Questions LLC
Login
or
Sign Up
Ask a New Question
Science and Chemistry
Page 2
Questions (187)
why should you use a minimum amount of water to rinse the conical vial while transferring the purified acetaminophen to the
3 answers
asked by
teddy
1,024 views
A scientist has 0.46mL of a solution. How would she convert this volume to microliters?
3 answers
asked by
Lisa
470 views
Given the thermodynamic data in the table below, calculate the equilibrium constant for the reaction:
2SO2(g)+O2--> 2SO3
3 answers
asked by
Sara
1,107 views
U3L11 PROPERTIES UNIT TEST
1. What of the following is an advantage of the thermal properties of plastic? a. The thermal
4 answers
asked by
taylorswiftfan101
101 views
What happens if we put Fevicol in water?
Options: A) Fevicol dissolves completely in water. B) Fevicol forms a suspension in
2 answers
asked anonymously
43 views
If a sample of air contains 0.78 g nitrogen, 0.52 g oxygen, and 0.13 g carbon dioxide, what percentage of the gas is oxygen?
21.0
2 answers
asked anonymously
88 views
what is the color of the product magnesium oxide
1 answer
asked anonymously
67 views
Hemoglobin is a protein made of thousands of atoms. Using chemical bonds such as covalent and ionic bonds, these atoms are
1 answer
asked by
Mrs. Fruitloop
89 views
Glycerol is a syrupy liquid often used in cosmetics and soaps. A 3.25 L sample of pure glycerol has a mass of 4.1 kg. What is
1 answer
asked by
cjj
102 views
How would you know if free fatty acids neutralized all the NaOH in creating soap?
1 answer
asked by
Anonymous
412 views
if you want to make 50 ml of a 1x TAE solution fro a 50X stock, how would you prepare it?
1 answer
asked by
anonymous
443 views
So, I think I'm doing everything right and even checking my math, but it keeps showing up as wrong. If someone can help me and
3 answers
asked by
Jessica
563 views
Is eutectic point and eutectic mixture the same thing? If not what is the difference between the two?
Thanks in advance.
3 answers
asked by
Michelle
501 views
The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough
3 answers
asked by
danny
721 views
calculate the mass of carbon dioxide that would be produced when one gas of tank of gasoline (use octane) is burned in the air.
2 answers
asked by
Joan
675 views
* I need help writing research essay.
The topic is to write about an issue or problem that you want to change. Well, I am mostly
4 answers
asked by
Jess
517 views
hey, me again... can u please inform me of the following? its important i know this since its very hard to find on google...
how
3 answers
asked by
TTR+S<3
421 views
What will happen if I mix Muriatic acid (just a drop) in room temperature water? (about 80 ml of it)
Thanks -MC
4 answers
asked by
mysterychicken
397 views
What does it mean for something do to be neutralized? Is that when the [H+]=[OH-]? or is that totally wrong?
3 answers
asked by
K
332 views
An oxygen sample has a volume of 5 L at 27�C
and 800 torr. How many oxygen molecules does it contain?
2 answers
asked by
Anonymous
1,025 views
How do you know when a base is weak or strong?
2 answers
asked by
Anonymous
686 views
Explain what Sodium-23 means. Why is the number 23 written?
3 answers
asked anonymously
21 views
During an experiment, a student uses a beaker to measure the volume of a weak acid. When the experiment is over, what should she
3 answers
asked by
needapass
60 views
prepare 500 ml of a 1:5 solution using a 1:10 solution and a 1:4n solution. what quantities will be used of each stock solution
3 answers
asked by
cleondra
821 views
How do you write the chemical equation for neutralization of nitric acid, HNO3, with magnesium hydroxide, Mg (OH)2, first with
3 answers
asked by
Holly
2,244 views
peroxidase cannot be used to break down chemicals such as starch. why?
1 answer
asked by
val
336 views
14KMnO4+4C3H5(OH)3----->7K2CO3+7Mn2O3+5CO3+16H2O how to do it help me if you can I spend days to find this but I couldn't please
1 answer
asked by
pamela
392 views
According to the Law of Conservation of Mass, chemical equations do not have to be balanced.
True False
3 answers
asked anonymously
42 views
NEED NOW!!!!!!!!!!!!!! how many groups are there in the periodic table? and how many periods are there in the periodic table?
5 answers
asked by
sammie doodles :-)
1,005 views
i did an experiment where we titrated HCl on calcium hydroxide, and now i am confused with the calculations, i do not know if i
2 answers
asked by
Farah
628 views
what si the procedure to make a 0.10m solution of Potassium Hydroxide during a class lab?
3 answers
asked by
meghan
371 views
what contaminant will be the one that most affects the pH of soap?
1 answer
asked by
annonymous
347 views
Does anyone know what SCl6 is used in? Note: I don't mean SF6. *Sulfur Hexachloride*
Thank you :)
10 answers
asked by
Kate
1,559 views
Ok people my daughter myself and my husband have been unable to answer this question so your help would be appreciated. I asked
3 answers
asked by
wilson
2,470 views
how would you make 300mL of toluene and hexane in a artion of 70:30 respectively?
i don't un derstand please help
1 answer
asked by
steph
365 views
sorry its
5-ethyl-2-hexyne
3 answers
asked by
yaimery
306 views
HOW MANY GRAMS OF MAGNESIUM ARE REQUIRED TO PRODUCE 2.154 GRAMS OF PRODUCT? STEP BY STEP EXPLAINATION
1 answer
asked by
Donna
411 views
What is the balanced chemical equation for P+H2>PH3?
3 answers
asked by
Butt
686 views
An alcohol has an OH functionality in it. Do you expect it to be a base? why?
1 answer
asked by
Geeker
312 views
Is malleability an extensive property or an intensive property? Explain.
1 answer
asked by
stephany
478 views
How many pounds of propane,C3H8, if you pay $20 for a 15L cylinder, filled to 150 psi at 25 degrees C.
1 answer
asked by
la
277 views
what is the name for CsF?
i had cesium flouride but it's wrong... help?
5 answers
asked by
lyne
506 views
Lenny is making his own laundry soap. The recipe calls for 2 parts borax, 2 parts washing soda, and 1 part soap flakes it Lenny
3 answers
asked anonymously
220 views
what acids and alkalis are in the kitchen?
2 answers
asked by
lucy
222 views
A bath bomb is a solid sphere made of a weak base and a weak acid. When it you add it to a bathtub, it mixes with the water to
3 answers
asked anonymously
62 views
During an investigation a scientist heated 2.76 g of silver carbonate till it decomposed to leave a silver residue. The total
3 answers
asked anonymously
82 views
How do I know if a molecule is polar or nonpolar?
7 answers
asked by
Sami
530 views
And here is the discussion part of the lab
how would I put like a concluding sentence to this. DISCUSSION: This experiment was
1 answer
asked by
Suzy
487 views
a family of elements is the same as a group. The word groud needs to be replaced with the correct word????
1 answer
asked by
liz
454 views
is a chemical reaction and chemical change the same if not what is the difference?
3 answers
asked by
bella
408 views
Pages
1
2
3
4
Parent Categories (1)
Writing and Research