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Serjik [45]
3 years ago
10

You decided you want to make spaghetti for supper. You first light the gas stove because you need to cook the meat. When the mea

t is cooked, you add sauce to it. Then you put a pot of water on the stove to get it boiling. The next step is putting the spaghetti noodles in to boil. Finally, you drain the spaghetti noodles and add the sauce. Which of the following describes the chemical changes happening?
A Cooking the meat and boiling the water are both chemical changes.
B Lighting the stove and cooking the meat are both chemical changes.
C Light the stove with a match and boiling the noodles are both chemical changes.
D Mixing the pasta sauce with the meat and boiling the noodles are both chemical changes.
Chemistry
2 answers:
zloy xaker [14]3 years ago
7 0

Answer:

C

Explanation:

Brainliest

777dan777 [17]3 years ago
6 0
C Light the stove with a match and boiling the noodles are both chemical changes
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Answer : The amount of oxygen gas collected are, 0.217 mol

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Using ideal gas equation :

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T = temperature of gas = 14^oC=273+14=287K

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Now put all the given values in the ideal gas equation, we get:

(1.02atm)\times (5L)=n\times (0.0821L.atm/mol.K)\times (287K)

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It is important to record your data with all the decimals provided by the instruments even if they are zero because it increases the accuracy of the measurement.

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