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HACTEHA [7]
3 years ago
6

A alkaline earth metal is an element is groups 3-12 of the periodic table true or false?

Chemistry
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0

False Alkaline earth metals is group 2

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If only one-fourth the amount of brown sugar in the recipe were used, how much brown sugar would be used?
melomori [17]
3/4 or 4/4 would be the answer because if you use 1/4 out of 4/4 you would either have an answer of 3/4, 4/4 or 1. The 1 because 4/4 is equal to 1. 
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Consider the following system at equilibrium where H° = -87.9 kJ, and Kc = 83.3, at 500 K. PCl3(g) + Cl2(g) PCl5(g) When 0.17 mo
BigorU [14]

Answer:

K remains the same;

Q < K;

The reaction must run in the forward direction to reestablish the equilibrium;

The concentration of PCl_3 will decrease.

Explanation:

In this problem, we're adding an excess of a reactant, chlorine gas, to a system that is already at equilibrium. According to the principle of Le Chatelier, when a system at equilibrium is disturbed, the equilibrium shifts toward the side of the equilibrium that minimizes the disturbance.

Since we'll have an excess of chlorine, the system will try to reduce that excess by shifting the equilibrium to the right. Therefore, the reaction must run in the forward direction to reestablish the equilibrium.

The value of K remains the same, as it's only temperature-dependent, while the value of Q will be lower than K, that is, Q < K, as Q < K is the case when reaction proceeds to the right.

As a result, since PCl_3 is also a reactant, its concentration will decrease.

8 0
3 years ago
What is molarity???????
velikii [3]
Molarity is a term that applies to the amount of Moles of solute, per each litre of the solution. 
4 0
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A bird could be both a consumer and a producer
Ilia_Sergeevich [38]
False, only Consumers.
4 0
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A runner stood at the 100-meter mark on a track. When the timer started, the runner sprinted north to the 200-meter mark. It too
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Answer:

8 m/s north

Explanation:

3 0
3 years ago
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