a solution of cacl2 in water forms a mixture that is 35.5% calcium chloride by mass. if the total mass of the mixture is 497.5 g, masses of cacl2 and water are 174g and 323.8 g H2O
Given that the solution is 35.0% CaCl2 by mass, we simply multiply the total mass by 0.350 (35%) to obtain the mass of CaCl2. 0.350 x 497.8 g = 174.23 g = 174 g CaCl2. To find the mass of H2O, simply subtract the mass of CaCl2 from the total mass as follows: mass H2O = 497.8 g - 174 g = 323.8 g H2O.
the quantity of an object's atomic weights expressed in units of atomic mass. It is basically analogous to the mass number (the total of the neutrons and protons in an atom) or the average number that takes into account the presence and abundance of various isotope. The whole mass of one molecule in any specific element is referred to as its atomic mass. The unified element's atomic unit, or "u," is the designation of the mass of an atom. Protons and neutrons make up most of a product's atomic mass. It is therefore roughly equal to its mass number.
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