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Vilka [71]
4 years ago
14

What is one element in the same family as oxygen?

Chemistry
1 answer:
Lady bird [3.3K]4 years ago
7 0

Answer: sulfur, selenium, tellurium and polonium

Fact: The oxygen family is in group 16 of the perodic table.

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Consider the reaction 2 CO + O2 → 2 CO2 .What is the percent yield of carbon dioxide
Wewaii [24]

Answer:

Y=50.9\%

Explanation:

Hello,

In this case, given the reaction, we can directly compute the theoretically yielded grams of carbon dioxide, considering the 2:2 molar ratio between carbon monoxide (molar mass = 28 g/mol) and carbon dioxide (molar mass = 44 g/mol) and the initial reacting grams of carbon monoxide in excess oxygen:

m_{CO_2}^{theoretical}=10gCO*\frac{1molCO}{28gCO}*\frac{2molCO_2}{2molCO}*\frac{44gCO_2}{1molCO_2}   =15.7gCO_2

Thus, as only 8 g were actually yielded, we compute the percent yield:

Y=\frac{8g}{15.7g}*100\% \\\\Y=50.9\%

Best regards.

7 0
3 years ago
What is one disadvantage of using fossil fuels?
Elan Coil [88]

Answer:

Fossil fuels contribute to greenhouse gases, which is one of their major disadvantages. The most harmful for the environment is coal because it has many more harmful combustion products than other fossil fuels.

3 0
2 years ago
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How is the air in tube 4 kept out of contact with the nail​
klasskru [66]

Answer:

If you ever wonder why nails rust, it's because rusting happens when a metal is exposed to oxygen. The molecules of iron on the surface of the nail exchange atoms with the oxygen in the air and produce a new substance, the reddish-brown ferrous oxide, a.k.a. rust.

Explanation:

please mark this answer as brainliest

7 0
3 years ago
Draw the structures of the following covalent molecules.
zysi [14]

NHCl_2=Attachment 1

SiO_2=Attachment 2

SO_2=Attachment 3

BF_3=Attachment 4

CF_2H_2=Attachment 5

8 0
3 years ago
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A geologist is studying an area where stream erosion and deposition are the dominant surface processes. He notices that all of t
mixas84 [53]

Answer: A)

Explanation:

the deposition environment has changed from wind-dominated in the past to stream-dominated today.

7 0
3 years ago
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