2 years ago

Difference betwifference between a mixture or compound

1 answer:

7 0

The difference between a mixture and a compound is that a mixture can be easily separated like a salad where you can pick things out and a compounds you are usually not able to undo

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When the following equation is balanced, the coefficient of water is

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Helium decays to form lithium. Which equation correctly describes this decay?

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⁴He₂ → ⁴Li₃ + ⁰e₋₁.

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Helium decays with the release of an electron to form a lithium nucleus.

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Calculate the pH of a solution with an H+ ion concentration of 9.36 x 10-3 M ?

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The answer is 2.03

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The pH of a solution can be found by using the formula

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$pH = - log(9.36 \times {10}^{ - 3} ) \\ = 2.02872415...$

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2 years ago

How many moles are 21.67 L of NH4CI?<br> Type your answer...

NNADVOKAT [17]

Answer:

0.967mole

Explanation:

Given parameters:

Volume of NH₄Cl = 21.67L

Unknown:

Number of moles = ?

Solution:

We assume that the volume was taken at standard temperature and pressure,

Then;

Number of moles = $\frac{volume }{22.4L}$

Number of moles = $\frac{21.67}{22.4}$ = 0.967mole

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2 years ago