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3 years ago

Describe one trait that you believe is unique to you that you think is

Chemistry

1 answer:

gladu [14]3 years ago

6 0

Answer:

Mom and dad have blue eyes but I have brown.

Explanation:

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A sample of propane (C3H8) has a mass of 0. 47 g. The sample is burned in a bomb calorimeter that has a mass of 1. 350 kg and a

Nady [450]

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

The specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat has been expressed as:

$q=mc\Delta T$

<h3 /><h3>Computation for the heat absorbed</h3>

The iron and calorimeter are in side the closed system. Thus, the energy released by the sample, has been equivalent to the energy absorbed by the calorimeter.

$q_{released}=q_{absorbed}\\
q_{released}=m_{calorimeter}\;c_{calorimeter}\;\Delta T$

The given mass of calorimeter has been, $m_{calorimeter}=1350\;\rm g$

The specific heat of the calorimeter has been, $c_{calorimeter}=5.82\;\rm J/g^\circ C$

The change in temperature of the calorimeter has been, $\Delta T=2.87^\circ \rm C$

Substituting the values for heat released:

$q_{released}= 1350\;\text g\;\times\;5.82\;\text J/\text g^\circ \text C\;\times\;2.87^\circ \text C\\
q_{released}=22,549.5\;\text J\\
q_{released}}=22.54\;\rm kJ$

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

6 0

3 years ago

What are some of the benefits of using measurements to find density? Provide 2 each. What are some of the challenges of using me

stellarik [79]

Some of the benefits of using measurements to find density include the following:

It is easy and doesn't require experiments.
The volume of both light and dense molecule can be gotten.

Some of the challenges of using measurements to find density include the following:

Inconsistency in the grind setting
Temperature changes not taken into account.

<h3>What is Density?</h3>

This is defined as the mass per unit volume of a substance or te degree of compactness of a substance and can be gotten with the use of measurements or experiments.

The measurement doesn't take the temperature changes into consideration which will lead to the result being most likely incorrect. It is also advantageous because less time is used thereby making it easier.

Read more about Density here brainly.com/question/406690

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7 0

2 years ago

Calculate the number of moles of sodium oxide that should be produced with 6.50 g of sodium react with oxygen gas

mars1129 [50]

First of all write a balanced equation.
4Na + O2 -> 2Na2O
You are starting with a mass of sodium. You need to use sodium’s molar mass. Take this quantity times mole to mole ratio between sodium and sodium oxide to get moles of sodium oxide produced.
.141 moles of sodium oxide produced

4 0

3 years ago

Get ready for the wave of screenshots :>

Reil [10]

Answer:

okay let me know when i can help, ill be happy too help

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3 years ago

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Someone help me what is the difference between alchemy and chemistry

ICE Princess25 [194]

Answer: