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October 21, 2014

Search: chem101

Number of results: 19

chem101
what is the function of an indicator in a titration
April 11, 2010 by kabelo

CHEM101
Do you have to know accurately the concentration of NaOH?
February 25, 2011 by Mahlatse

chem101
propyl Bromide reacts with Mg, Propanone, H+ to yeild what?
March 26, 2011 by richard

chem101
will the following reaction take place nh3+h2o= nh2 + h3o
April 8, 2010 by wendy

chem101
Calculate the H+ ion concentration given the following pH readings: a) 2.00 b) 9.50 c) 10.40 d)-125(is this a reasonable question neee help
November 30, 2012 by Akira12

chem101
a 0.1M NaOH solution has been prepared for you.Describe how you would prepare 1 litre of the same solution
April 11, 2010 by kabelo

chem101
A 7.2 10-3 M solution of acetic acid is 5.0% dissociated. In a 7.2 10-4 M solution, the percentage of dissociation would be Value A. The same. B. >5%. C. <5%. D. zero. E. none of these. pls explain why the answer is B
June 19, 2010 by shahd

chem101
Which of the following solutes in aqueous solution would be expected to exhibit the LARGEST freezing-point lowering (assuming ideal behavior)? A. 0.1 m NaCl B. 0.2 m CH3COOH C. 0.1 m MgCl2 D. 0.05 m Al2(SO4)3 E. 0.25 m NH3
June 20, 2010 by joan

chem101
50.0ml of 0.10M HCL{aq} was added to 40.0ml of 0.10M NaOH{aq} and the mixture was stirred,then tested with a pH meter.What reading should be obtained for pH at 25.0degrees celcias?
April 5, 2010 by justin

chem101
if 23.74ml of 0.01470M NaOH are required to completely neutralize 25.00ml of gastric juice,calculate the concentration of the hydrochloric acid[in g/L]in stomach gastric juice
April 11, 2010 by kabelo

SCIENCE(CHEM101)
iF 23.74Ml OF 0.01470m nAoh are required to completely neutrize 25.00mL of gastric juice,calculate the concentration of the hydrochloric acid(in g/L )in the stomach gastric juice.show steps and calculations
March 8, 2011 by MAHLATSE

chem101
which of the following compounds have polar bonds and a net dipole moment? a) H3COH b) H3CCOCH3 ALSO PLEASE CHECK THIS, RANK THE FOLLOWING FROM MOST TO LEAST ACIDIC COMPOUND: A)H2SO4>H3CCO2H>H20 B)H3CCH2NH2>H3CCH2OH>H3CCO2H
September 11, 2011 by sammy

chem101
Processed cheese must be at a pH of 5.5 to 5.9 to prevent growth of unwanted microorganisms. If a sample comes back with [OH-]of 7.76e-9 as a control supervisor would you send the cheese back? Justify your answer. My asnswer is no but I don't know how to justify it by showing ...
November 30, 2012 by Akira12

chem101
Processed cheese must be at a pH of 5.5 to 5.9 to prevent growth of unwanted microorganisms. If a sample comes back with [OH-]of 7.76e-9 as a control supervisor would you send the cheese back? Justify your answer. My asnswer is no but I don't know how to justify it by showing ...
November 30, 2012 by akira 12

chem101
Hydrogen gas can be produced in the lab by the reaction of magnesium metal and hydrochloric acid. Mg + 2 HC -> MgCl2 + H2 How many grams of hydrogen gas will be produce if 5.00 g of magnesium metal is dissolved in excess acid.
March 24, 2011 by richard

chem101
If a solution contains 0.0100 mole of HCl in 10.0 mL aqueous solution. a.) What is its molarity? My answer is 1M (0.0100 mole/10.0 mL * 1000 mL/1L = 1M) b.) What is H^+ ion concentration for this solution? c.) What is the expected pH for this solution? pls help i don't know ...
November 28, 2012 by audrey12

General Chemistry (Chem101)
A chemist mixes two liquids A and B to form a homogeneous mixture. The densities of the liquids are 2.0514 g/mL for A and 2.6678 g/mL for B. When she drops a small object into the mixture, she finds that the object becomes suspended in the liquid; that is, it neither sinks nor...
September 20, 2012 by Emily

chem101
The equilibrium under investigation is : H2CO3(aq) * H2O(l) + CO2(g) How does the pulling and pushing of the plunger affects the equilibrium? Is it consistent with LeChatelier's principle? my answer is that if you push you increase the pressure volume decrease and the ...
November 26, 2012 by andrew78

chem101
Endothermic reaction equilibrium: BiCl3(aq) + H2O(g) = BiOCl(s) +2HCL(aq) + 2 HCl at a point at which the sollution is colorless and a small minute amoount of BiOCl(s) is observed. for the folowing questions 1to 5: a. state which way the reaction shift in terms of LeChateliers...
November 27, 2012 by audrey12

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