Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite. SiO2 +3C SiC + 2CO If 2 moles of SiO2 react with 5 moles of C, what is the limiting reactant?

Answer : The limiting reactant is, carbon (C)

Explanation : Given,

Moles of = 2 moles

Moles of C = 5 moles

Now we have to calculate the limiting and excess reagent.

The given balanced chemical reaction is:

From the balanced reaction we conclude that

As, 3 mole of react with 1 mole of

So, 5 moles of react with moles of

From this we conclude that, is an excess reagent because the given moles are greater than the required moles and is a limiting reagent and it limits the formation of product.

Thus, the limiting reactant is, carbon (C)

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

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.