A. Balance each of the following chemical equations. 1. Fe...

A. Balance each of the following chemical equations. 1. __ Fe + __ O2 ? __ Fe2O3 2. __ C2H4 + __ O2 ? __ CO2 + __ H2O 3. __ KOH + __ H3PO4 ? __ K3PO4 + __ H2O 4. __ NH3 + __ O2 ? __ NO + __ H2O 5. __ HClO4 + __ P4O10 ? __ H3PO4 + __ Cl2O7 6. __ S8 + __ O2 ? __ SO3 7. __ HNO3 + __ NaHCO3 ? __ NaNO3 + __ H2O + __ CO2 8. __ CO2 + __ H2O ? __ C6H12O6 + __ O2 9. __ Zn + __ AgNO3 ? __ Zn(NO3)2 + __ Ag 10. __ C6H6 + __ O2 ? __ CO2 + __ H2O B. Solve the following problems and write your solutions and answers in the space provided for. Use the atomic weights in the periodic table of your procedure manual. 1. Iron (II) sulfate, FeSO4, is prescribed for the treatment of anemia. a) How many moles of FeSO4 are present in a

Transcript

00:01 Okay, so i'm going to balance the first five equations for you.

00:06 Okay, so down to write here the answers.

00:13 First equation, we have iron, then we have oxygen gas, then we have here, product f2 .03.

00:22 So to balance this, we need two iron on the left, so right here too.

00:27 And we need three oxygen in both sides of the equation.

00:35 So i'm going to write here 3 over 2.

00:37 Because if you multiply 3 over 2 and 2, you will get 3.

00:42 So that means we now have a balanced number of oxygen in both sides of the equation.

00:48 So this is the balance equation.

00:50 Let me box this.

00:55 Next one, we have c2h4, plus oxygen gas.

01:00 Then we have co2 then we have h2o so to balance this we're going to right here too because we have two carbon on the left or hydrogen we have four so right here two and that means you now have a total of six and we now have a total of six oxygen and be right so we need to write here three this is our answer so balance equation third equation we have a -o -h plus h3, b -o -4 to form, this is k -3, b -o -4 plus h -2 -o.

01:47 Okay, so to balance this, we want to write here three, and also we have a total of six hydrogen on the left, so we need to write here three.

02:00 And that's it.

02:02 This is our balance equation.

02:07 Next equation we have an h3 then we have oxygen gas then we have nitrogen monoxide then we have h2 oh sorry this is h2 oh so to balance this um i'm going to right here too so that it will be easy to balance hydrogen and then you right here think now we have a six hydrogen on both sides of the equation and that means we have a total of five is it five we have a total of four but four oxygen on the right of the side of the equation but first we need to write here too so that we'll have equal numbers of nitrogen so now we have five oxygen oxygen in the right side of the equation so i'm going to write here five over two multiply five over two and two here and you'll get five so that's equal number of oxygen in both sides of the equation.

03:13 And we're done...

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