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2 years ago

3) During the day at 27°C a cylinder with a sliding top contains 20.0 liters

Chemistry

1 answer:

tatiyna2 years ago

4 0

Answer:

$T_2=12\°C$

Explanation:

Hello there!

In this case, according to the Charles' law equation which help us to understand the directly proportional relationship between volume and temperature:

$\frac{T_2}{V_2}=\frac{T_1}{V_1}$

Thus, by solving for the final temperature, T2, and making sure we use the temperatures in Kelvin, we can calculate the final temperature as shown below:

$T_2=\frac{T_1V_2}{V_1} \\\\T_2=\frac{(27+273)K*19L}{20.0L}\\\\T_2=285-273\\\\T_2=12\°C$

Best regards!

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What is the blocks average speed nearest hundredth of a m/s

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The question is incomplete, the complete question is;

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Answer:

0.36 m/s to the hundredth place

Explanation:

Now let us remember the definition of speed. Speed is defined in physics as distance/time.

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2 years ago

What is the molarity (M) of .5 liter of a solution that has 205 g of NaCl dissolved in it?

jeka94

Answer:

<h2>Molarity = 7 mol / L</h2>

Explanation:

Since the mass of NaCl and it's volume has been given we can find the molarity by using the formula

<h3> $C = \frac{m}{M \times v}$ </h3>

where

C is the molarity

m is the mass

M is the molar mass

v is the volume

From the question

v = 0.5 L

m = 205 g

We must first find the molar mass and then substitute the values into the above formula

M( Na) = 23 , M( Cl) = 35.5

Molar mass of NaCl = 23 + 35.5 =

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So the molarity of NaCl is

$C = \frac{205}{0.5 \times 58.5} \\ C = \frac{205}{29.25}$

C = 7.00854

We have the final answer as

<h3>Molarity = 7 mol / L</h3>

Hope this helps you

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3 years ago

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photoshop1234 [79]

Answer:

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