Number 2 is 4 states they are condensation freezing melting and evaporation
Answer:
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Explanation:
Answer:
A
Explanation:
The correct answer would be that<u> the group being given the sugar pill is being used as the control group.</u>
In a typical experimental study, there are two groups of subjects:
1. The treatment or the experimental group
2. The control group
<em>The treatment group receives the treatment variable while the control group does not receive or is given a placebo. Thus, the control group act as the reference group for comparison basis. Any difference in the observation between the two groups would be attributed to the treatment variable.</em>
The correct option is, therefore, A.
(a) <u>7.32 moles of N₂</u>
(b) = 5.72 moles of NO
(c) 0.460 moles of O₂
Explanation:
We begin by balancing the chemical reaction involved;
N₂ + 0₂ → 2NO
The number in front of the elements or compounds indicate the mole ration involved in the reaction. One (1) mole of N2 and one (1) mole of O2 react to form two (2) moles of NO.
(a) Because the mole ratio between O₂ and N₂ is 1 : 1 then <u>7.32 moles of N₂</u> are needed to react with 7.32 mol of O₂
(b) Because the ration of N₂ and NO in the chemical equation is 1 : 2, then (2.86 * 2) moles of NO can be formed when 2.86 mol of N₂ reacts.
= 5.72 moles of NO
(c) (b) Because the ration of O₂ and NO in the chemical equation is 1 : 2, then (0.230 * 2) moles of O₂ must react to produce 0.230 mol of NO.
= 0.460 moles of O₂