nail polish remover float
Answer: B) 12.5
Explanation: I looked REALLY REALLY close
(It hurt my eyes but whatever)
Answer:
( About ) 2.42 pH
Explanation:
First convert grams to mole of the hydrochloric acid,
HCl ( moles ) = 0.7g * ( 1 mole / 36.5g ),
0.7 / 36.5 = ( About ) 0.0192 moles
Now take the moles as a fraction over the given liters, to determine " M, " the apparent pH
M = 0.0192 mole / 5.0 L,
M = 0.00384M
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Because HCl is a strong acid and will completely ionized, take a look at the steps below,
[ H+ ] = 0.00384M pH = -log[H+] = - log[0.00384],
- log[0.00384] = - ( - 2.41566... )
Solution = ( About ) 2.42 pH
1670 km/h; 40 200 km/day
<em>a) Velocity in kilometers per hour</em>
The conversion factors are 1 km/1000 m, 60 s/1 min, and 60 min/1 h.
We can string these together to get
Velocity = (465 m/1 s) x (1 km/1000 m) x (60s/1min) x (60 min/1 h)
= 1674 km/h
= 1670 km/h (three significant figures)
<em>b) Velocity in kilometers per day
</em>
The conversion factor is 24 h/1 day.
Velocity = (1674 km/1 h) x (24 h/1 day) = 40 200 km/day
Average velocity (v) of an object is equal to its final velocity (v) plus initial velocity (u), divided by two. Where: ¯v = average velocity.
Hope this helps :)
And could i please have brainliest