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Vlad1618 [11]
3 years ago
5

The lower the percent of energy required for a machine to perform work, the more energy efficient it is. Please select the best

answer from the choices provided T F
Chemistry
2 answers:
natita [175]3 years ago
5 0

Answer:

True

Explanation: just took the test

Anvisha [2.4K]3 years ago
3 0
Hey You!

The Correct Answer Is: True.

I Really Hope This Helped You, Good Luck With Your Studies! =)
You might be interested in
Repeated trials and replication are the same thing. <br><br> - True<br> - False
Sauron [17]

Answer:

false

Explanation:

get a good grade :)

4 0
3 years ago
How many grams C3H7OH can be made by reacting with 7.3L of CO2 at STP
Komok [63]

Answer:

6.54g of C3H7OH

Explanation:

Step 1:

Determination of the number of mole of CO2 that occupy 7.3L at stp.

This can be obtained as follow:

1 mole of a gas occupy 22.4L at stp.

Therefore, Xmol of CO2 will occupy 7.3L at stp i.e

Xmol of CO2 = 7.3/22.4

Xmol of CO2 = 0.326 mole.

Therefore, 0.326 mole of CO2 was used in the reaction.

Step 2:

The balanced equation for the reaction. This is given below:

6CO2 + 8H2O —> 2C3H7OH + 9O2

Step 3:

Determination of the number of mole of C3H7OH produced from the reaction. This is illustrated below:

From the balanced equation above,

6 moles of CO2 reacted to produce 2 moles of C3H7OH.

Therefore, 0.326 mole of CO2 will react to produce = (0.326 x 2)/6 = 0.109 mole of C3H7OH.

Step 4:

Conversion of 0.109 mole of C3H7OH to grams. This is illustrated below:

Number of mole of C3H7OH = 0.109 mole.

Molar mass of C3H7OH = (12x3)+ (7x1) + 16 + 1 = 60g/mol

Mass of C3H7OH =..?

Mass = mole x molar mass

Mass of C3H7OH = 0.109 x 60

Mass of C3H7OH = 6.54g.

Therefore, 6.54g of C3H7OH is produced from the reaction.

5 0
3 years ago
What is the answer? Please
Mazyrski [523]

Answer:

snail should be at the top

Explanation:

7 0
3 years ago
Draw a Lewis structure for C2H3Cl . Include all hydrogen atoms and show all unshared electron pairs. None of the atoms bears a f
Korvikt [17]

Answer:

See attached picture.

Explanation:

Hello!

In this case, since C2H3Cl is an organic compound we need a central C-C parent chain to which the three hydrogen atoms and one chlorine atom provides the electrons to get all the octets except for H as given on the statement.

In such a way, on the attached picture you can find the required Lewis dot structure without formal charges and with all the unshared electron pairs, considering there is a double bond binding the central carbon atoms in order to compete their octets.

Best regards!

5 0
3 years ago
Imagine that it is a sunny day and you are looking at a building that has solar panels on the roof. Which of the following state
harkovskaia [24]

Answer:

||~~~~~~~~~~~~~Hello~~~~~~~~~~~~~~||

Your answer should be:

B. The panels are absorbing a lot of light energy.

Explanation:

Hope this helped!

<em>Brainliest would be appreciated!</em>

<h2><em>Have a blessed day! :D</em></h2>
8 0
3 years ago
Read 2 more answers
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