Can two organisms belong to the same family but different classes? Explain.

1 answer:

7 0

This information is correct. This is because the order of classification is domain, kingdom, phylum, class, order, family, genus, species. Since class comes before family, the two organisms could be in the same class, but then when you specify further, they could be in different families.

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2A1 (s) + 3C12 (g) --> 2AlCl3 (s) (balanced)

Dennis_Churaev [7]

Answer:

32.3%

Explanation:

Percent yield is defined as:

Actual yield (125.5g) / Theoretical Yield * 100

To find theoretical yield we have to find the moles of aluminium. As 2 moles of Al produce 2 moles of AlCl3, the moles of Al = Moles AlCl3.

With these moles we can find the mass assuming a 100% of yield (Theoretical Yield) as follows:

Moles Al = Moles AlCl3 (Molar mass Al = 26.98g/mol)

72g Al * (1mol / 26.98g) = 2.67 moles AlCl3

Mass AlCl3 (Molar mass: 133.34g/mol)

2.67 moles AlCl3 * (133.34g / mol) = 355.8g AlCl3

Percent Yield = 125.5g / 355.8g * 100 =

5 0

3 years ago

What is the perecentage yield of a reaction in which 200g PCl3 reacts with excess water to form 128g HCl according to the f.F re

castortr0y [4]

Answer:

The percentage yield is 80.36% (see calculations in attachment).

Explanation:

The theoretical yield of the reaction is the amount of product that would result if all the limiting reagent reacted. The theoretical yield is calculated using the balanced equation.

In practice, the actual yield, or the amount of product actually obtained from a reaction, is almost always less than the theoretical yield.

To determine how efficient this reaction is, we need to calculate the percent yield, which describes the proportion of the actual yield to the theoretical yield. It is calculated as follows:

$%yield = actual yield ÷ theoretical yield × 100%$