How many moles of iron, Fe, are produced with 156.1 grams of magnesium, Mg?

b. 4.28mol Fe

Explanation:

The chemical equation in this question is given as follows:

3Mg + Fe2O3 → 2Fe + 3MgO

According to the equation;

3 moles of Mg produces 2 moles of Fe

Molar Mass of Mg = 24.31g/mol

Mole = mass/molar mass

Mole = 156.1/24.31 = 6.42mol

If 3 moles of Mg produces 2 moles of Fe

6.42 moles of My will produce 6.42 × 2/3

= 12.84/3

= 4.28mol of Fe.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)