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3 years ago

How are isotopes of an element different from one another?

Chemistry

2 answers:

DENIUS [597]3 years ago

6 0

Answer:

Isotopes of an element have the same atomic number but diffrent mass numbers because they have different numbers of neutrons.

Explanation:

Brainlest will always be appreciated. :)

Dvinal [7]3 years ago

4 0

isotopes have the same atomic number because they are the same element but have a different atomic mass because they contain a different number of neutrons.

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The specific heat of copper metal is 0. 385 J/(g °C). How much energy must be added to a 35. 0-gram sample of copper to change t

Rus_ich [418]

The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.

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 heat required to raise the temperature has been expressed as:

$\rm Heat=mass\;\times\;specific\;heat\;\times\;Change\;in\;temperature$

<h3>Computation for the heat energy required</h3>

The given specific heat of copper has been $\rm 0.385\;J/g^\circ C$

The mass of copper has been, $\rm 35\;g$

The initial temperature of copper has been, $\rm 20^\circ C$

The final temperature of copper has been, $\rm 65^\circ C$

The change in temperature has been, $\Delta T$

$\Delta T=\text{Final\;temperature-Initial\;temperature}\\\Delta T =65^\circ \text C-20^\circ \text C\\\Delta T=45^\circ \text C$

Substituting the values for the heat required as:

$\rm Heat=35\;g\;\times\;0.385\;J/g^\circ C\;\times\;45^\circ C\\Heat=606\;J$

The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

7 0

2 years ago

HELP! THIS IS A TIMED QUIZ!!

ivanzaharov [21]

Answer:

A) Age!! Its because even if the object was 1 year old or 100 years old, nothing about the impact would change. However, those other categories depict features that would definitely make an impact. For example as object that is big, fast, and hits at an angle perpendicular to whatever it is moving towards, the impact will be very lage. But if its the opposite and it was small and slow, then the impact crater would not be as large. Good luck on your quiz!!

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2 years ago

Is a free electron the same as an electron

Sliva [168]

I don’t know about this ‍♀️

4 0

3 years ago

Read 2 more answers

*click photo* <br><br> Tysm if you answer!

STALIN [3.7K]

Answer: False

Explanation: