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sineoko [7]
3 years ago
5

the determination of a chemical formula n this experiment, you will use the law of definite proportions to find the chemical for

mula for ahydrated compound containing copper, chlorine, and water molecules locked in the crystal structure of the solid compound. The general formula for the compound is CuxCly•zH2O, and its name is copper chloride hydrate. The letters x, y, and z represent integers that will establish the proper chemical formula for this substance. First, you will gently heat a sample
Chemistry
1 answer:
victus00 [196]3 years ago
7 0

Answer: Strictly a laboratory analysis and can only be done using the data obtained during analysis

Explanation:

To find a solution to this problem, you need to use the data collected during the lab work. A guide could be finding the possible forms of hydrated copper chlorides in reference books. Since it's also a lab work, you can definitely compare your data with lab mates.

The formula CuxCly.zH₂O and its name chloride hydrate already gives you an idea of the possibilities of the value of the integers, hence you can take a good guess for the identity of the unknown salt and calculate the theoretical formular weight for it. From the that you can proceed to also find the mass of water and copper from your lab analysis.  

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How many moles of CaO will be produced from 23.9 g of Ca?<br>2Ca(s) + O2(g) – 20:0(3)<br>mol​
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Answer:

0.6 moles of CaO will produced.

Explanation:

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Number of moles of calcium:

Number of moles = mass/ molar mass

Number of moles = 23.9 g / 40 g/mol

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Now we will compare the moles of calcium and CaO.

            Ca         :          CaO

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            0.6         :        0.6

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NItrogen in air reacts at high temperature to form NO2 according to the reaction:
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Answer:

The correct answer is option E.

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