10/24/21

Vodka is a 6.86 M aqueous solution of ethanol. How many mL of ethanol are needed to make 500.0 mL of Vodka?

Question:Vodka is a 6.86 M aqueous solution of ethanol. How many mL of ethanol are needed to make 500.0 mL of Vodka? (density of ethanol = 0.789 g/mL, C2H5OH: 46.07 g/mol)
Follows • 2
Expert Answers •1

10/24/21

PLease help with this chemistry homework
Aluminum can be determined gravimetrically by reaction with a solution of 8-hydroxyquinoline (C9H7NO). The net ionic equation is:Al3+ (aq) + 3C9H7NO- (aq) = Al(C9H6ON)3 (s) + 3H+ (aq)A mass of... more
Follows • 2
Expert Answers •1

10/24/21

Solutions by Mass
What is true of an aqueous solution that is 15.0 percent HNO3 by mass? It contains 15.0 grams of HNO3 per 1.0 liter of water. It contains 15.0 grams of HNO3 per 100 grams of solution. It contains... more
Follows • 2
Expert Answers •1

10/24/21

Chemestry heat and entropy
If a system produces 111.0 kJ of heat and does 45.0 kJ of work on the surroundings, what is the ∆E for the surroundings, in kJ
Follows • 2
Expert Answers •1

10/23/21

PLEASEEE chemistry problem please help
During lab, a student mixed 25 mL of 1.0 M H3PO4 with 75 mL of 1.0 M NaOH. Using the equation below, determine how many moles of reaction the student performed. ____ moles of reactionThe intial... more
Follows • 2
Expert Answers •1

10/23/21

Complete combustion of 2.80 g of a hydrocarbon produced 8.58 g of CO2 and 4.10 g of H2O. What is the empirical formula for the hydrocarbon? empirical formula: CH
Follows • 2
Expert Answers •1

10/23/21

Calculate the molality ( 𝑚 ) of the potassium ion ( K+ ) in a 0.681 𝑚 aqueous solution of K2CO3 . molality of K+ : 𝑚
Follows • 2
Expert Answers •1

10/23/21

If 4.55 mL of 10.0 M NaOH is used for a reaction, calculate the number of moles of NaOH that were used. number of moles of NaOH= mol
Follows • 2
Expert Answers •1

10/23/21

A sample of aluminum foil contains 5.90×1023 atoms. What is the mass of the foil? mass: g
Follows • 2
Expert Answers •1

10/23/21

Chemistry Question, need help asap!
During lab, a student mixed 25 mL of 1.0 M H3PO4 with 75 mL of 1.0 M NaOH. Using the equation below, determine how many moles of reaction the student performed. ____ moles of reactionThe intial... more
Follows • 2
Expert Answers •1

10/23/21

Chemistry Help!!
In one demonstration of this reaction, 16.00 mL of H2 are collected over water at 25°C. Atmospheric pressure is 767.0 mmHg. How many grams of H2 are collected?
Follows • 2
Expert Answers •1

10/23/21

interconverting atmospheres and torr
The normal maximum pressure exerted by a human heart is 0.158atm. Calculate the normal maximum pressure exerted in mmHg and torr. Round each of your answers to 3 significant digits. 
Follows • 2
Expert Answers •1

10/23/21

answer and show work please
What mass of water is needed to completely react with 2.35g of Ca?
Follows • 2
Expert Answers •1

10/23/21

Answers and show work please
450mL of a 0.85M solution of H2SO4 react with aluminum. What mass of aluminum sulfate can be produced?
Follows • 2
Expert Answers •1

10/23/21

I can't figure this out? I have to show work as well
What volume of NH3 gas is produced if 25.0g of H2 is reacted with N2? The answer is [184.82], but I cant get the work.
Follows • 2
Expert Answers •1

10/23/21

Chemistry(I don’t get it and can you please add steps? Thank you)
Here is the questionPotassium chlorate is sometimes decomposed in the laboratory to general oxygen. The reaction is 2KCIO3(s) -> 2KCI(s) + 3O2(g). What mass of 3KCIO3 do you need to produce 0.50... more
Follows • 2
Expert Answers •1

10/23/21

Calculate the concentration of the dye Blue #1 if 0.1018.g are dissolved in 100.00mL of water. The molar mass of Blue #1 is 792.86 g/mol.
Follows • 2
Expert Answers •1

10/23/21

Which is true about one formula unit of CaBr2?
Which is true about one formula unit of CaBr2?A) There is one 1 Ca atom and 1Br2 moleculeB) There is one CaBr2 moleculeC) There is 1 Ca atom and 2 Br atomsD) There is 1 positive Ca ion and 2... more
Follows • 2
Expert Answers •1

10/23/21

How many oxygen atoms are in 19 molecules of dinitrogen tetroxide?
How many oxygen atoms are in 19 molecules of dinitrogen tetroxide? N2O4
Follows • 2
Expert Answers •1

10/23/21

How many moles produced during a reaction
How many moles of H2O form when 6.70 mol of C3H8 completely reacts? Show each step.
Follows • 2
Expert Answers •1

10/22/21

What is the identity of the third gas

A 50.00L sealed vessel is filled with a mixture of three gases at 25.0 degrees C. The mixture has a total mass of 137.860 g. and exerts a total pressure of 2.875 atm. if the mixture contains 4.00... more
Follows • 2
Expert Answers •1

10/22/21

Chemistry Mole/Gram and Balance Help?
1. What mass of water is produced from the complete combustion of 8.50×10−3 g of methane?2. What mass of oxygen is needed for the complete combustion of 8.50×10−3 g of methane?
Follows • 2
Expert Answers •1

10/22/21

A lotion vehicle contains 15% v/v of glycerin. How much glycerin in grams should be used in preparing 5 gallons of the lotion?

Follows • 2
Expert Answers •1

10/22/21

chem question (redox)
How many electrons are being transferred in the reaction below when the reaction is balanced?(Cr2O4)^-2 + Cl^-3 -> Cr + Cl2
Follows • 2
Expert Answers •1

10/21/21

The number of valence electrons found in an atom of a Group A element is equal to
A. atomic numberB. Group numberC. EightD. Eight minus the group number
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.