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3 years ago

During _____________ there are 24 hours of daylight at the North Pole.

Chemistry

1 answer:

Tresset [83]3 years ago

8 0

Answer:

summer

The North Pole stays in full sunlight all day long throughout the entire summer (unless there are clouds)

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How much heat does a 100. g sample of copper absorb when its temperature increases by 30.0°C? The specific heat of copper is 0.3

erica [24]

Answer:

$\boxed {\boxed {\sf B. \ 1170 \ Joules }}$

Explanation:

We are asked to find how much heat a sample of copper absorbs when the temperature is increased.

Since we know the mass, temperature increase, and specific heat capacity, we can use the following formula to calculate heat.

$q= mc \Delta T$

The mass of the copper sample is 100 grams, the temperature is changed or increased by 30.0 degrees Celsius, and the specific heat of copper is 0.39 Joules per gram degrees Celsius.

m= 100 g
c= 0.39 J/g °C
ΔT= 30.0 °C

Substitute the values into the formula.

$q= (100 \ g )(0.39 \ J/g \textdegree C ) (30.0 \textdegree C )$

Multiply the first two values. Note that the units of grams cancel.

$q= 39 \ J/ \textdegree C (30.0 \textdegree C )$

Multiply again, this time the units of degrees Celsius cancel.

$q= 1170 \ J$

The copper sample absorbs 1170 Joules of heat and Choice B is correct.

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3 years ago

Which sub-layer thins out into space, where there is no air

KengaRu [80]

The "exosphere" is the most distant and tenuous "layer" of our atmosphere.

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3 years ago

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What is the partial pressure of C? atm C

s344n2d4d5 [400]

The partial pressure of carbon is 45 mm Hg.

Explanation:

The partial pressure of carbon dioxide is referred as the amount of carbon dioxide present in venous or arterial blood. It acts as a ventilation in the lungs.
There is a formula for measuring partial pressure . As we know total pressure means summation of the pressure of all the gases included .
To find partial pressure we need- total pressure* fraction of mole of that gas. The partial pressure of CO2 is more because it carries deoxygenated blood from the whole body towards the lungs.

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3 years ago

Acid precipitation is an agent of_______ weathering

Snowcat [4.5K]

Chemical weathering

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Indicate the number of unpaired electrons for following: [noble gas]ns2np5

Fantom [35]

1 unpaired electron.

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3 years ago