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Harlamova29_29 [7]
3 years ago
7

hey i got a question for science its " you throw a rock with a mass of 3.6 kg. the ball leaves your hand with a speed of 10 m/s

DO NOT INCLUDE J IN THE ANSWER​
Chemistry
1 answer:
ANTONII [103]3 years ago
7 0

it is 3.9 i know tgis because you throw a rock with a mass of 3.6 kg. the ball leaves your hand with a speed of 10

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A solution is prepared by mixing 93.0 mL of 5.00 M HCl and 37.0 mL of 8.00 M HNO3. Water is then added until the final volume is
Charra [1.4K]

Answer:

[H^{+}] = 0.761 \frac{mol}{L}

[OH^{-}]=1.33X10^{-14}\frac{mol}{L}

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Explanation:

HCl and HNO₃ both dissociate completely in water. A simple method is to determine the number of moles of proton from both these acids and dividing it by the total volume of solution.

n_{H^{+} } from HCl = [HCl](\frac{mol}{L}). V_{HCl}(L)  \\ n_{H^{+} } from HNO_{3}  = [HNO_{3}](\frac{mol}{L}). V_{HNO_{3}}(L)

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K_{w} = [H^{+} ][OH^{-} ]

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[OH^{-}]=\frac{1.01X10-^{-14}}{0.761 }

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The pH of the solution can be measured by the following formula:

pH = -log[H^{+} ]

pH = -log(0.761)

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