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3 years ago

What’s the definition of renewable energy

Chemistry

2 answers:

Vesnalui [34]3 years ago

7 0

Explanation:

renewable energy is energy from a source that is not depleted when used such as wind or solar power.

Hope this helps :)

IceJOKER [234]3 years ago

3 0

Answer:

energy from a source that is not depleted when used, such as wind or solar power.

Explanation:

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How does gravity keep the planets in orbit around the sun

mrs_skeptik [129]

Hi there!

Gravity from the sun is even and makes a planet orbit the sun by exerting a force that pulls the planet towards it. Since the gravity of the sun is always the same (or very, very similar), the planet's orbit stays the same.

Hope this helps!

5 0

4 years ago

A researcher studying the nutritional value of a new candy places a 4.10 g sample of the candy inside a bomb calorimeter and com

Ierofanga [76]

<h3>Answer:</h3>

5.078 Cal/g

<h3>Explanation:</h3>

We are given;

Mass of the sample of candy as 4.10 g

Change in temperature, °C = 2.1 °C

Heat capacity of the calorimeter, C = 41.50 kJ/K

We are required to calculate the nutritional Calories per gram of candy

Since the Candy sample was burnt

Then the heat lost by the candy is equivalent to the heat absorbed by the calorimeter.

Therefore, we need to calculate the heat energy absorbed by the calorimeter.

Quantity of heat = Heat capacity × Change in temperature

Q = C×Δt

Q = 41.50 kJ/K × 2.1 K

= 87.15 kJ

Therefore;

The heat released by 4.10 g of candy is 87.15 kJ

Calories per gram = Heat energy ÷ mass of candy

But; 1 kJ = 4.186 Calories

Therefore;

Number of calories = 87.15 kJ ÷ 4.186 Claories/kJ

= 20.82 Calories

Hence, calories per gram = 20.83 Cal ÷ 4.10 g

= 5.078 Cal per g

= 5.078 Cal/g

Thus, the nutritional Calories per gram of candy is 5.078 Cal/g

3 0

3 years ago

Ann drove to the store km north of her house and then drove to the library, which is 5 km south of the store. She drove a total

Vadim26 [7]

Answer : The question is incomplete, the complete question is attached in answer

To calculate the displacement by Ann's driving from north of her house to south;

we have the data as

In north - 10 km
in south - 5 km
total - 15 km

So we can calculate the displacement, which will be,

10 - 5 = 5 km.

Hence, the displacement will be 5 km

3 0

3 years ago

Which of the following contains an atom that does not obey the octet rule? BrF3 SiO2 NaCl BrF

mrs_skeptik [129]

The octet rule signifies towards the capability of the atoms to prefer to exhibit eight electrons in the valence shell. In case, when the atoms possess lesser than eight electrons, they seem to react and produce more stable components. While discussing octet rule, one does not consider d or f electrons.

According to the octet rule, the atoms of the prime-group elements seem to bind in such a manner that each atom exhibit eight electrons in its valence shell, providing it the similar electronic configuration as a noble gas.

In the given question, in BrF3, fluorine follows octet rule, while bromine does not follow the octet rule.

5 0

3 years ago

Read 2 more answers

Like Earth, the moon

dedylja [7]

Um all? i’m confused

5 0

3 years ago