Answer:
ii. < iv. < i. < iii.
Explanation:
Hello,
At first, the entropy is lower in solid-phase systems since their particles are molecularly closer. Next, by knowing that the higher the temperature, the higher the entropy, the gaseous HCl at 25 ºC occupies the second place. After that, it is clear 2 moles of HCl have more entropy than just 1 since the larger the amount of mater the higher the entropy.
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By the claperyron equation<span>:
T = 20.0ºC + 273.15 => 293.15 K
R = 0.082 atm
Therefore:
P x V = n x R x T
5.45 x 7.00 = n x 0.082 x 293.15
38.15 = n x 24.0383
n = 38.15 / 24.0383
n = 1.587 moles of C3H8
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<span>Science involves Observation. With out observation then you do not have science. So, if you were studying plants for instance, you would be looking at the plants and drawing conclusions based upon your observations and experiments (and the observation of the experiments). Something that is not scientific is the theories of how this world came about. Neither the evolutionist view or the Creationist view is scientific, no one can observe what happened thousands of years ago. The theories of how this world came about are merely faith based. Atheist put their faith in billions of years and Christians to a higher power. So that would be an example of something that is not scientific.</span>
Answer:
62.586 gram
Explanation:
moles of Al(OH)3 = mass / molar mass = 35.1 / (27+17x3) = 0.45 mol
moles of H2SO4 = mass / molar mass = 53.94 / (2+32+16x4) = 0.55 mol
H2SO4 is the limiting reagent (reacts completely)
⇒ moles of Al2(SO4)3 is worked out by moles of H2SO4
moles of Al2(SO4)3 = moles of H2SO4 / 3 = 0.183 mol
mass of Al2(SO4)3 = mole x molar mass = 0.183 x (27x2 + 96x3) = 62.586 gram
Answer:
All helium atoms have two protons, and no other elements have atoms with two protons. In the case of helium, the atomic number is 2. The atomic number of an element is usually written in front of and slightly below the element's symbol, like in the Figure below for helium.