How do you solve this chemistry problem? Need HELP?
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A beaker with 1.90×10^2 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.40mL of a 0.480 M HCl solution to the beaker. How much will...
Answer:
First we need to figure out how mnay moles of each species there are before adding the acid. Buffer...
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Other solutions
Answer:
Well the 5 liters at 3atm would then be changed so its at 1 atm. which means that the volume would go...
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Answer:
this problem cant be solved because you need atleast 1 thing to find, yes you have to find the volume...
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Hi, could someone please help solve and explain this chemistry problem to me. Thanks! The problem is: Calculate the [H+] in the following aqueous solution of 2.5x10^-3 M of Barium Hydroxide solution Note: the answer is 2x10^-12 M but I really need someone...
Answer:
Barium Hydroxide is Ba(OH)2 which completeley dissociates to Ba2+ and 2OH- in solution As you can see...
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I'm in freshman college chemistry. This is my quiz review I'm working on. I have a big test after Spring Break. I don't even know where to start to solve this problem. "Calculate the concentration of the formate ion (CHO2-) to formic acid (HCHO...
Answer:
Actually, the Henderson-Hasselbalch equation is: pH = pKa + log([CHO2-]/[HCHO2]) The pKa = -log(Ka)...
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This is the problem. Please explain how to solve step by step so I dont have to go onto yahoo answers every time I need help with a chemistry problem 1. 59.1 grams of Barium Chloride reacts with excess liquid bromine to form Barium Bromide and gaseous...
Answer:
a. Write a balanced chemical equation Barium Chloride reacts with excess liquid bromine to form Barium...
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HI, could someone please help solve and explain this chemistry calculation to me. Thanks! The problem is: 1.00gram of a sample of limestone was dissolved in dilute hydrochloric acid and then ammonium oxalate and ammonium hydroxide added. The precipitate...
Answer:
The reactions are CaCO3 + 2 HCl = CaCl2 + CO2 + H2O CaCl2 + (NH4)2C2O4 = CaC2O4 + 2 NH4Cl moles CaC...
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I am sooo confused on my chemistry lab and I need help on it. If anyone can help me figure out how to solve the 4 questions I would love you forever. Here are the questions. 1. Calculate the number of moles of calcium used in the compound. 2. Calculate...
Answer:
You haven't given the first part of the problem, so it's practically impossible to help. However--for...
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Hard Chemistry Gas Stoich question? Can anyone help me out with this question. I am struggling with it. A small sample of drug with a mass of 0.25 g undergoes a series of reactions that changed all of nitrogen in the compound into N2. This gas had a...
Answer:
b) 17.6 mg CO2 is 17.6/44.0 = 0.400 mmol of CO2, also 0.400 mmol of C: 0.400 mmol of C has a mass of...
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I am not interested to the actual answer to the problem, only how to go about answering it, though I will post the particular numbers in the problem.. You see, I wish to understand how to figure out when variable A will surpass variable B over a length...
Answer:
rate X Time = variable A Rate X time= variable B so the point were they meet is A/rate= B/rate. so which...
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