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juin [17]
3 years ago
12

please help due in 1 hour. This is 7th grade science. & in return I’ll help you on something! 15 points

Chemistry
1 answer:
MA_775_DIABLO [31]3 years ago
8 0

Answer: MCCCMC

Please. Mark as brainliest

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Water is stored where until it is used by the cell
Vadim26 [7]

Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

Hope this helps :)

3 0
3 years ago
For the following reaction, 5.20 grams of propane (C3H8) are allowed to react with 22.5 grams of oxygen gas. propane (C3H8) (g)
Sliva [168]

Answer:

15.58g of CO₂ is the maximum amount that can be produced

Explanation:

The propane reacts with oxygen as follows:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

<em>Where 1 mole of propane reacts with 5 moles of oxygen</em>

To solve this question we need to find the moles of propane and oxygen to find limiting reactant using the chemical reaction:

<em>Moles propane -Molar mass: 44.1g/mol-:</em>

5.20g * (1mol / 44.1g) = 0.118 moles

<em>Moles oxygen -Molar mass: 32g/mol-:</em>

22.5g O₂ * (1mol / 32g) = 0.703 moles

For a complete reaction of 0.703 moles of oxygen are:

0.703 moles O₂ * (1mol C₃H₈ / 5mol O₂) = 0.141 moles of propane are necessaries. As there are just 0.118 moles of propane, <em>propane is limiting reactant.</em>

The moles of carbon dioxide that are produced are:

0.118 moles C₃H₈ * (3 moles CO₂ / 1 mol C₃H₈) = 0.354 moles CO₂

The maximum mass that can be produced is -Molar mass CO₂: 44.01g/mol-:

0.354 moles CO₂ * (44.01g / mol) =

15.58g of CO₂ is the maximum amount that can be produced

4 0
3 years ago
What is the mass of carbon in carbon dioxide
Gemiola [76]

Answer: 27.27%

Mass percentage of carbon in carbon dioxide is 4412×100=27. 27%.

3 0
4 years ago
Explain how storm surges can affect human life in Florida.
Blizzard [7]
As a result of high winds and water from a storm surge, homes, businesses, and crops may be destroyed or damaged, public infrastructure may also be compromised, and people may suffer injuries or loss of life.
5 0
3 years ago
Carbon disulfide burns in oxygen to yield car- bon dioxide and sulfur dioxide according to the chemical equation cs2(l) 3 o2(g)
vampirchik [111]

Answer: Oxygen is the limiting reagent.

Explanation: CS_2(l)+3O_2(g)\rightarrow CO_2(g)+2SO_2(g)

As can be seen from the given balanced equation:

3 moles of O_2 reacts with 1 mole of CS_2

1.52 moles of O_2 reacts with=\frac{1}{3}\times 1.52=0.51moles of CS_2

Thus O_2 is the limiting reagent as it limits the formation of products. (0.91-0.51)= 0.40 moles of CS_2 will remain as such and thus  CS_2 is an excess reagent.

6 0
3 years ago
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