Taking into account the definition of avogadro's number, 3.37×10⁻⁷ moles of methane are 20.32×10¹⁶ molecules.
First of all, you have to know that Avogadro's number indicates the number of particles of a substance (usually atoms or molecules) that are in a mole.
Its value is 6.023×10²³ particles per mole and it applies to any substance.
Then you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of methane, then 20.32×10¹⁶ molecules are contained in how many moles of methane?
amount of moles of methane= (20.32×10¹⁶ molecules × 1 mole)÷ 6.023×10²³ atoms
Solving:
<u><em>amount of moles of methane= 3.37×10⁻⁷ moles</em></u>
Finally, 3.37×10⁻⁷ moles of methane are 20.32×10¹⁶ molecules.
Learn more about Avogadro's Number:
D. this is the correct answer because the question is showing a comparison of sizes rather than the actual sizes which eliminates B. A and C have no relevance.
Bi (Bismuth), will have the strongest metallic character, as it is the last element in group 15.
Answer : The correct option is, solution deviate positively from.
Explanation:
According to the Rouault's law, there are two types of deviation which are negative deviation and positive deviation.
In negative deviation, the A-A interactions and B-B interactions are weaker than the A-B interactions that means A-B interactions are more due hydrogen bonding.
For example : chloroform & acetone form a non-ideal solution. The volume of solution will always be more.
In positive deviation, the A-A interactions and B-B interactions are stronger than the A-B interactions.
For example : acetone & benzene form a non-ideal solution. The volume of solution will always be less.
As per question, the interaction between individual liquids are stronger than the solution of two liquid's interactions. That means, the solution deviate positively from.
Hence, the correct option is, solution deviate positively from.
Answer:
Independent: The amount of vinegar
Dependent: The dye result on the egg
Controlled: The type of eggs, the size of jars, the dye tablet, how much she stirs, etc.
Explanation:
The independent variable is what is being changed, which in this case, is the amount of vinegar being added to each jar. The dependent variable is what is being measured or observed. Kesha is looking for what happens to the egg when she adds more vinegar with the dye. Lastly, there could be a couple of controlled variables. Like, the dye tablet, the size and brand of the eggs, the types of jars, how long she stirs each egg, and so on. The controlled are just variables kept constant so that any result observed is because of one singular change, the independent variable.