Red cabbage juice is a pH indicator.
<span>D) Contradictory observations are found.
Science doesn't care if the public agrees with it. Facts don't rely on opinion</span>
Answer:
1
Explanation:
Oxygen is a pure substance therefore it is only made up of one kind of atom
Answer:
0.683 moles of the gas are required
Explanation:
Avogadro's law relates the moles of a gas with its volume. The volume of a gas is directely proportional to its moles when temperature and pressure of the gas remains constant. The law is:
V₁n₂ = V₂n₁
<em>Where V is volume and n are moles of 1, initial state and 2, final state of the gas.</em>
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Computing the values of the problem:
1.50Ln₂ = 5L*0.205mol
n₂ = 0.683 moles of the gas are required
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