Liquids flow and take the shape of their containers.
<span>The more electronegative atom is reduced.</span>
Answer:
1. Scientists use experimentation and careful observation to collect evidence to support those explanations. Although there is no single scientific method, all types of scientists use the eight science and engineering practices in different orders and combinations to do their work.
2. In simplest terms, a law predicts what happens while a theory proposes why. A theory will never grow up into a law, though the development of one often triggers progress on the other
3.Data is just data and has no intrinsic meaning on its own. Evidence has to be evidence for or of something; an argument, an opinion, a viewpoint or a hypothesis. The evidence you use depends on your argument.
4.All models have limitations because they are not representative of every possible scenario. They use current knowledge and scientific data, but as those are subject to change, the models based off that knowledge and data are subject to change as well. ... Scientific models are not a replacement for experimentation.
5.What makes a good scientific question is that it can be answered by direct observations or with scientific tools. Examples of questions that are not scientific are based on values or opinions like what people believe is right or wrong, or beautiful or ugly. (to the part that says ANSWER ---->) Scientific ideas change over time as our evidence improves. The more experiments we do and the more data we collect, the better our scientific ideas become. ... When a brand-new idea is suggested, the first step is to collect evidence. But even when that evidence is collected, understanding it can be difficult.
Answer:
<h2>
Part A:</h2>
Molar mass of Al = 26.98 g/mol
mass of Al = 33.0 g
we have below equation to be used:
number of mol of Al,
n = mass of Al/molar mass of Al
=(33.0 g)/(26.98 g/mol)
<u>= 1.223 mol</u>
<h2><u>
Part B</u>
</h2>
Molar mass of Cl2 = 70.9 g/mol
mass of Cl2 = 38.0 g
we have below equation to be used:
number of mol of Cl2,
n = mass of Cl2/molar mass of Cl2
=(38.0 g)/(70.9 g/mol)
<h3>= 0.536 mol</h3>
<u />
Part B
we have the Balanced chemical equation as:
2 Al + 3 Cl2 ---> 2 AlCl3
2 mol of Al reacts with 3 mol of Cl2
for 1.2231 mol of Al, 1.8347 mol of Cl2 is required
But we have 0.536 mol of Cl2
so, Cl2 is limiting reagent
we will use Cl2 in further calculation
Molar mass of AlCl3 = 1*MM(Al) + 3*MM(Cl)
= 1*26.98 + 3*35.45
= 133.33 g/mol
From balanced chemical reaction, we see that
when 3 mol of Cl2 reacts, 2 mol of AlCl3 is formed
mol of AlCl3 formed = (2/3)* moles of Cl2
= (2/3)*0.536
<h2><u>
= 0.3573 mol</u></h2>
