Answer:
Air is a collection of different gases. Mainly nitrogen, and then oxygen. Gas is loosely bound atoms of an element or collection of such in compounds above the temperature required to make them liquid, and colder to make them solid.
Explanation:
hmu if you anything els!
Answer:
22s
Explanation:
Given parameters:
Acceleration = 25m/s²
Final velocity = 550m/s
Initial velocity = 0m/s
Unknown:
Time taken = ?
Solution:
To solve this problem, we are going to use one of the motion equations:
v = u + at
v is the final velocity
u is the initial velocity
a is the acceleration
t is the time taken
550 = 0 + 25 x t
550 = 25t
t = 22s
1. The balanced equation tells us that 2 moles of H2S produce 2 moles of H2O.
8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced
8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically
% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 % yield
2. Calculate moles of each reactant.
150.0 g N2 x (1 mole N2 / 28.0 g N2) = 5.36 moles N2
32.1 g H2 x (1 mole H2 / 2.02 g H2) = 15.9 moles H2
The balanced equation tells us that we need 3 moles of H2 to react with every 1 mole of N2.
So if we have 5.36 moles N2, we need 3x that = 16.1 moles H2. Do we have that much available? No, just under at 15.9 moles. So H2 is the limiting reactant. At the end of the reaction there will be a little N2 left over.
Answer: The greenhouse gases cause Earth's surface to heat up from the sunlight.
Explanation: The greenhouse gases causes the Earth's surface to warm up in the morning and at night, the surface cools down. When it cools down, that gives the heat a chance to get back into the air, but some of the heat is trapped (which is caused by the greenhouse gases). That's why, on average, Earth stays at 58 degrees Fahrenheit.
<span>Scientific knowledge
can be gained through experiment by doing a thorough experimental procedure
that will enable to answer the objectives of the experiment that will lead to a
scientific knowledge. Through experimentation you can know the behavior of a
variable with respect to a certain variable. This can also answer some
knowledge gap about certain topic</span>
