Recent content by ignacioserra

20 g of iron. should I do 152/20?

Hi guys, I am having some doubts getting this exercise: 20,0 g of iron (60% purity) are reacted with sulphuric acid (80 % pure) Iron (II) sulphate and hydrogen are formed: Fe + H2SO4 → H2 + FeSO4 1. Which is the limiting reactant? 2. How much Iron (II) sulphate will be obtained? 3...

So: NaOH= 16+23+1= 40 Na= 23 23g of Na produce 40 g of NaOH. Right? So, 23 --- 40 x --- 8 ? 40/5 = 8 23/5= 4.6 g is that the answer?

Hello! Can somebody help to figure out this pls? Sodium reacts in water to form sodium hydroxide and hydrogen gas. Write a balanced equation for this reaction and calculate how many grams of it are needed to prepare 8 g of sodium hydroxide by this method. Ar(H)=1 Ar(O)=16 Ar(Na)=23...

is the resultant of both forces equal to the weight?

Homework Statement A painting hangs from two identical silk ropes that form an angle of 120º. Both ropes make forces of 400 N each to keep it in place. Homework Equations a. Find the combined force of both silk ropes.(I have already done it) b. How heavy is the painting?(need help in...