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Chemistry
Page 94
Questions (96,729)
Example: Sulfur Trioxide
Chemical formula: SO3 Valence e-: ? Needed e-: ? Difference/Bond: ?? Please help me!
1 answer
asked by
Toni Jones
400 views
50 mL of a 2.5 M solution of ammonium phosphate is added to 100 mL of 1.5 M solution of calcium nitrate. At the end of the
1 answer
asked by
Hillary
392 views
To determine the value of ÄG°f(AgI2–(aq)), a researcher measured the concentrations at equilibrium to be: [I3–]eq = 4.07 M
1 answer
asked by
Krys
416 views
Determine whether the following reaction is endothermic or exothermic: Mg(g) + 2 F (g)--> Mg 2+(g) + 2 F-
Mg: I1= 738 kJ/mol I2=
1 answer
asked by
Kamila
398 views
What is the final temperature when 750 J of energy is added to 9.0 g of ice at 0.0 degress C?
1 answer
asked by
Alex
375 views
1. What is the name of the test that could differentiate lauric acid from oleic acid?
- Possible procedure? - Expected results?
1 answer
asked by
Emrich
312 views
Of helium and argon, which will have the higher boiling point and why?
1 answer
asked by
Julie
348 views
Could someone answer this question, i'd appreciate it. Im stuck on it
The C-O-H bond angle is wider in methanol compared to
1 answer
asked by
Jules
440 views
How do i work out the standard molar entropy of iron(iii) oxide from the data booklet?
1 answer
asked by
Meera
369 views
I could use some help on this question. I think the answer is choice E, but im not sure.
Alcohols can function as both
1 answer
asked by
Jules
394 views
How do I find the pH of pure neutral H2O at o degrees celsius by using standard enthalpies and standard entropies
1 answer
asked by
Tanya
292 views
Functional groups
1. are the repeating unit of polymers. 2. are groups of atoms whose chemical prop- erties are pretty much
3 answers
asked by
Bob
436 views
In the laboratory exercise "Preperation and Properties of Polymers", polyvinyl alcohol is dissolved in water and then reacted
1 answer
asked by
Chem
380 views
In a copper cycle lab, where could have the lost copper might have went?
Let's say I did a copper cycle lab and my final weight
1 answer
asked by
Lindy
372 views
How do you figure out hydrate formulas?
1 answer
asked by
Will
271 views
The vapor pressure of water at 95C is normally 6.33.9 but decreased to 561.2mmHg upon addition of an unknown amount of NaOCl to
1 answer
asked by
Jay
414 views
What mass of the following solution contains 0.100 mol of solute? 0.334 molality NH4NO3
1 answer
asked by
Anonymous
337 views
Magnesium is found in the ore,magnesite, MgCO3. The ore decomposes when heated to form magnesium oxide and carbon dioxide.
Write
1 answer
asked by
Tom
400 views
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of
the air in the flask at 257C is
1 answer
asked by
CHEMHELP..BOB
422 views
where in the atom would you put a region of fixed small volume if you wished to maximize the chance o finding the electron
1 answer
asked by
Becca
289 views
What do you think cause H2O2 to decompose rapidly
1 answer
asked by
Ton
245 views
What is the Delta H value for water that is evaporation in Joules?
1 answer
asked by
Willy
414 views
I need the structural formulas for the organic compound trans 3,4,5-triethyl-2-octyene
1 answer
asked by
Chris
386 views
I need the name of the following compounds using the IUPAC method:
NH2 CH2 | | Br\/ \/\/
1 answer
asked by
Chris
377 views
I need the name of the following compounds using the IUPAC method:
O CH2CH3 O || | // / \/ \/ \ OH
1 answer
asked by
Chris
386 views
Functional groups
1. are the repeating unit of polymers. 2. are groups of atoms whose chemical prop- erties are pretty much
5 answers
asked by
Will
420 views
How can i determine the molar mass of acetylene and its molecular formula if i only know its density at stp and its empirical
1 answer
asked by
Traci
414 views
What is the correct way to write a chiral system or R and S system?
1 answer
asked by
Chris
297 views
How many grams of copper are produced when excess aluminum reacts with 11.6g of copper oxide?
1 answer
asked by
Melissa
352 views
A 5267ml sample of h2 is collected at 772 mmhg and 21C. What would the volume be if it is cooled to oC and 1 atm?
1 answer
asked by
Terrie
294 views
How do you calculate the heat fusion of ice? I have the initial and final temperatures and volume of the water.
1 answer
asked by
Becky
336 views
You have a reaction using the following criteria: 1.3456 g of barium chloride solution (0.786M) is mixed with 1.20089 g of
1 answer
asked by
Katie
396 views
How do I balance the following into an equation? 10 mL of 2.0 M HCl is react with 8 mL of 1.7 M Ca(OH)2 in a neutralization
1 answer
asked by
Please HELP!!!
401 views
The environmental protection agency allows 10 ppb concentration of arsenic in drinking water. If an 8 oz glass of water is at 10
1 answer
asked by
Please HELP!!!
443 views
If the solubility of arsenic trioxide in water at 25 C is 20g/1L water, would 250mL of water at 25 C containing 3.5g of arsenic
1 answer
asked by
Sarab
358 views
What is the formula for measuring turbidity?
3 answers
asked by
George
382 views
Please give me the formula for measuring turbidity. I already know about the wikipedia defintion and explanation.
Thanks
3 answers
asked by
George
331 views
3.5 grams of Sodium Phosphate is mixed with 6.4 grams of Barium Nitrate. How many grams of Barium Phosphate will be produced?
1 answer
asked by
Andi
434 views
A solution is prepared by adding of KOH to 1 liter of water. The resulting solution has an [OH negative]of 1 * 10 negative 3.
1 answer
asked by
Tia
414 views
I forgot to post this one with the other
What is the freezing point of a solution containing 4.0 Mol of sodium chloride in 1200
4 answers
asked by
Laura
379 views
What is the total energy transfer(in KJ) when 10.00 pounds of water vapor at 110 degrees C becomes ice at 253K? Assume that the
4 answers
asked by
Tyler
367 views
Can you determine the pH of a 1 liter solution having an H concentration of 1.0*10 to the negative 3.5
1 answer
asked by
Tia
278 views
Mr.drwls help me to check if my answer is c0rrect,tnx anyways, what is the mass of calcium carbonate is required to react with
3 answers
asked by
joy
415 views
Help me please wether i d0ne it right,what is the mass of calcium carbonate is required to react with sulfur dioxide produced by
1 answer
asked by
joy
398 views
Here's is what I did:
Collect water samples from Farm Lane bridge (500 mL minimum)þ Filter water samples using small mesh filter
4 answers
asked by
George
433 views
A sample of nicotine weighing 0.3204 g was vaporized in a flask with a volume of 487 mL. This sample exrted pressure of 74.3 mm
1 answer
asked by
Ben
406 views
If 25 ml of bromine, a liquid element at room temperature, is added to 100ml of water, what would be the resulting molar
1 answer
asked by
Tia
396 views
If 25 ml of bromine, a liquid element at room temperature, is added to 100ml of water, what would be the resulting molar
1 answer
asked by
Tia
422 views
can someone please explain how to indicate where a label appears in a product? for example:
where the label appears in
1 answer
asked by
brian
333 views
What happen to the mixed of copper sulfate crystals and sand when adding same water on it ?
1 answer
asked by
Shokofeh
348 views
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