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PtichkaEL [24]
3 years ago
11

An isolated insulated cylinder contains 15.40 grams of neon gas and a 62.30-gram bronze medal in thermal contact. When the bronz

e medal was put into the cylinder, its temperature was 72.30°C. The final temperature of both the medal and the neon gas is 66.30°C. Neon’s specific heat capacity is 1.047 joules/gram degree Celsius, and bronze’s specific heat capacity is 0.3770 joules/gram degree Celsius. What was the initial temperature of the neon? Type the correct answer in the box. Use numerals instead of words. Express your answer to the correct number of significant figures. The initial temperature of the neon gas was °C.
Chemistry
1 answer:
Katen [24]3 years ago
5 0

Answer:

its 57.56

Explanation:

dont ask me how it is just is trust me

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40.34*10^23/6.22*10^23=6.48 or 6.5
6.5*2=13 gram
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If the length, width, and height of a box are 10.00 cm, 7.25 cm and 3.00 cm, respectively, what is the volume of the box in unit
Blizzard [7]

<u>Answer:</u>

<u>For a:</u> The volume of the box is 217.5 mL

<u>For b:</u> The volume of the box is 0.2175 L

<u>Explanation:</u>

The box is a type of cuboid.

To calculate the volume of cuboid, we use the equation:

V=lbh

where,

V = volume of cuboid

l = length of cuboid = 10.00 cm

b = breadth of cuboid = 7.25 cm

h = height of cuboid = 3.00 cm

Putting values in above equation, we get:

V=10.00\times 7.25\times 3.00=217.5cm^3

  • <u>For a:</u>

To convert the volume of cuboid into milliliters, we use the conversion factor:

1mL=1cm^3

So,

\Rightarrow 217.5cm^3\times (\frac{1mL}{1cm^3})\\\\\Rightarrow 217.5mL

Hence, the volume of the box is 217.5 mL

  • <u>For b:</u>

To convert the volume of cuboid into liters, we use the conversion factor:

1L=1000cm^3

So,

\Rightarrow 217.5cm^3\times (\frac{1L}{1000cm^3})\\\\\Rightarrow 0.2175L

Hence, the volume of the box is 0.2175 L

3 0
4 years ago
A 4.80g piece of magnesium (Mg) displaces 2.76mL of water when it is placed in a graduated cylinder. What is the density of magn
AnnZ [28]

Answer:

<h2>1.74 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{4.80}{2.76}  \\  = 1.73913...

We have the final answer as

<h3>1.74 g/mL</h3>

Hope this helps you

8 0
3 years ago
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