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3 years ago

Why science can answer some questions, but not others

2 answers:

8 0

Because other question being happen to any heavenly body is they still did not examine and they still have no proof to answer about it.

Makovka662 [10]3 years ago

5 0

Cause its not all about science

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Which element do you expect to be most like magnesium? Why?

Volgvan

I know its calcium, just not 100% sure why.

5 0

3 years ago

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

Express 68000 kg in scientific notation

JulsSmile [24]

6.8x10^4
Would be the answer in scientific notation

7 0

3 years ago

Two reasons why scientists create models to study atoms

zaharov [31]

Models are used to study atoms because we can't exactly study an atom with the naked eye, Using an enlarged model of an atom easier to study because we can pin point the different characteristics of the atom.

6 0

3 years ago

What is the difference between the physical and the life sciences?<br> at least 1 sentence pls

hram777 [196]

Answer:

Physical science is concerned with the study of natural, non living objects and life science is about living things.

Explanation:

I had fun answering this question.

5 0

4 years ago

Read 2 more answers