22.21.10 2 / 4
200%
+
(411
(b)
(c)
When molten KBr is electrolyzed, write the reaction and state the product that occurs at
the anode.
(3 marks)
A 1.2 grams of butane, C. H. (FW: 58) was burned in a bomb calorimeter causing an
increase of temperature by 5.5°C. The calorimeter constant is 11.3 kJC" Determine the
enthalpy of combustion of butane
(4 marks)
(d)
A spoon was electroplated with chromium, Cr (FW 52.0) for a period of 5.5 minutes
using a constant current of 2.2 A. Calculate the weight of chromium that will be
electroplated onto the spoon. (Given: Cr + 3e Cr E= -0.740 V)
(4 marks)
أما
Iron oxide an

Ineed someone to see if my answers are correct! if any are wrong let me know what the correct answers would be and how to get that answer! 1. how many moles of sodium chloride are in 28 grams od nacl? a. 265 mole naclb. 856 mole naclc. 479 mole of nacld. 1.2 mole nacl < my choice2. 734 grams of lithium sulfate (li2so4) are dissolved to make 2500 ml of solution what is rhe molaratiy? a. 2.67 mb. 4.56 mc. 3.89 m < my choiced. 1.78 m3. how many grams of cacl2 would be dissolved in 3.0 l of a 0.50 m solution of cacl2? a. 250 g cacl2 b. 166.5 g cacl2c. 113.65 g cacl2d. 98 g cacl2 < my choice4. suppose you had 58.44 g of nacl and you dissolved it in exactly 2.00 liters. the molarity if the solution would be 0.5 mtrue < my choicefalse 5. i would need 22g of naoh to make a 3.0 m solution using 250 ml of solvent.true < my choicefalse6. identify the solute: you have a .0195 m solution made from using 6.5 g of solute and 3 l of solvent. identify the solute by solving for molar weight.a. the solute is nacl because the molar weight is 58.43 g/mol < my choiceb. the solute is h2so4 because the molar weight is 98.06 g/molc. the solute is cacl2 because the molar weight is 111.11 g/mol

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

What is the percentage of hydrogen in c2h4