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2 years ago

For the following reaction: Fe2O3 + 3CO --> 2Fe + 3CO2 how many grams of Fe2O3 is needed to produce 111 g of Fe?

1 answer:

4 0

You need 158.70 grams of Fe2O3 to produce 111 grams of Fe. This is calculated by using the molar masses and stoichiometric relationship of the two compounds.

Solution:

MM Fe = 55.845 g/mol
MM Fe2O3 = 159.69 g/mol
Fe: Fe2O3 = 2 mol:1 mol

11 g FE (1 mol Fe/55.845 g Fe) (1 mol Fe2O3/2 mol Fe) (159.69 g Fe2O3 / 1 mole Fe2O3) = 158.70 grams Fe2O3

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What is the difference between an atone and a molecule

Step2247 [10]

Answer:

Explanation:

Molecules contain two or more atoms and are held together by covalent bonds, whereas compounds are held together by ionic bonds. Two or more elements bonded together through ionic attraction. ... The atoms within a compound also must be different from each other, whereas a molecule can consist of only one element

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2 years ago

use the reaction that occours when magnesium burns in oxygen to show how a reaction might be included in more than one category

Schach [20]

2Mg+O₂⇒2MgO
It can be a combustion reaction, or it can be a combination reaction

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2 years ago

A chemist mixes 96.2 g of chloroform with 31.2 g of acetone and 98.1 g of acetyl bromide. Calculate the percent by mass of each

stiv31 [10]

Answer:

42.6 % CHCl₃, 13.83 % C₃H₆O and 43.5 % CH₃COBr

Explanation:

This is a solution with 3 compounds:

96.2 g of CHCl₃

31.2 g of C₃H₆O

98.1 g of CH₃COBr

Total mass of solution is : 96.2g + 31.2 g + 98.1g = 225.5 g

Percent by mass is, the mass of the compounds in 100 g of solution

Let's prepare the rule of three

225.5 g of solution have ____ 96.2 g ___ 31.2 g _____98.1 g

100 g of solution would have ____

(100 . 96.2) / 225.5 = 42.6

(100 . 31.2) / 225.5 = 13.83

(100 . 98.1) / 225.5 = 43.5

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2 years ago

the element silver has an atomic mass of 108 u and consists of two stable isotopes silver-107 and silver-109.

DochEvi [55]

Silver-109 has a mass of 109 amu. It is one of the isotopes of the silver atm.

<h3>What are isotopes?</h3>

The term isotopes has to do with the atoms of the same element that has the same atomic number but different mass numbers. This implies that the isotopes that we have do have the same number of protons but they do not have the same number of neutrons and the fact that they differ in the number of neutrons implies that would have the same chemical property.

We can see from the question that there are two isotopes of silver and tehse isotopes of silver have been identified as silver-107 and silver-109. The isotopes do have the same mass and not the same number of protons.

The percentage abundance of the two isotopes are not the same which means that one is more than the other. We can now see that the mass of the silver 109 in amu is 109 amu.

Learn more about atomic mass:brainly.com/question/5661976

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7 0

1 year ago

What would be the volume of mercury sample that has a mass of 52.757 g? The density of mercury is 12.5g / mL .

frozen [14]

Answer:

Explanation:

Divide the mass by the density and the units of grams will cancel so youll end up with mL.

(52.757g)/(12.5g/mL) = 4.2mL

5 0

2 years ago