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3 years ago

HEEEEEEEEEEEEEEELLLLLLLLLLLLPPPPPPP!!!!!!! I WILL MARK BRAINLIEST IF YOU HELP!!!!THIS IS DUE SOON!

Chemistry

1 answer:

Hitman42 [59]3 years ago

3 0

Answer:

An ice pack uses friction and the chemicals inside make it mix to make it cold

Explanation:

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When people conserve electricity, power plants do not need to produce as much electricity because there is less demand for it.

almond37 [142]

True

Explanation:

When people conserve electricity, power plants do not need to produce as much electricity because there is less demand for it.

This very correct.

When electricity is used in a sustainable way, there is little of it consumed.
Switching off idle electronics would make that amount of electric current to be re-distributed to another place.
Less coal and fuel would be used and power plants do not need to produce as much electricity.
Most electricity produced in power plants are often wasted due to idle appliances consuming the bulk of them.
When these appliances are turned off, less energy is in demand and less will be produced.

learn more:

Conservation of resources brainly.com/question/8690489

#learnwithBrainly

5 0

3 years ago

a closed flask of air (0.250 L) contains 5.00 "puffs" of particles. The pressure probe on the flask reads 93 kPa. A student uses

Sergio039 [100]

Answer: New pressure inside the flask would be 148.8 kPa.

Explanation: The combined gas law equation is given by:

$PV=nRT$

As the flask is a closed flask, so the volume remains constant. Temperature is constant also.

So, the relation between pressure and number of moles becomes

$P=n\\or\\\frac{P}{n}=constant$

$\frac{P_1}{n_1}=\frac{P_2}{n_2}$

Initial conditions:

$P_1=93kPa\\n_1=5\text{ puffs}$

Final conditions: When additional 3 puffs of air is added

$P_2=?kPa\\n_2=8\text{ puffs}$

Putting the values, in above equation, we get

$\frac{93}{5}=\frac{P_2}{8}\\P_2=148.8kPa$

3 0

3 years ago

Physical properties can be observed

Alika [10]

Answer:

Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others. That is your answer! Thanks! :)

Explanation:

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3 years ago

Read 2 more answers

10. Which term is same for one mole of O2 and one mole of ethane C2H6

melamori03 [73]

Answer:

b) Number of molecules

Explanation:

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3 years ago

Samples of each of the following objects are removed from a 60º C water bath, in which they have been for enough time to reach t

Brut [27]

Answer:

concrete

2kj for second question

Explanation:

it's gotta be because... let me get back on it.

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3 years ago