.0 g
Volume of Container = 1 L
Temperature = 27 °C (27+273 = 300 K)
Total Pressure = ?
Solution:
First of all we will calculate the number of moles of individual gas.
Number of moles = mass/ molar mass
Number of moles = 12 g/ 28 g/mol
Number of moles = 0.43 mol
Pressure of N₂:
PV = nRT
P = nRT/V
P = 0.43 mol × 0.0821 atm.L/mol.K× 300 K/ 1 L
P = 10.6 atm
Number of moles of Oxygen:
Number of moles = mass/ molar mass
Number of moles = 9 g/ 32 g/mol
Number of moles = 0.28 mol
Pressure of O₂:
PV = nRT
P = nRT/V
P = 0.28 mol × 0.0821 atm.L/mol.K× 300 K/ 1 L
P = 6.9 atm
Pressure of H₂:
PV = nRT
P = nRT/V
P = 0.40 mol × 0.0821 atm.L/mol.K× 300 K/ 1 L
P = 9.85 atm
Total pressure:
Total pressure = Pressure of H₂ + Pressure of O₂ + Pressure of N₂
Total pressure = 9.85 atm + 6.9 atm + 10.6 atm
Total pressure = 27.35 atm
