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miv72 [106K]
3 years ago
14

If there was an airplane that went 2,000 miles in 3.5 hours. Find the average speed

Chemistry
1 answer:
jenyasd209 [6]3 years ago
3 0

Answer:

<h3>The answer is 571.43 mi/hr</h3>

Explanation:

The average speed in the question can be found by using the formula

v =  \frac{d}{t}  \\

where

d is the distance

t is the time taken

We have

v =  \frac{2000}{3.5}  \\  = 571.428571...

We have the final answer as

<h3>571.43 mi/hr</h3>

Hope this helps you

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For each solution, determine the p-values for each ion indicated. A solution that is 0.493 M in NaCl and 0.314 M in NH 4 Cl .
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Complete Question:

Ions to calculate the p-values: Na⁺, Cl⁻, and NH₄⁺

Answer:

pNa = 0.307

pCl = 0.093

pNH₄ = 0.503

Explanation:

The p-value is calculated by the antilog of the concentration of the substance of interest. For example, pH = -log[H⁺]. Thus, first, let's find the ions concentration.

Both substances are salts that solubilize completely, thus, by the solution reactions:

NaCl → Na⁺ + Cl⁻

NH₄Cl → NH₄⁺ + Cl⁻

So, for both reactions the stoichiometry is 1:1:1 and the concentration of the ions is equal to the concentration of the salts.

[Na⁺] = 0.493 M

[Cl⁻] = 0.493 + 0.314 = 0.807 M

[NH₄⁺] = 0.314 M

The p-values are:

pNa = -log[Na⁺] = -log(0.493) = 0.307

pCl = -log[Cl⁻] = -log(0.807) = 0.093

pNH₄ = -log[NH₄⁺] = -log(0.314) = 0.503

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Which statement is true about compounds? They do not form living things. They do not form nonliving things. They are formed when
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Answer:

The true statement is:

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Explanation:

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Atoms of different elements combine with each other to attain stable electronic configuration.

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2) By exchanging electrons

When they share electrons with each other, they form a covalent bond.

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