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natita [175]
2 years ago
12

How many grams of CO2 are used when 6.50 g of O2 are produced?

Chemistry
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

Approximately 5.05 g of CO2 are used when 6.50 g of O2 are produced.

Explanation:

The answer to this question is the implication that the production of 6.5g of O2 requires 5g-6g CO2, since it is 63% oxygen by mass and 37% carbon dioxide by mass (not including water vapor). This would mean that 4g-5g CO2 productions could be expected to yield 2.25 or so grams oxygen for each gram CO2 produced, depending on how low the temperature was at which the reaction took place (a product like dry ice produces only cold enough to use 1/16th its volume in volume rather than 1/200th).

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8 0
2 years ago
If you have 1.005 x 1024 molecules of Ca(OH)2 how many atoms do you have? Moles? Grams?
ira [324]

Answer:

  • 5.025x10²⁴ atoms
  • 1.6686 moles
  • 123.63 g

Explanation:

In one Ca(OH)₂ molecule, there are 5 atoms (1 Ca, 2 O and 2 H). This means that in 1.005x10²⁴ Ca(OH)₂ molecules, there are (5 * 1.005x10²⁴) 5.025x10²⁴ atoms.

To <u>convert molecules into moles</u>, we use <em>Avogadro's number</em>:

  • 1.005x10²⁴ molecules * \frac{1mol}{6.023*10^{23}molecules} = 1.6686 moles

Finally, we <u>convert moles into grams</u> using the <em>molar mass of Ca(OH)₂</em>:

  • 1.6686 moles * 74.093 g/mol = 123.63 g
4 0
3 years ago
Jada’s class grows an organic garden as part of a project. Students grow their garden for two months but find the plants are gro
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One benefit of this is that the weaknesses of some of their plans are covered by better plans. Another is that if the final plan doesn’t result, there are already many other ideas to go off of. A final benefit is that if the overall plan does work, it can still be easily improvised. Hope this helps! After all, this question is more opinion based.
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3 years ago
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Why is atp an example of chemical potential energy?
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Answer: ATP ( adenosine triphosphate) is considered as the energy currency of the cell as it stores energy in the cell. It is an example of chemical potential energy because energy is stored in the high energy containing phosphoanhydride bond (between phosphate molecules in the ATP).
7 0
3 years ago
4. Given the balanced equation: 2Na + S → Na₂S
PtichkaEL [24]

Answer:

Option D. 30 g

Explanation:

The balanced equation for the reaction is given below:

2Na + S —> Na₂S

Next, we shall determine the masses of Na and S that reacted from the balanced equation. This is can be obtained as:

Molar mass of Na = 23 g/mol

Mass of Na from the balanced equation = 2 × 23 = 46 g

Molar mass of S = 32 g/mol

Mass of S from the balanced equation = 1 × 32 = 32 g

SUMMARY:

From the balanced equation above,

46 g of Na reacted with 32 g of S.

Finally, we shall determine the mass sulphur, S needed to react with 43 g of sodium, Na. This can be obtained as follow:

From the balanced equation above,

46 g of Na reacted with 32 g of S.

Therefore, 43 g of Na will react with = (43 × 32)/46 = 30 g of S.

Thus, 30 g of S is needed for the reaction.

8 0
3 years ago
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