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otez555 [7]
3 years ago
13

A balloon at 30.0°C has a volume of 222 mL. If the temperature is increased to 56.1°C and the pressure remains constant, what wi

ll the new volume be, in mL?
Chemistry
1 answer:
svp [43]3 years ago
7 0

Answer:

<em>415.15 mL</em>

Explanation:

To solve the statement, you can use the law of Charles - Gay Lussac, which states that "<em><u>the volume of gas is directly proportional to its temperature at constant pressure</u></em>." Mathematically:

\frac{V1}{T1} = \frac{V2}{T2} = Constant

You can calculate the volume V₂ Clearing it from the equation and replacing the values granted by the statement to perform the calculation:

V₂ = V₁ x T₂ / T₁ = 222 mL x 56.1 ° C / 30.0 ° C = 415.15 mL

Therefore, <em>the gas at 56.1 ° C will occupy a volume of 415.15 mL</em>

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Answer:

About 1.48 M.

Explanation:

The formula for molarity is mol/L.

So firstly, you must find the amount of moles in 250 grams of NaCl.

I do this by using stoichiometry. First, I find how nany grams are in a single mole of NaCl. This is around 58.44 grams/mole. Now that I know this, I can now use a stoich table. (250 g NaCl * 1 mol NaCl / 58.44 g NaCl). I plug this into my calculator.

I get that 250 grams of NaCl is equal to about 4.28 moles.

Now I just plug into the formula!

4.28 moles/2.9 L = about 1.48

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The most loosely held electrons in an atom are called
ELEN [110]
The most loosely held electrons in an atom are called valence electrons.
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3 years ago
A gas has a volume of 27.5 L at 302 K and 1.40 atm. How many moles are in the sample of gas?
Temka [501]

it may be C. did you get the right answer so you could study it?

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4 years ago
Problem PageQuestion Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with o
zlopas [31]

<u>Answer:</u> The amount of acetylene gas needed in the reaction is 2.00 moles

<u>Explanation:</u>

We are given:

Moles of water = 2.00 moles

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2C_2H_2+5O_2\rightarrow 4CO_2+2H_2O

By Stoichiometry of the reaction:

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So, 2.00 moles of water will be produced by = \frac{2}{2}\times 2.00=2.00mol of acetylene gas

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100 Points!
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Answer:

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