Answer:
The decomposition temperature of a substance is the temperature at which the substance chemically decomposes. The reaction is usually endothermic as heat is required to break chemical bonds in the compound undergoing decomposition.
Explanation:
The mass of 3.58 mol of CuCl₂ . 2H₂O is 610.31 grams.
<h3>What is mass?</h3>
Mass is the quantity of matter in a physical body. The product of the molar mass of the compound and the moles of the substance are defined as mass.
The formula is
Mass = molar mass x moles
The molar mass of CuCl₂ . 2H₂O = 170.48 g/mol
To find the molar mass of the compound, add all the atoms of one molecule.
The moles of CuCl₂ . 2H₂O is given that is 3.58 mol
Substituting the value in the formula
3.58 mol x 170.48 g/mol = 610.31 gram
Thus, the mass of 3.58 mol of CuCl₂ . 2H₂O is 610.31 grams.
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Molarity (M) indicates the number of moles of solute per liter of solution (moles/Liter) and is one of the most common units used to measure the concentration of a solution. Molarity can be used to calculate the volume of solvent or the amount of solute.
B.
The jar of sulfur.
Explanation:
The molar mass of sulfur is 32 g/mol
The molar mass of Aluminium is 27g/mol
The molar mass of carbon is 12 g/mol
Therefore based on these numbers, it is evident that a mole of Sulfur weighs the heaviest.
Different elements weight different because their atoms have different mass numbers. The lower you go in the periodic table the heavier the atoms became because they have more atomic units (neutrons and protons) in their nuclei.
