Questions and answers by

Fiona

Questions (317)

When we mix NaOH and H2SO4 we get the equationOH-(aq) + H+(aq) --> H2O(l) and if we mix H2CO3 and NaOH we get the equation
1. 0 answers
2. 853 views
When asked to name all of the ions and molecules present in a 0.1 mol L-1 solution of CH3COOH, why are there OH- ions present if
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2. 645 views
I think I made a mistake with my previous question. I have two solutionspotassium thiocyanate (KSCN) and iron (III) chloride
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2. 769 views
1. What will happen if I add water to a FeSCN+2 solution?FeSCN+2(aq) + H2O(l) <--> ???? 2. Will the equilibrium shift to the
1. 0 answers
2. 1,156 views
If the oxygen being fed into the system4NH3(g) + 5O2(g) <--> 4NO(g) + 6H20(g) + 950kJmol-1 is heated, how will the equilibrium
1. 0 answers
2. 687 views
Which of the following reactions is exothermic?1. Na(s) --> Na(g) 2. Na(g) --> Na+ + e- 3. Cl2(g) --> 2Cl(g) 4. Cl(g) + e- -->
1. 1 answer
2. 3,865 views
for the reaction4NH3(g) + 5O2(g) <--> 4NO(g) + 6H2O(g) if H = -950kJmol-1, does that mean it's an exothermic reaction? Ooops
1. 2 answers
2. 3,887 views
sorry to annoy anyone, but WHAT is the big idea of energy? i would really appreiciate a responseIn what context? Too much use.
1. 5 answers
2. 726 views
I have two substances potassium sulfate and potassium carbonate. They are unlabelled and I need to know which one is which. If I
1. 0 answers
2. 564 views
does log base of 4 sqrt(t/s)=1/2log base of 4 t - 1/2log base of 4s?sqrt=square root thanks yes yah thanks!
1. 0 answers
2. 451 views
In the reaction2H20(aq) --> O2(g) + 2H20(l) why doesn't increasing the pressure of oxygen have any effect on the reaction rate?
1. 0 answers
2. 516 views
I know that 10^-2.3=5.0 * 10^-3How do I get 10^-2.6 in the same form as 5.0 * 10^-3? please and thank you! Punch in 10 on your
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2. 955 views
I have an assigment question that I need help with.The Q states that sodium hydroxide absorbs water from the atmosphere. Then
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2. 811 views
If barium nitrate solution is added to sodium hydroxide solution does a precipitate form? Are there exceptions?I have an
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2. 1,134 views
Given four unlabeled compounds and four labels (potassium sulfate, potassium carbonate, chromium sulfate, and cobalt bromide) is
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2. 724 views
For this problem, will someone please check my answer?How many grams of oxygen are produced in the decomposition of 5.00g of
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2. 701 views
John leaves point A to travel 360klm and Joanne leaves point A 40 mins later and her cars speed is 18klm per hour faster than
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2. 559 views