Elements are made of only one kind of atom. The molecule is made up of two or more kinds of atoms. There is no physical change that can separate the compounds into more than one kind of substance. This makes a compound a pure substance.
Answer:
Calcium chloride cannot melt the ice at -20°C. Cryoscopy is the method of determining a decrease in melting point due to dissolved substances.
Answer:
one factor is the speed at which crystals are formed
<h3> explanation: </h3>
crystals that are formed near or on the surface tend to crystalize faster and therefore are usually smaller crystals deeper in the crust tend to crystalize slower and therefore are larger
Given the volume % of isopropyl alcohol = 36.0 % (v/v)
36.0 mL of isopropyl alcohol is present in 100 mL solution
Volume of the solution = 675 mL
Calculating the volume of isopropyl alcohol present in 675 mL solution:
Volume of isopropyl alcohol in 675 mL solution = 243 mL
Volume of solute (isopropyl alcohol)+Volume of solvent(water) = Volume of the solution
Volume of water present in the solution = 675 mL - 243 mL =432 mL
Answer:
the statement is or are true for all chemical reaction is false
Explanation:
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