The correct steps in lighting a Bunsen burner would be as follows: First, clean the area. Get rid of any flammable substances near the burner. Second, close the air supply Third, turn on the gas supply to the burner. Fourth, use a lighter to light the flame. Fifth, adjust the flow of air to control the flame.
Answer:
These two images are pictures of the moon. The first one is the moon is in the third quarter. And the second picture is of the moon in the first quarter.
Explanation:
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(brainliest please, if possible)
Answer:
C
Explanation:
A year is a complete revolution around the Earth
Answer:
e. oxygen is a reactant in combustion and pure oxygen increases the reactant concentration
Explanation:
The reaction of a burning match is combustion. In this combustion, the organic components of the match (such as cellulose, C₆H₁₀O₅) react with oxygen, producing water and carbon dioxide:
- C₆H₁₀O₅(s) + 6O₂(g) → 5H₂O(g) + 6CO₂(g)
Seeing as oxygen is a reactant and not a catalyst nor product, and that nitrogen plays no part in the reaction, <em>the only correct answer is option e</em>.