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Sav [38]
3 years ago
5

A 100 kg block of wood was nearly cut into two smaller pieces what is the total mass of all the smaller pieces put together

Chemistry
1 answer:
DiKsa [7]3 years ago
5 0
50kg seems like the right answer 100/2 is 50
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How many moles of sulfur<br> dioxide are in 2.26 x 10^33 sulfur dioxide molecules?
LUCKY_DIMON [66]

Answer:

moles = no. of molecules / Avogadro's number

         = 2.26 x 10^33 / 6.022 x 10^23

         = 3752906011

Round to significant figures which is 3 = 3.75 x 10^9 mol

Explanation: The formula for finding how many moles of a substance when given the amount of molecules is: moles = number of molecules / Avogadro's number

6 0
3 years ago
What mass of carbon dioxide is formed when 1.75 mol of ethane burns completely in oxygen?
dybincka [34]

Answer:

There is a mass of 154 Grams of Carbon Dioxide.

Explanation:

One mole is equal to 6.02 × 10^23 particles.

This means we have 1.05 X 10^24 total particles of Ethane.

Each ethane particle contains 2 carbon atoms.

If every particle of ethane is burned, we will end up with 2.10 x 10^24 molecules of Carbon Dioxide (Particles of Methane x 2, since each Methane particle contains 2 carbon atoms)

Carbon Dioxide has a molar mass of 44.01 g/mol

So if we take our amount of Carbon Dioxide molecules and divide it by 1 mole, ((2.10 x 10^24)/(6.02 x 10^23) = 3.49) we find that we have 3.49 moles of Carbon Dioxide.

Now all we need to do is multiply our moles of carbon dioxide(3.49) by it's molar mass(44.01) while accounting for significant digits.

What you should end up with is 154 Grams of Carbon Dioxide.

Hope this helps (And more importantly I hope I didn't make any errors in my math lol)

As a side note this is all assuming that this takes place at STP conditions.

3 0
3 years ago
Which of the following explains this observation?
NikAS [45]
It would be C i’m pretty sure
6 0
2 years ago
5. The reaction of magnesium oxide with hydrochloric acid carried out in a calorimeter caused the
saul85 [17]

Answer:

kek w

Explanation:

kek w

5 0
2 years ago
Creating nuclear energy produces large amounts of radioactive waste.
Montano1993 [528]
Ummmm this one is hard but i guess it would be t?????

7 0
2 years ago
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