How many milliliters of 8.00 M KOH must be added to neutralize the following solution? a mixture of 0.240 M LiOH (25.0 mL) and 0.200 M HBr (75.0 mL)
Write balanced net ionic equation for the following reaction:
HBr(aq)+Ca(OH)2(aq)→?
Classify each of the following reactions as a precipitation, acid-base neutralization, or oxidation-reduction.
a.) Hg(NO3)2(aq)+2NaI(aq) → 2NaNO3(aq)+HgI2(s)
b.) H3PO4(aq)+3KOH(aq) → K3PO4(aq)+3H2O(l)
1. Write a net ionic equation for the following reaction
Na2CrO4(aq)+Pb(NO3)2(aq)→?
2. Write a net ionic equation for the following reaction
AgClO4(aq)+CaBr2(aq)→?
3. Write a net ionic equation for the following reaction
ZnCl2(aq)+K2CO3(aq)→?
4. What is the molecular formula of salicylic acid?
5. Assume that you have 1.50 mol of H2 and 3.50 mol of N2. How
many grams of ammonia (NH3)can you make, and how many grams of
which reactant will be left over?
3H2+N2→2NH3
mNH3 =
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6. What is the molarity of an HNO3 solution if 69.0 mL is needed
to react with 25.0 mL of 0.150 MKOH solution? The equation is
HNO3(aq)+KOH(aq)→KNO3(aq)+H2O(l)
7. What mass of carbon dioxide is produced from the complete combustion of 1.10×10−3 g of methane?
8. What mass of water is produced from the complete combustion of 1.10×10−3 g of methane?
9. What mass of oxygen is needed for the complete combustion of 1.10×10−3 g of methane?
Can you please show me how to do these problems? Thank You So Much!
In: Chemistry
When methane (CH4) burns, it reacts with oxygen gas to produce carbon dioxide and water. The unbalanced equation for this reaction is
CH4(g)+O2(g)→CO2(g)+H2O(g)
This type of reaction is referred to as a complete combustion reaction.
Part B-What mass of carbon dioxide is produced from the complete combustion of 3.00×10−3 g of methane?
Part C-What mass of water is produced from the complete combustion of 3.00×10−3 g of methane?
Part D- What mass of oxygen is needed for the complete combustion of 3.00×10−3 g of methane?
In: Chemistry
Balance the following reaction in acidic conditions. If a 74.8 mL sample of a solution of H2C2O4 (aq) requires 27.5 mL of a 0.037 M KMnO4 solution for a complete reaction, what is the concentration of H2C2O4 in the original solution?
MnO4- (aq) + H2C2O4(aq) -> Mn2+(aq) + CO2(g)
In: Chemistry
Answer True or False for the following statement: a)In the following chemical reaction, CaO is the reducing agent. 2Ca(s) + O2 (g) → 2CaO (s) b)In the following chemical reaction, H2O is the reducing agent. 4Fe(OH)2 (s) + O2 (g) + 2H2O (l) → 2Fe2O3.3H2O (s)
In: Chemistry
Long and detailed theory behind HPLC. An introduction to HPLC and how the technique/instrument work and why one would want to measure the concentration of caffeine in a sample is essential.
In: Chemistry
what is the difference between K-factor and R-factor?
In: Chemistry
Explain and compare thin layer chromatography with column chromatography (in-detailed answer)
In: Chemistry
Determine the activation energy in kJ/mol for a first order reaction if its specific rate constant 8.30e-05 s-1 at 350.0 K and 3.25e+01 s-1 at 560.0 K.
Ea = ______ kJ/mol
In: Chemistry
Explain how the solid phase extraction catridges separates the colorant (a potential interference) from the analytes.
In: Chemistry
Most of our discussion of transition metals has focused around them becoming positively charged ions. However, many of the transition metals will also become negatively charged ions. Using what you have learned from quantum mechanics and about electron configurations, predict which transition metals are most likely to form anions with a charge of -1 and explain the prediction.
In: Chemistry
In a titration of a 100.0mL 1.00M NH3 solution with 1.00M HCl, what is the pH of the solution after the addition of 127 mL of HCl? Kb = 1.8 x 10-5 for NH3
In: Chemistry
Consider the titration of a 26.0-mL sample of 0.180 M CH3NH2 with 0.155 M HBr. (The value of Kb for CH3NH2 is 4.4×10−4.)
Determine the pH at 4.0 mL of added acid
Determine the pH at one-half of the equivalence point.
Determine the pH after adding 6.0 mL of acid beyond the equivalence point.
In: Chemistry
19.36:
Part A
Ca-40 (atomic mass = 39.96259 amu)
Express your answer using five decimal places.
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| Mass defect = | amu |
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Part B
Express your answer using four significant figures.
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| Binding energy per nucleon = | MeV/nucleon |
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Part C
V-51 (atomic mass = 50.94396 amu)
Express your answer using five decimal places.
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| Mass defect = | amu |
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Part D
Express your answer using four significant figures.
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| Binding energy per nucleon = | MeV/nucleon |
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Part E
Ag-107 (atomic mass = 106.905092 amu)
Express your answer using five decimal places.
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| Mass defect = | amu |
SubmitMy AnswersGive Up
Part F
Express your answer using four significant figures.
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| Binding energy per nucleon = | MeV/nucleon |
In: Chemistry
Chlorophyll a and chlorophyll b are very closely related structures and you were not able to separate them from each other in this lab by column chromatography. For each of the following variables indicate what specific change, if any, could be made to the procedure to help you separate these compounds during your column chromatography.
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Column Length |
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Extraction Solvents |
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Elution Rate |
In: Chemistry