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3 years ago

What is the relationship between the developed land and the brightness temperature

Chemistry

1 answer:

barxatty [35]3 years ago

7 0

Answer:

The Luminosity of a star depends on BOTH its temperature and its radius (surface area): L is proportional to R2 T4. A hotter star is more luminous than a cooler one of the same radius. A bigger star is more luminous than a smaller one of the same temperature.

Explanation:

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6.45 g of C6H12O6 is burned in a bomb calorimeter containing 950. g of water and the temperature goes from 35.0∘C to 42.3∘C. If

emmasim [6.3K]

Answer:

$q_{rxn}=-488.86\frac{kJ}{mol}$

Explanation:

Hello!

In this case, since this calorimetry problems can by analyzed by figuring out that the heat lost due to the combustion of C6H12O6 is gained by the water and the calorimeter which undergo the mentioned temperature rise, we can write:

$Q_{rxn}=-(m_wC_w+C_c)(T_2-T_1)$

Thus, by plugging in the given data, we obtain:

$Q_{rxn}=-(950.0g*4.184\frac{J}{g\°C} +933\frac{J}{\°C})(42.3\°C-35.0\°C)\\\\Q_{rxn}=-17.5kJ$

Next, we compute the moles of C6H12O6 by using its molar mass (180.18 g/mol) as shown below:

$n=6.45g*\frac{1mol}{180.18g} =0.0358mol$

Thus, the value for q of the reaction turns out:

$q_{rxn}=\frac{Q_{rxn}}{n} \\\\q_{rxn}=\frac{17.5kJ}{0.0358mol} \\\\q_{rxn}=-488.86\frac{kJ}{mol}$

Best regards!

8 0

3 years ago

Read 2 more answers

In reading a line drawing, how do you know where atoms of these elements are in the structure if they are missing from the drawi

Tanya [424]

Answer:

The atoms of an element are represented in a chemical line drawing with its chemical formula.

Explanation:

chemical structural drawing helps to represent the pattern for which an element is formed. Chemical elements are made up of atoms that represent their single state.

The line drawing is made up of lines (representing the chemical bond between atoms) and the atoms or various atoms that make up the element.

7 0

3 years ago

Who is responsible for proposing an influential model of working memory featuring a three-part system that allows individuals to

olga55 [171]

Answer:

The person in charge is: "Alan Baddeley."

Explanation:

Hope this helps!!!

Please mark as brainliest:)

8 0

3 years ago

What causes objects to speed up, slow down, and change directions?

vlada-n [284]

The answer is force

sorry if i’m wrong

4 0

4 years ago

Which type of circuit has a string of lights and one light goes out but the others stay lit

kondor19780726 [428]

Answer:parrallel

Explanation:

8 0

3 years ago