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enyata [817]
3 years ago
7

A theory is a ___.

Chemistry
1 answer:
Dimas [21]3 years ago
7 0

The answer is either A or C. Sorry I'm not much help :)

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Can you guys help me with this one part?
Pani-rosa [81]

Answer: Do want the experiment done or help of the experiment

3 0
3 years ago
Read 2 more answers
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of
Natasha2012 [34]

When carbon reacts with oxygen it forms CO2. This can depicted by the below equation.

C + O2→ CO2

It has been mentioned that when 14.4 g of C reacts with 53.9 g of O2, then 15.5 g of O2 remains unreacted. <u>This indicates that Carbon is the limiting reagent and hence the amount of CO2 produced is based on the amount of Carbon burnt.</u>

C + O2→ CO2

In the above equation , 1 mole of carbon reacts with 1 mole of O2 to produce 1 mole of CO2.

In this case 14.4 g of Carbon reacts with 53.9 of O2 to produce "x"g of CO2.

<u>No of moles = mass of the substance÷molar mass of the substance</u>

No of moles of carbon = 14.4 /12= 1.2 moles

No of moles of O2 = Mass of reacted O2/Molar mass of O2.

No of moles of O2 = (Total mass of O2 burned - Mass of unreacted O2)/32

No of moles of O2 = (53.9-15.5) ÷ 32 = 1.2 moles.

Hence as already discussed 1 mole of Carbon reacts with 1 mole of O2 to produce 1 mole of CO2. In this case 1.2 moles of carbon reacts with 1.2 moles of O2 to produce 1.2 moles of CO2.

Moles of carbon dioxide = Mass of CO2 produced /Molar mass of CO2

Mass of CO2 produced(x) = Moles of CO2 ×Molar mass of CO2

Mass of CO2 produced(x) = 1.2 x 44 = 52.8 g

<u>Thus 52.8 g of CO2 is produced.</u>

5 0
3 years ago
Which is a natural cause of soil erosion? a.deforestationb.overgrazingc.agricultured.moving watere.construction
ss7ja [257]
Answer choice "A. Defrostration " is the only "natural" cause of soil erosion 
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3 years ago
A volcano erupts sending lava down its side the lava destroys the forest below which sphere is being impacted negatively? And wh
iogann1982 [59]

Answer:

Biosphere

Explanation:

This is because the biosphere is the category of life. This means that plants, animals, humans, and bacteria are all apart of the biosphere.

3 0
2 years ago
Convert these to formulas:
Ilia_Sergeevich [38]
In the order listed above;
NaF
PCl5
CaCO3
Mg(OH)2
N2O4
FeCl3
IF3
Ca(HCO3)2
(NH4)2S
Cu(OAc)2
H2O
Al2O3
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