Ponds are most likely to dry up
Answer:
26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃
Explanation:
To determine the number of moles of O₂ that are needed to react completely with 35.0 mol of FeCl₃, it is possible to use the reaction stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), and rule of three as follows: if 4 moles of FeCl₃ react with 3 moles of O₂, 35 moles of FeCl₃ with how many moles of O₂ will it react?
![molesofO_{2} =\frac{35 moles of FeCl_{3}*3 moles of O_{2} }{4 moles of FeCl_{3}}](https://tex.z-dn.net/?f=molesofO_%7B2%7D%20%3D%5Cfrac%7B35%20moles%20of%20FeCl_%7B3%7D%2A3%20moles%20of%20O_%7B2%7D%20%20%7D%7B4%20moles%20of%20FeCl_%7B3%7D%7D)
moles of O₂= 26.25 ≅ 26.3
<u><em>26.3 moles of O₂ are needed to react completely with 35.0 mol of FeCl₃</em></u>
Answer:- The weight of the arrow is 0.75 ounces.
Solution:- It is a unit conversion problem where we are asked to convert grains to ounces. We could easily do this conversion using two steps conversion, grains to pounds and pounds to ounces.
We know that, 1 pound = 7000 grains
1 pound = 16 ounces
Let's make the set up to convert 330 grains to ounces as:
![330grains(\frac{1pound}{7000grains})(\frac{16ounces}{1pound})](https://tex.z-dn.net/?f=330grains%28%5Cfrac%7B1pound%7D%7B7000grains%7D%29%28%5Cfrac%7B16ounces%7D%7B1pound%7D%29)
= 0.75 ounces
So, the weight of 330 grains of arrow in ounces is 0.75.
Colligative properties are usually used in relation to solutions.
Colligative properties are those properties of solutions, which depend on the concentration of the solutes [molecules, ions, etc.] in the solutions and not on the chemical nature of those chemical species. Examples of colligative properties include: vapour pressure depression, boiling point elevation, osmotic pressure, freezing point depression, etc.
For the question given above, the correct option is D. This is because the statement is talking about freezing point elevation, which is not part of colligative properties.
Since water does not have charged particles, water is a non-conductor. When some solutes dissolve in water they allow an electric current to flow through the water and the solution conducts electricity. These solutes are called electrolytes. ... Non-electrolytes like sugar dissolve to form molecules in solution.