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Science/Chemistry
Page 2
Questions (103)
Is this true
Dispersion forces generally increase in strength as the number of electrons in a molecule increases. The number of
1 answer
asked by
Jeff
1,030 views
At what wavelengths do Cr(III) ions absorb the maximum amounts of light?
Look at your color wheel. What color is Cr(III)? It will
1 answer
asked by
Anonymous
1,182 views
Given the following nuclear reaction:
252/99 Es → 0/-1e + A/Z X Column A 1. What is the atomic mass of the new atom? 2. What is
1 answer
asked by
Anonymous
44 views
Basic organic compounds tend to be soluble in organic solvents and insoluble in neutral water. However, they can be extracted
1 answer
asked anonymously
49 views
An 80 proof brandy is 40.0% (v/v) ethyl alcohol. The "proof" is twice the percent concentration of alcohol in the beverage.How
4 answers
asked by
tracy
1,966 views
What is the solubility of benzoic acid in room temperature water. Report this in grams/L.
4 answers
asked by
Cassie
1,573 views
References on Major source and fate of the following substances in ruminant digestion.
Propionic, ethanoic and butanoic acid
1 answer
asked by
KEDDYRICK
45 views
1. Use standard entropies and heats of formation to calculate delta-G of formation at 25° C for
a) cadmium(II) chloride (s) b)
2 answers
asked by
Chris
1,150 views
A non toxic floor wax can be made from lemon juice and food grade linseed oil. the amount of oil should be twice the amount of
2 answers
asked by
angela
1,105 views
why the thermal stability decreases across the period in s-block elements ?
2 answers
asked by
meme
1,011 views
Why is deuterium oxide called “heavy water”?(1 point)
Responses Its oxygen atoms are heavier than others. Its oxygen atoms
1 answer
asked anonymously
47 views
I have to write the balanced equation for the reaction between hydrochloric acid and zinc metal.I came to the answer of:
HCl+Zn(s
1 answer
asked by
Chrissy
886 views
Does anybody have the answers to the unit 3 lesson 14 energy in chemical reactions II unit test? I have no clue what I'm doing
2 answers
asked by
Plz help me
873 views
The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of
2 answers
asked by
Kate
787 views
you used a pencil to mark the chromatography paper since the carbon in the "lead" pencil does not dissolve in the solute. why
2 answers
asked by
anon
750 views
To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water.
4 Au(s) + 8
2 answers
asked by
Dovahkiin
697 views
WHAT IS HS2SO4
2 answers
asked by
Anonymous
654 views
Suggest other suitable indicators for determination of calcium trioxocarbonate (iv) content in chalk by back titration
2 answers
asked by
Wealth
667 views
Why use Methyl tert-butyl ether in the organic chemistry lab when separating compounds?
separating WHAT compounds and how? as a
1 answer
asked by
Ba
689 views
Which process may not reduce the toxicity of a chemical in the body? Sequestration
Chemical bond formation Elimination Blood flow
3 answers
asked by
Anonymous
617 views
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What
1 answer
asked by
Ayesha
621 views
Your balloon contains 22 grams of Carbon dioxide. Use the following link to determine the temperature in your area. and then use
9 answers
asked by
amy
627 views
calculate the expansion work done when 50 g of water is electrolyzed under constant pressure at 25 c...why i get 6.8kj
1 answer
asked by
jayantthi
620 views
What improvements could i make to this lab? so far i only have that the graduated cylinder should be changed to a buret for a
5 answers
asked by
Kate
594 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
5 answers
asked by
Help please
594 views
I would love some input on a few problems, listed below. My answers follow the questions
1. Would it be feasable to store a
3 answers
asked by
delany
597 views
why should samples be weighed rather than measured volumetrically when determining the acetic acidin vinegar
2 answers
asked by
nompumelelo
551 views
i had 2 question left to finish but i cant really undersdand how to do it
9)design an elextrochemical cell using Pb(s) and Mn(s)
2 answers
asked by
sam
544 views
What must we know a given ionic salt to be able to predict whether is is a good or poor conductor, w/o testing its conductivity?
2 answers
asked by
judy
543 views
(Chemistry: Wind Chill) At 0℃ the heat loss H (in kilocalories per square meter per hour) from a person’s body can be
2 answers
asked by
Mabeuf
485 views
what other experiments or techniques can be used in replace of infrared spectroscopy
2 answers
asked by
Yoo
523 views
Calculate the theoretical volume of gas you would expect to be evolved
from your experiment if X moles of magnesium were reacted
2 answers
asked by
Anonymous
510 views
What are advantages/disadvantages to using esters in foods?
2 answers
asked by
Sujay
499 views
Temp - 650
Pressure - 690mm Hg mass - 0.927g volume - 194cm3 How do I calculate the volume of the gas? You have the volume,
1 answer
asked by
bex
490 views
How to prepare a 750mL stock solution with a 0.40 M Na2S2O3.
4 answers
asked by
GoodinChem619
478 views
Student were given a mkxture of marbles,salt sand,and pebbles. Most efficent way to separate this listing 5 step direcxion and
2 answers
asked by
biby
480 views
What type of lattice would FrCl have?
...im not sure about this, would a lattice form? if so, how to determine lattice type?
1 answer
asked by
Alex
441 views
Calculate the number of moles of CaCO3 in 3.20g of Calcium Carbonate.
3 answers
asked by
Samantha
467 views
A mixture made up of a solvent and a solute
1 answer
asked anonymously
31 views
Using the periodic table above, find the element that has 6 energy levels and 5 valence electrons.
The vertical groups on the
1 answer
asked anonymously
52 views
Group 1 atoms from what type of lons?
• positive 1 • negative 1 Neutral Positive
1 answer
asked anonymously
16 views
What is the dark sticky substance that forms when tobacco is burned
1 answer
asked anonymously
60 views
Which procedure could be used to demonstrate that matter is conserved during a physical change?(1 point) Responses Find the mass
1 answer
asked by
max
23 views
In a model kit for ethanol, how many dark gray spears would you use in your model?
1 answer
asked anonymously
16 views
A chemical spill is leaking into a river flowing 2 3/10 miles per hour
How long will it take the chemicals to reach a town
1 answer
asked anonymously
19 views
how would you describe gas if your doing a project
1 answer
asked anonymously
19 views
Which is a raw material for fermentation?
water sugar carbon dioxide oxygen
1 answer
asked anonymously
9 views
Cement is made up mainly of two chemical elements. What are they?
1 answer
asked anonymously
9 views
. Consider the following data table Beaker Volume Contents 50 mL 0.2 M NaOH 25 mL 0.1 M KOH 3 20 mL 0.2 M NH4OH 15 ml 0.1 M
1 answer
asked by
talis sanchez
24 views
______________ are a sink for carbon dioxide when they form, but they are a source when humans burn them.
1 answer
asked anonymously
16 views
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