Your answer to #2 is <span>There are several differences between a </span>physical<span> and chemical </span>change in matter<span> or substances. A </span>physical change<span> in a substance doesn't </span>change<span> what the substance is. In a chemical </span>change<span> where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. </span>
Explanation: Process is diffusion. The gas molecules follow a zig-zag path through the tube as they collide with the air molecules in the tube. The purpose of the glass tube is to eliminate air currents and to see if the gas molecules will move on their own.
<u><em>I guess this helped you</em></u>
<em><u>I hope you would mark me as BRAINLIEST!!</u></em>
Answer:
11690J
Explanation:
Use formula Q = mL
where:
Q = Energy (J)
m = Mass (g)
L = Latent heat of fusion for water (J/g) = 344J/g
Therefore:
Q = 35.0 x 344
Q = 11690J
1GeF3 + 3Cs = 3Csf +1Ge
DONT HATE ME IF ITS WRONG PLS
Answer:
25 mol.
Explanation:
The balanced chemical equation for the reaction depicted in this question is as follows:
4Fe + 3O2 → 2Fe2O3
Based on the above balanced equation, 4 moles of Fe produced 2 moles of Fe2O3.
Hence, 50 moles of Fe will produce as follows:
50 mol Fe × 2 mol Fe2O3/4 mol Fe
= 100/4
= 25 mol of Fe2O3