Graphite and diamond are allotropes of carbon. Allotrophy is the existence of an element in more than one form but the same physical state. Carbon is an example of element that exhibits allotrophy; these are diamond and graphite; which differ in structure and chemical properties. Another element that exhibits allotrophy is sulfur; with monoclinic and rhombic sulfur.
Answer:
- <u>Find out the concentraion of the acetic acid, calculate the number of moles, which is equal to the number of moles of baking soda, and then multiply by the molar mass of baking soda to convert to mass in grams.</u>
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Explanation:
You need the concentration of the <em>acetic acid.</em>
With the concentration you can find the number of moles of acid in the given 100mL of acetic acid solution.
- # of moles = molar concentration × number of liters of solution
By stoichiometry of the reaction, you determine the number of moles of <em>baking soda</em>:
CH₃COOH(aq) + NaHCO₃(aq) → CH₃COONa(aq) + CO₂(g) + H₂O(aq)
↑ ↑ ↑
<em>acetic acid baking soda gas</em>
From that balanced molecular equation, you find that 1 mole of acetic acid react with 1 mole of baking soda.
Then, using the molar mass of bakind soda, you convert the number of moles into mass in grams:
- mass in grams = number of moles × molar mass.
Then, adding that mass of baking soda, may be a little excess to be sure, all the acetic acid would be consumed getting the <em>largest amount of gas possible.</em>
Answer:
They Are All Very Good Statements But I Will Go With "A"
Explanation:
I go with "A" Because In The statement it has a cause an effect, it has a positive term and a negative term, in other uses it is "A" between energy inputs and outputs, and events.
Answer:
Option D.
Explanation:
Some of the alpha particles Rutherford shot at the gold foil bounced back, some scattered; but the majority of them went right through. That meant there had to be some sort of positively charged subatomic particle in there that pulled them through, but it had to be at the center and couldn't take up a lot of room.
Kinetic energy=Ek
Ek=(1/2)mv²
Ek=480 J
v=8 m/s
mass=?
Ek=(1/2)mv²
480 J=(1/2)m(8 m/s)²
480 J=(32 m²/s²) m
m=(480 J)/(32 m²/s²)=15 kg
answer: the mass of the object is 15 kilograms.