Car D
Because it is the heaviest. Kinetic energy is directly proportional to the velocity and mass of the object. All the cars have the same velocity. But Car D has the most mass. So, it has most kinetic energy, because more the mass more the energy.
Answer:
1)New substance
2)Exothermic reaction(reaction which releases heat or light to the environment)
3)donate
4)buffers
5)salt(base)
6)NAOH
7)neutralisation reaction
8)It decreases
9)It is neutral
neutrons have a neutral charge
Answer:
Ok so I dont have a paper on me, but to solve this, first you need to know, 1 ml is 1 cubic centimeter, okay so we need to find the volume, which is 4/3 times pie times r cubed, the answer to this equation will then bet 51 cubic centimeters which directly translate to 51 ml pushed out of the full cup
<h3>
![\tt C.~Ka=\dfrac{[H^+][CN^-]}{[HCN]}](https://tex.z-dn.net/?f=%5Ctt%20C.~Ka%3D%5Cdfrac%7B%5BH%5E%2B%5D%5BCN%5E-%5D%7D%7B%5BHCN%5D%7D)
</h3><h3>Further explanation </h3>
According to Arrhenius, acids are substances which, when dissolved in water, release Hions.
An HₓY acid in water will ionize:
HₓY (aq) ⇒ xH⁺ (aq) + Yˣ- (aq)
In general, the weak acid ionization reaction
HA (aq) ⇒ H⁺ (aq) + A⁻ (aq)
Ka's value
![\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}](https://tex.z-dn.net/?f=%5Clarge%20%7B%5Cboxed%20%7B%5Cbold%20%7BKa%20%5C%3A%20%3D%20%5C%3A%20%5Cfrac%20%7B%5BH%20%5E%20%2B%5D%20%5BA%20%5E%20-%5D%7D%20%7B%5BHA%5D%7D%7D%7D%7D)
So for HCN
HCN(aq)⇒H⁺(aq)+CN⁻(aq)
![\tt Ka=\dfrac{[H^+][CN^-]}{[HCN]}](https://tex.z-dn.net/?f=%5Ctt%20Ka%3D%5Cdfrac%7B%5BH%5E%2B%5D%5BCN%5E-%5D%7D%7B%5BHCN%5D%7D)
