Answer:double displacement
Explanation:I just did it
Answer:
The answer is C
Explanation:
She should make the parachutes smaller in order to decrease the drag forces on the car and bring it to a stop 400 meters after crossing the finish line.
Explanation:
It is given that the total volume is (10 mL + 60 mL) = 70 mL.
Also, it is known that
= 
Where,
= total volume
= initial volume
Therefore, new concentration of
= 
= 
= 0.43 M
New concentration of NaOH = 
= 
= 0.14 M
So, the given reaction will be as follows.

Initial: 0.43 0.14 0
Change: -0.14 -0.14 0.14
Equilibrium: 0.29 0 0.14
As it is known that value of
= 4.74
Therefore, according to Henderson-Hasselbalch equation calculate the pH as follows.
pH = ![pK_{a} + log \frac{[CH_{3}COO^{-}]}{[CH_{3}COOH]}](https://tex.z-dn.net/?f=pK_%7Ba%7D%20%2B%20log%20%5Cfrac%7B%5BCH_%7B3%7DCOO%5E%7B-%7D%5D%7D%7B%5BCH_%7B3%7DCOOH%5D%7D)
= 
= 4.74 + (-0.316)
= 4.42
Therefore, we can conclude that the pH of given reaction is 4.42.
Answer:
the quiz grade so the first option
Explanation:
ur welcome
The correct answer is 2.20 × 10⁻²⁸ kg
Mass defect for oxygen-16 = 0.13261 amu
1 amu = 1.66 × 10⁻²⁷ kg
Converting amu to kg we get,
0.13261 amu ( 1.66 × 10⁻²⁷ kg / 1 amu ) = 2.20 × 10⁻²⁸ kg
Thus the mass defect for oxygen-16 in kilograms is 2.20 × 10⁻²⁸