Answer:
The answer to your question is: mass = 0.760 g
Explanation:
Data
V = 0.285 L
T = 57°C = 330°K
P = 1 atm
R = 0.082 atm L/mol°K
mass = ?
Formula
PV = nRT
n = PV / RT
Substitution
n = (1)(0.285) / (0.082)(330)
n = 0.285 / 27.06
n = 0.011
mW Pentane = (12 x 5) + (12 x 1) = 72 g
72 g of pentane ----------------- 1 mol
x ----------------- 0.0105 mol
x = (0,0105 x 72) / 1
x = 0.756 g ≈ 0.760 g
Higher concentration of reactants equals faster rate of reaction. Reactions occur when particles collide effectively, and by increasing the concentration of reactants, you increase the number of effective collisions, thereby making the reaction occur faster.
The seasons are caused by the tilt of the Earth on its axis is the correct answer.
Summer starts based off each countries calendar so that can't be right. And during Summer days are longer because we have more sunlight so that one isn't right. And as the earth revolves around the sun it stays in relatively the same distance away so that one is incorrect.
Hope this helps. (;
Usually, they aren't found in the same place because fossils are already very rare. For every 1 billion humans, there would only be one fossil. So the odds would be very slim for them both to be found in the same place.
Hope I helped!
Let me know if you need anything else!
~ Zoe
<span>Scientific notation is used to express large numbers in a way that is to use, readable, comparable to other numbers and convenient. It is especially useful for things that are very large and very small because it is very tedious to work with many zero's when completing complex math problems.</span>