Answer:
C
Explanation:
since the dehydrogenation reacts n produces a c=C w a bond that is doubled lol
The mass (in grams) of the silicon present in the computer chip is 2.19 g
From Avogadro's hypothesis,
6.02×10²³ atoms = 1 mole of Si
But
1 mole of Si = 28 g
Thus, we can say that:
6.02×10²³ atoms = 28 g of Si
- With the above information, we can obtain the mass of silicon, Si present in the computer chip. This can be obtained:
6.02×10²³ atoms = 28 g of Si
Therefore,
4.71×10²² atoms = (4.71×10²² × 28) / 6.02×10²³ g of Si
4.71×10²² atoms = 2.19 g of Si
Thus, the mass of silicon, Si present in the computer chip is 2.19 g
Learn more on Avogadro's number: brainly.com/question/25811549
Answer:
1.25 M HCO₃⁻ / 1.25 M CO₃²⁻
Explanation:
Buffer capacity refers to the amount of a strong acid or base required per liter of the buffer to change its pH by one. This amount is directly related to the concentration of the conjugate acid-base pair in the buffer since the buffer pair neutralizes the strong acid or base.
Thus, the highest buffer capacity is found in the solution that has the highest concentration of the conjugate acid-base pair, which is 1.25 M HCO₃⁻ / 1.25 M CO₃²⁻
.