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Chemistry
Page 69
Questions (96,840)
Consider 57.5 mL of a solution of weak acid HA (Ka = 1.00 10-6), which has a pH of 3.800. What volume of water must be added to
1 answer
asked by
Carry
353 views
Why might exposure to organic chemicals be a problem? Refer especially to halogenated hydrocarbons and alcohols.
Help please. thx
3 answers
asked by
Jane
405 views
Why are carboxylic acids and phenols acidic?
1 answer
asked by
Brad
371 views
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate?
1 answer
asked by
Kim
372 views
How many moles of KMn)4 are required to reach with the moles of Na2C2O4 in the last problem?
and also, if the KmnO4 of the last
1 answer
asked by
Kim
398 views
how many moles of Na2C2O4 are there in 25.00 mL of a .7654 M solution of sodium oxalate?
How many moles of KMn)4 are required to
2 answers
asked by
NEED ASAP FOR TOM MORNING!! PLZ HELP!!!
783 views
What is a balanced equation for the formation of [Co(NH3)5Cl]2+ from [Co(NH3)5(OH2)]3+ ?
1 answer
asked by
Alice
414 views
What are some examples of covalent bonds? What are covalent bonds made of? Thanks.
1 answer
asked by
Brianne
388 views
what phase are homogeneous and heterogeneous mixtures? Thank you
1 answer
asked by
Corinna
397 views
Atoms stick together in bonds to form molecules. What is responsible for this sticking?
Thank you.
1 answer
asked by
Dani
314 views
I had to find the numbers of atoms in 2 Al (NOsubscript 3)subscript 3. I got 16, but the answer in my book is 26. Who is
3 answers
asked by
Elle
289 views
Heat Capacity at constant volume:
CV = (partial q / partial T) with V constant since volume is constant, work is zero and dq =
1 answer
asked by
jake
416 views
I have to balance a double replacement chemical reaction. I do not know if I am doing it right. The question is
1/2 of A combines
4 answers
asked by
Lee
352 views
What are the factors that can cause titration of 25 mL mixture of sodium bicarbonate and sodium carbonate with HCL not to reach
1 answer
asked by
chemy
336 views
I am working with cations, and anions. Are you supposed to have the subscripts balance, or the top numbers? Or both? Why would a
5 answers
asked by
Nelle
446 views
When you have a choice of two or three ions, how do you determine which one to use in your cations/anions? Thanks!!
10 answers
asked by
Nelle
408 views
How would you write out the names of NaOH, since the oxygen is before the hydrogen? I'm accustomed to writing the oxygen last.
1 answer
asked by
Nelle
327 views
How can Ag2Cro4 have a four on the O? Ag has a charge of two, so multiplying it by 2 would give me two, but multiplying Cr, with
1 answer
asked by
Nelle
380 views
The name of one of the compounds given on my worksheet is Molybdenum V. But according to my periodic table, there is no
3 answers
asked by
Nelle
361 views
Could this be right? :AG^+1 is the cation. The Anion is SO4^-2. For the compound I wrote Ag4SO1, and in word form, I wrote
1 answer
asked by
Nelle
440 views
How can Ammonia be a base since it lakes a hydroxide ion? thank you so much
1 answer
asked by
Ken
324 views
Explain what change substituting a chlorine for one of the hydrogen atoms to make CH3Cl would create in the molecule?
1 answer
asked by
???Help! Please and Thank You
394 views
Since we say that sand is silicon dioxide,it is considered a compound and not a mixture?
1 answer
asked by
carrie
385 views
Hi.
Can anybody help me with crystals? I have a gas that makes blue crystals when it's been hold in low temperature and high
1 answer
asked by
Ksenija
398 views
Is sulphuric acid covalent? Please explain. Thanks.
1 answer
asked by
anne
356 views
Is fertilizer usually basic or acidic? I'm referring to fertilizers that contain nitrates, phosphates, and arsenic. Thanks for
1 answer
asked by
Kendra
389 views
What is meant by the hyrdration of the hydrogen ion? Does this mean you add water? Does this mean you create hydronium ions? Are
3 answers
asked by
Michelle
427 views
Rank from most to least active based on placement on periodic table : Magnesium, potassium, sodium.
3 answers
asked by
danny
357 views
Last one. Describe how you would prepare 100ml of a solution that is 22% acetic acid by volume?
1 answer
asked by
Jessi
380 views
Developement of avogadro's number/mole concept?
3 answers
asked by
Sammi
369 views
Why is water liquid and carbon dioxide gas? Based on things like polarity, polar vs. non-polar
1 answer
asked by
Sabrina
419 views
Starting with S = k<sub>B</sub> * ln W
Derive S = (U(T) - U(0)) / T + N * k<sub>B</sub> * ln q(T)
1 answer
asked by
Sean
280 views
Information about the development of Avogadro's number.
1 answer
asked by
Eve
313 views
I just did a lab on Acids and Bases and I am having trouble with the lab questions I was given to complete.
Concentration of
1 answer
asked by
Lalu
414 views
What does a high ENC indicate if we are comparing two compounds for example Csl and CaCl2?
To caculate the ENC we simply take the
4 answers
asked by
Cindy
383 views
Explain in detail, which of the following pairs would have a higher melting point NH3 or P4
4 answers
asked by
Sara
344 views
We say that an ionic bond is the electrostatic force of attraction between oppositely charged ions. What does electrostatic
1 answer
asked by
anne
389 views
I was reviewing chem equations online. This one site said this is a balanced equation. I don't see why there are 13 oxygens!
1 answer
asked by
Meghan
409 views
What pressure will be exerted by 109 grams of fluorine gas in a 3,4000mL cylinder at 20degree celcius?
1 answer
asked by
Ivana
361 views
A textbook says that each ion in an ionic compound has the noble gas configuration. What about aluminium oxide?
1 answer
asked by
candy
346 views
The combustion of methane gives carbon dioxide and water.
CH4 + O2 --> CO2 + H2O For state symbol of water, is it liquid state or
2 answers
asked by
candy
863 views
If I react CuSO4 (solid) with aqueous NaOH, I will get Cu(OH)2 solid. How do I write the ionic equation?
1 answer
asked by
candy
400 views
I am figuring out how many moles of CU2SO4 are in 485.6 grams. How would you set up the proportion for this? What would the
4 answers
asked by
Meghan
354 views
Tell me a website from where i can get full information regarding IUPAC nomenclature of organic chemistry. It's rules,
1 answer
asked by
Akash
397 views
1) Is chalk a mixture or a compound?
2)We say that reactive metals react with acids to give salt + hydrogen gas.Is it necessary
1 answer
asked by
janice
407 views
We say that most bases are metal oxides and hydroxides, so an example of a base that is not ana oxide or hydroxide would be
1 answer
asked by
janice
389 views
An alkali is a soluble base.
Is barium hydroxide an alkali?
1 answer
asked by
janice
375 views
Why is the carbonyl group in tert-butoxycarbonyl group (tBOC) less susceptible to attack from nucleophiles than the carbonyl
1 answer
asked by
Alice
428 views
How would you scale down an organic chemistry experiment? Would you have to know an expected percent yield to scale it down?
1 answer
asked by
Jason
339 views
Which element has a greater electroniegativity, Al or Ge. I wasn't sure, since Al was further up, but Ge was further right.
1 answer
asked by
Nicki
354 views
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