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Charra [1.4K]
3 years ago
7

What is the molarity of a solution containing 18.2 g of KCl in 215 mL of KCl solution?

Chemistry
1 answer:
bulgar [2K]3 years ago
3 0

Answer:

The sum would be 69109.4944 ml if that's what you were asking

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What is the net force acting on a golf car travelling at constant speed of 5 mph
Brilliant_brown [7]
The answer is 0 Newtons

This is because of a key word in the question: “constant”

When we say something has a constant speed, that means that its acceleration is 0.

Using the equation derived for Newton’s 2nd law, we see that F=ma

Force = mass x acceleration

If acceleration, a, equals 0, then when we multiply our mass times acceleration 0

F=m(0)

Anything times zero equals zero

So, F=0

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3 years ago
A source emits a sound and is represented by the red dot in this map. Four people are located around the source, and the circles
Monica [59]

Explanation:

A source Emits a sound and is represented by the red dot in this map. Four people are located and the source and the circle represent the sound wave.

As the source moves west which person hears the highest pitch

person B

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3 years ago
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Why is a measured amount of water needed to determine the specific heat of a metal object?
shutvik [7]
This  is  because  absorbed  heat  energy or  released  by  water  is dependent on  mass of  water.
q=mc delta  T
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4 0
3 years ago
did the data support Martha's hypothesis? Use evidence to explain why or why not. if you feel the data were inconclusive, explai
levacccp [35]

Answer:

Yes, the data supports the researchers hypothesis.

Explanation:

From the given data, in all the cases except the fanning event in females, the fish parents which was fed full ration appeared.

Take for example, 30.7 mouthing events in males given full ration as opposed to 24.5 events when they were fed on half ration.

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3 years ago
Os subníveis mais energéticos de um dado átomo são: ...4s2 3d10 4p5 a) indique o seu número atomico b) quantos electrões de valê
givi [52]

Answer:

A. 35

B. 7

C. halogênios

Explanation:

Aqui, para responder a essa pergunta, precisaremos conhecer o elemento particular em questão.

..... 4s ^ 2 3d ^ 10 4p ^ 5 significa que está a cinco elétrons da configuração eletrônica do último elemento na primeira camada dos metais pesados.

O último elemento da 1ª série do elemento de transição é o zinco, portanto, como está a apenas 5 elementos de distância, o átomo de que estamos falando é o átomo de Bromo de Bromo.

A. O zinco tem um número atômico 30 e como o bromo está a 5 elementos de distância, seu número atômico é 35

B. Uma vez que pertence ao grupo halogênio, tem 7 elétrons de valência como o resto da família

C. Pertence à família dos halogênios

7 0
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