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Lena [83]
3 years ago
5

Hi friends!!!!!!!!!!!​

Chemistry
2 answers:
vodka [1.7K]3 years ago
6 0

Answer:

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Anna11 [10]3 years ago
5 0

Answer:

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What mass of propane could burn in 48.0 g of oxygen? C3H8 + 5O2 → 3CO2 + 4H2O
Ipatiy [6.2K]

Answer:

Mass = 13.23 g  

Explanation:

Given data:

Mass of oxygen = 48.0 g

Mass of propane burn = ?

Solution:

Chemical equation:

C₃H₈ + 5O₂     →      3CO₂ + 4H₂O

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 48.0 g/ 32 g/mol

Number of moles = 1.5 mol

now we will compare the moles of propane and oxygen.

              O₂           :          C₃H₈

               5            :            1

             1.5            :          1/5×1.5 = 0.3 mol

Mass of propane burn:

Mass = number of moles × molar mass

Mass = 0.3 mol × 44.1 g/mol

Mass = 13.23 g  

6 0
3 years ago
Which item has the least thermal energy?
Archy [21]
The answer is cold water because the water is cold and it’s not using thermal energy
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Which element could likely substitute for Si in a solid solution?
yulyashka [42]

Answer:aluminum

Explanation:aluminum is a precious metal which means that it can be changed into a liquid solid or gas

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The acceleration of a runner who accelerates from 0 m/s to 3 m/s in 12s
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4 m/s^2


I hope this helps! 
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Which method of measurement can assess the speed of an electric motor?
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Answer:d

Explanation:

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