Answer : The 
for the reaction is, 54.89 KJ
Solution : Given,
Mass of ZnS = 48.7 g
Molar mass of ZnS = 97.474 g/mole
First we have to calculate the moles of ZnS.
The balanced combustion reaction is,
From the given reaction, we conclude that
As, 2 moles of ZnS gives energy = 220 KJ
So, 0.499 moles of ZnS gives energy = 
Therefore, the for the reaction is, 54.89 KJ
Answer:
vinegar is acidic
water should be neutral but people say since it's pH 7,it will be more alkaline
salt solution is acidic
lemon juice is acidic
sugar solution is alkaline
soap is alkaline
Methyl orange will turn red with grapefruit juice.
Methyl orange will turn yellowish orange or lemme say red with oven cleaner
The addition of pure water to methyl orange will not have an effect on the color and the solution will still be around neutral pH and yellow in color.
Explanation:
Working on number 7
Answer:
NH₃ and H⁺
Explanation:
The dissociation of NH₄Cl will lead to two ions , i.e. , NH⁴⁺ and Cl⁻ .
Hence , the reaction is -
NH₄Cl → NH⁴⁺ + Cl⁻
We can conclude that NH₄Cl can be formed from the ions , NH⁴⁺ and Cl⁻
Hence ,
According to the reaction ,
NH⁴⁺ + H₂O ⇆ NH₃ + H₃O⁺
Therefore ,
The reactant that will lead to the formation of NH₄Cl are - NH₃ and H⁺
If it is multiple choice the answer is <span>C. 0.012 L.</span>
H2O means each molecule of water consists one oxygen atom chemically bonded to two hydrogen atoms. Which means that WATER is a COMPOUND.
