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babymother [125]
3 years ago
15

How do you know anything?

Chemistry
1 answer:
r-ruslan [8.4K]3 years ago
6 0
By studying and learning by using your brain to accomplish new goals. :)
(if that makes sense)
Hope this helps :3
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WILL GIVE BRAINLIEST
Sav [38]

Answer:

the answer is A

Explanation:

5 0
3 years ago
How many moles of carbon dioxide gas should be produced when 10.0 g of C2H6 are combusted at STP?
Finger [1]

Answer:

                    0.665 moles of CO₂

Explanation:

                     The balance chemical equation for the combustion of Ethane is as follow:

                            2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Step 1: <u>Calculate moles of C₂H₆ as;</u>

                              Moles  =  Mass  /  M.Mass

Putting values,

                              Moles  =  10.0 g / 30.07 g/mol

                              Moles  =  0.3325 moles

Step 2: <u>Calculate Moles of CO₂ as;</u>

According to balance chemical equation,

                    2 moles of C₂H₆ produced  =  4 moles of CO₂

So,

             0.3325 moles of C₂H₆ will produce  =  X moles of CO₂

Solving for X,

                      X  =  0.3325 mol × 4 mol ÷ 2 mol

                      X = 0.665 moles of CO₂

3 0
3 years ago
Both Sydney, Australia and Guangzhou, China are on the East coasts of continents in the Pacific Ocean. Why are their yearly temp
cestrela7 [59]

Answer:

All of the above

Explanation:

(I'm assuming you meant to put Australia in the options)

Australia is in the southern hemisphere and has its summer in December etc. and Winter in July etc.

China is in the northern hemisphere and has its summer in July etc and Winter in December etc.

6 0
3 years ago
Which of the following statements about metalloids is true?
Klio2033 [76]
Metalloids had properties that fall between those of metals and nonmetals (I believe that to be correct-.-)
7 0
3 years ago
Read 2 more answers
What are the three key things in science?
stiv31 [10]

Answer:

The three key things in Science are:

Physical Science,Earth Science and Life Science

If the answer helps you PLEASE mark me as brainliest

Stay Safe,Stay Healthy and Stay Happy

5 0
3 years ago
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