Chemistry, 12.07.2019 03:20 deaerionharper

2al(s)+fe2o3(s)−→−heatal2o3(s)+2fe( l) 2al(s)+fe2o3(s)→heatal2o3(s)+2fe(l) if 26.1 kg al26.1 kg al reacts with an excess of fe2o3,fe2o3, how many kilograms of al2o3al2o3 will be produced?

Answers: 3

Show answers

Answers

Answer from: hjkrueger29

Answer : The mass of Al_2O_3 produced will be, 49.32 Kg

Explanation : Given,

Mass of = 26.1 Kg = 26100 g

Molar mass of = 26.98 g/mole

Molar mass of Al_2O_3 = 32 g/mole

First we have to calculate the moles of .

$\text{Moles of }Al=\frac{\text{Mass of }Al}{\text{Molar mass of }Al}=\frac{26100g}{26.98g/mole}=967.38moles$

Now we have to calculate the moles of Al_2O_3 .

The balanced chemical reaction is,

$2Al+Fe_2O_3\rightarrow Heat+Al_2O_3+2Fe$

From the balanced reaction we conclude that

As, 2 moles of react to give 1 mole of Al_2O_3

So, 967.38 moles of react to give $\frac{967.38}{2}=483.69$ moles of Al_2O_3

Now we have to calculate the mass of Al_2O_3 .

$\text{Mass of }Al_2O_3=\text{Moles of }Al_2O_3\times \text{Molar mass of }Al_2O_3$

$\text{Mass of }Al_2O_3=(483.69mole)\times (101.96g/mole)=49317.0324g=49.32Kg$

Therefore, the mass of Al_2O_3 produced will be, 49.32 Kg

2al(s)+fe2o3(s)−→−heatal2o3(s)+2fe(l) 2al(s)+fe2o3(s)→heatal2o3(s)+2fe(l) if 26.1 kg al26.1 kg al re

Answer from: Quest

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different. let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones). now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first. for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours. so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia.

Answer from: Quest

Idon’t know what the answer is i wish i could