3 years ago

Explain how you could calculate the acceleration of an object

Chemistry

1 answer:

mr_godi [17]3 years ago

7 0

Acceleration = final velocity - initial velocity/time

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What kind of heat is it when you cook an egg in a frying pan?

USPshnik [31]

I may be totally wrong but I’ll make a guess to it being thermodynamics.

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3 years ago

If 840. mL of linseed oil has a mass of 700. g, calculate the density of linseed oil.

aleksklad [387]

Density can be determined as:

d = m /V

whereas, m is mass of compound

v is volume

d = 700 /840 = 0.83 g /mL

Thus density is 0.83 g /mL

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4 years ago

A chunk of tin weighing 18.5 grams and originally at 97.38 °C is dropped into an insulated cup containing 75.7 grams of water at

balandron [24]

Answer:

The final temperature of the water is 22.44°C.

Explanation:

Heat lost by tin will be equal to heat gained by the water

$-q_1=q_2$

Mass of tin = $m_1=18.5 g$

Specific heat capacity of tin = $c_1=0.21 J/g^oC$

Initial temperature of the tin = $T_1=97.38^oC$

Final temperature = $T_2$ =T

$q_1=m_1c_1\times (T-T_1)$

Mass of water= $m_2=75.7 g$

Specific heat capacity of water= $c_2=4.184 J/g^oC$

Initial temperature of the water = $T_3=21.52^oC$

Final temperature of water = $T_2$ =T

$q_2=m_2c_2\times (T-T_3)$

$-q_1=q_2$ (Law of Conservation of energy)

$-(m_1\times c_1\times (T-T_1))=m_2\times c_2\times (T-T_3)$

On substituting all values:

$-(18.5 g\times 0.21 J/g^oC\times (T-97.38^oC))=75.7 g\times 4.184 J/g^oC\times (T-21.52 ^oC)$

we get, T = 22.44°C

The final temperature of the water is 22.44°C.

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3 years ago

Some chemical reactions releases energy other store energy what important chemical reaction storage energy?

olganol [36]

Answer:

A chemical reaction that stores energy is called an endothermic reaction. More energy might be released as products form than the energy needed to break the reactants apart. This chemical reaction will release energy. In other words, it will be an exothermic reaction.

Explanation:

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3 years ago

Read 2 more answers

Complete the sentence using the word distance, elevation, or relief. Scientists use mean sea level to make sure they have a stan

alexandr402 [8]

Answer:

ELEVATION

Explanation:

4 0

3 years ago