Answer:
285.6 g
Explanation:
The elevation of the boiling point of a solvent that has a solute nonvolatile dissolved is called ebullioscopy, and the change in the temperature may be calculated by the Raoult's law:
ΔT = Kb.W.i
Where<em> ΔT</em> is the temperature change, <em>Kb</em> is the ebullioscopy constant, <em>W</em> is the molality and <em>i</em> is the Van't Hoff factor, which determinates the particles that affect the proper.
The molality is:
W = m1/(M1xm2)
Where <em>m1</em> is the solute mass (in g), <em>M1</em> is the molar mass of the solute, and <em>m2</em> is the mass of the solvent (in kg). Sodium chloride has molar mass equal to 58.5 g/mol (23 of Na and 35.5 of Cl), so:
(100 - 95) = 0.512xWx2
5 = 1.024W
W = 4.883 m
W = m1/(M1xm2)
4.883 = m1/(58.5x1)
m1 = 285.6 g
0.250 mol H2 or 0.5 grams H2. Convert your grams to moles (Na 11.2g = 0.5mol | 9g H2O = .5mol) then use your mole ratio (Na / H2 = 2/1 | H2O 2/1) as a proportion to calculate the # of moles produced from each reactant ( 2/1 = .5/x [solve for x]) and then convert your moles (0.25mol H2) to grams using the molar mass of H2 (H[1]x2 = 2) using multiplication. (moles x molar mass) (.250 x 2) to get your answer of 0.5 grams H2
Answer:
pizza is a mixture of a lot of things like dough, sauce, meat, veggies, cheese, etc.
:D
<span>Dominos are similar in that the movement of one domino causes others to fall, which is a chain reaction. The problem with dominos is that one domino usually causes one other domino to fall which is a linear chain reaction (unless the dominos are set to knock over more dominos as in a fan shape). In nuclear fission of Uranium the reaction is an exponential growth chain reaction. The fission of one atom of U235 releases two or three neutrons which can cause other atoms to split which each release 2-3 neutrons and so on. In this way one split causes 3 splits which cause 9 splits which cause 27 splits and so on. A better analogy is shown in the video where the mousetrap releases 2 balls which set off 2 traps which set off 4 traps.</span>