The general formula for mass percent of a solution is:
% m/m = [grams of solute] / [grams of solution] * 100
And grams of solution = grams of solute + grams of solvent.
So, in our problem:
Solute = NaCl => mass of solute = 59.56 g
Solvent = H2O => mass of solvent = 165.1 g
=> mass of solution = 59.56 g + 165.1 g = 224.66 g
=> % m/m = [59.56 / 224.66] * 100 = 26.51 g (using four significant figures).
Answer: 26.51%
The answer for the above question is the control. A control is that particular test that is done under standard conditions. Therefore, a controlled experiment is an experiment is where one test is done under standard or normal conditions, and all the other tests compare to the standard conditions. The standard conditions are majorly a temperature of 273 K or 0 degrees Celsius, and a pressure of 1 atm or 760 mmHg.
Answer:
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Answer:
P^3- > S^2- > Cl^- > K^+ > Sc^3+
Explanation:
Ionic radii is an example of physical properties of Periodicity.
The size of an atom's ion is difficult to estimate because of the electronic distribution and arrangement. This is due to the fact that the atom' ion have no definite outer boundary. In order to circumvent this problem, the atom's ion is estimated in a crystal lattice in terms of its ionic radii.
Ionic radii is taken as half the distance between atomic ions in a crystal lattice. Across a period in the periodic table , ionic radii decreases progressively from left to right.
Down the group, the ionic radius increases from top to bottom.
So the arrangement of the given elements from largest to smallest radius in the decreasing order of ionic radius will be:
P^3- > S^2- > Cl^- > K^+ > Sc^3+
<span>a. It melts at 1455oC I know this is correct I need One more</span>
