Answer:
Explanation:
Método
Apoie uma seringa de gás com um suporte, saliência e grampo.
Usando um cilindro medidor, adicionar 50 cm3 de ácido clorídrico diluído a um frasco cônico.
Adicione 0,4 g de carbonato de cálcio ao frasco. Conecte imediatamente a seringa de gás e inicie um cronômetro.
A cada 10 segundos, registre o volume de gás produzido.
Quando a reação estiver completa, limpe o aparelho conforme orientação de um professor.
Repita as etapas 1 a 5 com diferentes concentrações de ácido clorídrico.
<h2><em>
isso ajuda a comentar se / se não</em></h2>
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Answer:
12
Explanation:
23-11, why?, because, the difference between atomic and mass number is the neutron number which most a times is equivalent to the electron number.
<u>Answer:</u>
<em>We know water can exist in all three states be it solid or liquid or gas the only difference between the three states is the temperature at which they exist. </em>
<u>Explanation:</u>
When the temperature moves towards colder region the state of water changes to solid while when the temperature moves to water region the state of water changes to gas.
This little experiment can be done with the help of ice at room temperature. The more ice is applied to water it will turn to ice but removal of eyes in room temperature. And will make it turn to water and complete removal of eyes with application of heat would make it into vapour.
Answer:
See explanation
Explanation:
The question is incomplete, however, I found an example of this question on another site, so, I'm going to explain to you how to do it basing on this example, and then, apply it in your case. In the picture 1, is the example, and picture 2 is the solution.
Now, this type of reaction is known as the "<em>Williamson Ether synthesis"</em><em> </em>and the overall of this, is a reaction that involves an alkoxyde ion with an primary alkyl halide like this:
RO- + R'X ------> ROR' + X-
This is a Sn2 reaction, and it's really fast.
Following the example in picture 1, the result is in picture 2. Hope this can help you.