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Chemistry
Page 71
Questions (96,258)
An amino acid has the form shown at
R-CH-C-O^- (with a NH2 bonded to the CH and a O double bonded to the C) (O^- means the C has
1 answer
asked by
Holly
414 views
3.5 liters of H2O are added to 500 mL of a 2.0 M HNO3 solution. What is the resulting molarity?
1 answer
asked by
Riley
318 views
Nickel was reacted with an aqueous solutionn containing 400grams of copper(II)perchlorate. The reaction was stopped after 1 hour
1 answer
asked by
Canzadia
421 views
A 20.0-mL sample of 0.20M sodium acetate is titrated with 0.11M HCl(aq). What is the pH after the addition of 50.0-mL HCl(aq)?
1 answer
asked by
Sean
409 views
Mercury vapour is used in as the dominant species which is excited in a traditional fluorescent light. The first and second
1 answer
asked by
Mary
366 views
Are the intermolecular forces that are acting ont the molecule HF as follows: dipole-dipole, ionic and hydrogen bond
3 answers
asked by
LALA
402 views
What is C2H5OH?
1 answer
asked by
Christopher
288 views
What are the common molecular shapes around the carbons?
1 answer
asked by
Kathleen
355 views
Why do chelating ligands form more stable complexes than ligands that do not chelate?
1 answer
asked by
Anonymous
378 views
can someone explain how to find
1.Chemical shift (ppm) 2.Multiplicity (splitting) 3.intergration (# of h's) for C2H6O
1 answer
asked by
Andy
393 views
At a prominent state hospital, a 45-year-old woman is receiving a ‘combined modality' treatment for the initial stage of
1 answer
asked by
Marlene
385 views
Discuss in detail, one way in which atomic nuclear decay takes place. What is the significance of atomic nuclear decay? Analyze
1 answer
asked by
Marlene
384 views
Identify a haloalkane and describe the manner in which it functions as an anesthetic.
1 answer
asked by
Marlene
302 views
Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the
1 answer
asked by
Marlene
418 views
A girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries,
1 answer
asked by
Marlene
455 views
Classify six kinds of amino acids according to the functions that they serve in the human body, stating an example for each
1 answer
asked by
Marlene
366 views
A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease.
• State the chemical
1 answer
asked by
Marlene
434 views
Explain the relation between muscles, ATP energy, and the calcium ion
1 answer
asked by
Marlene
399 views
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a
1 answer
asked by
Marlene
431 views
solve Ka for HX => H^+ + X^- given 0.1M LiX at pH=8.9
5 answers
asked by
Larry
344 views
How do I find how many moles are in 0.204 M potassium permanganate?
5 answers
asked by
Meg
423 views
what is the symbol of the element with 4d^4?
1 answer
asked by
Jazmin
347 views
Determine the concentration of a dioxin solution whose percent absorbance is 0.40%
1 answer
asked by
Stacey
348 views
How many moles are there in a 4.3 mole of tungsten?
1 answer
asked by
Chelly
343 views
How many moles are there in a 4.3 mole of tungsten?
1 answer
asked by
Chelly
346 views
Are Lewis acids and bases defined using dissociation, electron pairs, hydrogen ions, or hydroxide ions?
1 answer
asked by
tori
372 views
Why is there no reaction between Cr2(SO4)3 and Na2SO4?
1 answer
asked by
Sarah
360 views
I need to find the rate constant.
I know that it takes 2A to make B, but I am mixed up on how to figure out how to find the
1 answer
asked by
Val
366 views
The half-life for the second-order reaction of a substance A is 55.8 s when concentration of initial A = 0.69 M. Calculate the
4 answers
asked by
Val
426 views
Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give
1 answer
asked by
Anonymous
448 views
Why is it important to use liquids with relatively lower boiling points when using the Dumas method?
1 answer
asked by
Jen
402 views
Why do atoms display spectra?
1 answer
asked by
Jeff
272 views
I need help on a complex ion equation. I am not sure what the products are. Please help.
Fe(OH)2 (s) + NaOH(aq)-->
1 answer
asked by
Anonymous
394 views
What's the highest occupied molecular orbital of I-?
I'm really confused here, I thought you could only find for the first two
1 answer
asked by
echem
353 views
If 27.5 mL of 5.7 multiplied by 10-2 M HNO3 is added to 20.0 mL of 2.2 multiplied by 10-2 M HNO3, what is the pH of the
3 answers
asked by
Jenny
329 views
Naming compounds
SF(sub)2 would if be just sulfur fluoride same goes with SF (sub)6 Sulfur Fluoride?
4 answers
asked by
Anonymous
347 views
I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do
6 answers
asked by
Help please
406 views
Why do we have these two equations:
ΔH° = ΣD (bond broken) – ΣD (bond formed) and ΔH = Σ ΔHf products - Σ ΔHf reactant
5 answers
asked by
Tom
366 views
Have I balanced this equation correctly
CN + NaOCL---OCN + NaCl
3 answers
asked by
Mel
340 views
2. [4 points] Serum cholesterol levels were monitored to investigate the effect of physical training. Prior to this training,
1 answer
asked by
Alex
386 views
[4 points] In a recent poll, 10 local students were asked how many beers they drink in a typical week. The responses, in no
1 answer
asked by
Alex
329 views
Calculate the concentration of SO2(ppm) that must be reached in polluted air (in ppm) if the dissolved gas is to produce a pH of
1 answer
asked by
Laura
395 views
How much Fe++ could be present in water containing 1 x 1e-02 M HCO3- (bicarbonate) without causing the precipitation of FeCO3
1 answer
asked by
Laura
422 views
What mass (in grams)of mercury will fit into a 2 L bottle?
M= DV V= 2L= 2,00o mL D= 13.6 g/ mL Mass= 27, 200 grams??
4 answers
asked by
Amy
407 views
In the neutralization of HCl and NaOH i was instructed to measure the temperature of the acid HCl prior to mixing the reaction
1 answer
asked by
Jane
408 views
What will be the final temperature of a 22.0 g piece of iron (Cp = 25.09 J/K • mol), initially at 25°C, if it is supplied
1 answer
asked by
Stephen
389 views
An alcohol will form an alkoxide ion when reacted with what?
1 answer
asked by
Deirdre
344 views
does oxyanion contain oxygen?
I think it contains oxide, but I'm not sure about oxygen. Thanks in advance!
1 answer
asked by
Carla
325 views
How can you tell if [ MnCl6]4- or [ Mn(CN)6 ] 4- has the longer wavelength of light? and then how do you figure out how many
1 answer
asked by
Trixie
419 views
why shold you heat the evaporating dish containing the contents to fume hood. Why should the content be heated in the fume hood.
1 answer
asked by
Sarah
302 views
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