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3 years ago

In a car, the energy in gasoline is burned to create heat energy, which is converted to energy

Chemistry

2 answers:

elixir [45]3 years ago

8 0

<span>chemical is converted into mechanical energy.</span>

frutty [35]3 years ago

3 0

Answer:

The first is chemical energy and the second is mechanical energy

Explanation

when gasoline burns some of the chemical energy in gasoline will convert to heat energy. The heat turns into mechanical energy which in turn koves the car.

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What mass of solid that has a molar mass 89.0 g/mol should be added to 100.0 g of benzene to raise the boiling point of benzene

taurus [48]

On the basis of given data:

Mass of solvent (benzene) = 100 gm or 0.1 Kg

Molar mass of solute (solid) = 89 g/mol

Increase in boiling point (deltaTb) = 2.42 degree C

The boiling point elevation constant k = 2.53 C.kg/mol

There is a need to determine the mass of the solid to be added, the elevation in boiling point is proportional to the m (molality) of the solute;

ΔTb = k.m

Here, m that is molality = moles of solute/kg of solvent

Therefore,

ΔTb = k (benzene) × moles of solid/kg of benzene

2.42 = 2.53 × moles of solid/0.1

moles of solid = 0.0956 moles

The molar mass of solid = 89 g/mol

Thus, the mass of solid = 0.0956 moles × 89 g/mol

= 8.508 g

Thus, the mass of solid to be added is 8.508 g.

3 0

2 years ago

If a plant cell was an office building what were the chloroplasts be? (and why?)

Ierofanga [76]

This would be the coffee machine in the break room. Because the chloroplast creates energy from the sun. and this creates energy from coffee beans to give to the employees

7 0

3 years ago

which structures are found in eukaryotic cells a.chloroplast b. membrane bound organelles c. mitochondria d. nucleus e. pili

olasank [31]

Is it asking for multiple answers?
If not the nucleus is one organelle found in the <span>eukaryotic.
Hope This Helps :)</span>

4 0

2 years ago

Read 2 more answers

The table shows the volumes of different samples of liquid? Which sample has the greatest DENSITY.

arlik [135]

Answer:

Maybe B

Explanation:

4 0

3 years ago

Read 2 more answers

Calculate the amount of copper (in moles) in a 45.2 g pure copper sheet

tangare [24]

Answer:

0.712 mol

Explanation:

The easiest way to do this is to use a proportion.

1 mol of copper = 63.5 grams (check this using your periodic table).

x mol of copper = 45.2 grams

1/x = 63.5 / 45.2 Cross multiply

63.5 x = 1 * 45.2 Divide by 63.5

x = 45.2/63.5

x = 0.712 mol Answer to 3 sig digs

8 0

3 years ago

In a car, the ________ energy in gasoline is burned to create heat energy, which is converted to ________energy

In a car, the energy in gasoline is burned to create heat energy, which is converted to energy