Recent content by ignacioserra

  1. I

    Hi guys, im having some doubts getting this exercise:20,0 g of

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

    Hi guys, im having some doubts getting this exercise:20,0 g of

    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...
  3. I

    How Much Sodium Is Required to Produce 8g of Sodium Hydroxide?

    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?
  4. I

    How Much Sodium Is Required to Produce 8g of Sodium Hydroxide?

    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...
  5. I

    Suspended Painting: Finding Its Weight

    is the resultant of both forces equal to the weight?
  6. I

    Suspended Painting: Finding Its 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...