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3 years ago

5

How many grams of zinc sulfide are used to produce 1.28 grams of zinc oxide?

1 answer:

Lostsunrise [7]3 years ago

6 0

Answer:

0.012288122055459

Explanation:

i might be wrong

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What conclusion can be drawn about the heat of vaporization of ethanol from the heating curve? A) The potential energy of the et

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Explanation:

During the phase change represented by the heat of fusion the temperature does not change. The molecules in the liquid state has a higher degree of freedom but are stabilized by the strong hydrogen bonding requiring a larger into of energy to separate the molecules than the heat of fusion.

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You leave for school late when you are pulled over by a police officer for speeding. He clocks you at 52 mi/hr . What is your sp

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Answer:

Explanation:

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4 years ago

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3 years ago

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A solution has a pH of 2.5. what is the H+

romanna [79]

<u>Answer: </u>The concentration of $H^+$ in the solution is $3.16\times 10^{-3}M$

<u>Explanation:</u>

pH is defined as the negative logarithm of hydrogen ion concentration present in the solution.

$pH=-\log [H^+]$ .....(1)

We are given:

pH of solution = 2.5

Putting values in equation 1, we get:

$2.5=-\log [H^+]$

$[H^+]=10^{-2.5}$

$[H^+]=3.16\times 10^{-3}M$

Hence, the concentration of $H^+$ in the solution is $3.16\times 10^{-3}M$

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3 years ago