1) Please calculate the number of moles that are in 10.0 mL of water (H2O). 2)...
1) Please calculate the number of moles that are in 10.0 mL of water (H2O).
2) please calculate the mixed volume (Vmix) when 0.300 mol of ethanol and 0.300 mol of water are mixed.
a) 74.3mL
b)22.3mL
c) 22.3mL
d) 37.2mL
3) Please calculate the mole fraction of ethanol and the mole fraction of water when
0.300 mol of ethanol and 0.200 mol of water are mixed.
|
mole fraction of ethanol = 0.150 mole fraction of water = 0.150 |
||
|
mole fraction of ethanol = 0.600 mole fraction of water = 0.400 |
||
|
mole fraction of ethanol = 0.500 mole fraction of water = 0.500 |
||
|
mole fraction of ethanol = 0.300 mole fraction of water = 0.300 |
Homework Answers
1) The moles of water are calculated:
n water = 10 mL * (1 g / 1 mL) * (1 mol / 18 g) = 0.56 mol
2) The volume of water and ethanol and the mixture are calculated:
V water = 0.3 mol water * (18 g / 1 mol) * (1 mL / 1 g) = 5.2 mL
V ethanol = 0.3 mol * (46.07 g / 1 mol) * (1 mL / 0.789 g) = 17.1 mL
V mix = 5.2 + 17.1 = 22.3 mL
3) The molar fraction is calculated:
X water = n water / n total = 0.2 / 0.5 = 0.400
X Ethanol = 1 - 0.4 = 0.600
If you liked the answer, please rate it positively, you would help me a lot, thanks.
Add Answer to:
1) Please calculate the number of moles that are in 10.0 mL of
water (H2O).
2)...
26) If 250 mL of 4,00 M CaBr, is diluted to 1.60 L. the resulting solution...
26) If 250 mL of 4,00 M CaBr, is diluted to 1.60 L. the resulting solution contains A) 0.400 mole of CaBr B) 1,00 mole of CaBr C) 2.40 moles of CaBr D) 100 mole of CaBr E) 0.0500 moles of CaBr 27) If 850 mlL of 1.36 M NH CI is diluted to 4.50 L, the concentration of the resulting solution is A) 0.0356 M B) 0.200 M C) 4.00 M D) 40.0 M E) 0.257 M 28) To...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of distillate you collected, calculate the new mole fraction of ethanol in the undistilled solution that remained in the distillation flask. The volume of distillate collected is 6.2 mL.
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of...
In this lab, 10.0 mL of DI water were mixed with 32.34 mL of ethanol for distillation. Taking into account the volume of distillate you collected, calculate the new mole fraction of ethanol in the undistilled solution that remained in the distillation flask. The volume of distillate collected is 6.2 mL.
13.9 Molarity and chemical reactions in aqueous solution Volume of solution A Volume of solution B...
13.9 Molarity and chemical reactions in aqueous solution Volume of solution A Volume of solution B Molarity Molarity Particles Particles of A Avogadro's number Moles of A Equation coefficients Formula subscripts Moles of B Avogadro's number of B Molar mass Molar mass Grams of A Grams of B 2011 Pearson Education, Inc Percent by mass (g solute/g solution) Take 100 g solution Mass of solution Mass of solute Density Molar mass Volume of solution Moles of solute Division Molarity (moles...
Calculate for this drop of water 115 pt] b) Number of molecules (NA 602210") c) Number...
Calculate for this drop of water 115 pt] b) Number of molecules (NA 602210") c) Number of carbons. [15 지 13. Given the reaction, Nasio.(s) + SIRaq) → HSRaq) + 2NaRaq) + 3H00 a) How many moles of HF are needed to react with 0.300 mole of NaSio? b) When 0.500 mol HF and 1.00 mol Na.Si0, are mixed, which one is liting reactant? And how many mol NaSiO, will be dissolved?
Please show the working out for #25, 28 and 29 25) Calculate the volume (in L)...
Please show the working out for #25, 28 and 29
25) Calculate the volume (in L) of a solution that contains 3.12 moles of NaCl if the concentration of this solution is 6.67 M NaCl. A) 2.14 L B) 20.8 L C) 46.8 L D) 0.468 L 28) To prepare 25 mL of 0.25 M MgCl2 solution from a 0.75 M MgCl2 stock solution, you shouls A) 10 mL of stock solution mixed with enough water to make 25 ml...
Calculate the number of moles of CO2(g) produced when 0.250 mol CH4() is burned in the...
Calculate the number of moles of CO2(g) produced when 0.250 mol CH4() is burned in the presence of 0.400 mol O2(g). CHA(a) + 2 O2(g) - CO2a) + 2 H2O(g) 0.500 mol CO2 0.200 mol CO2 0.125 mol CO2 0.400 mol CO2 0.250 mol CO2
help with 27-29 please UI LABI 2 4oom 2.2504 405 m2 27) If 850 mL of 1.36 M NH.Cl is diluted to 4.50 L, the concentr...
help with 27-29 please
UI LABI 2 4oom 2.2504 405 m2 27) If 850 mL of 1.36 M NH.Cl is diluted to 4.50 L, the concentration of the resulting solution is A) 0.0356 M B) 0.200 M C) 4.00 M D) 40.0 M E) 0.257 M 28) To prepare 25 mL of 0.25 M MgCl, solution from a 0.75 M MgCl, stock solution, you shoul A) 10 mL of stock solution mixed with enough water to make 25 ml B)...
Calculate the pH when 10.0 mL of 0.150 M KOH is mixed with 20.0 mL of...
Calculate the pH when 10.0 mL of 0.150 M KOH is mixed with 20.0 mL of 0.300 M HBrO (Ka = 2.5 x 10-9)
do 3 QUESTION For the reaction Nacio 2(aa) 2H200) how many moles of Cl2 are needed...
do 3
QUESTION For the reaction Nacio 2(aa) 2H200) how many moles of Cl2 are needed to react with 240 g NaOH? a 0.150 mol Cl2 b 0.600 mol Cl2 20 mol Cl2 d 0.300 mol C12 e 0.400 mol Cl2
26) If 250 mL of 4,00 M CaBr, is diluted to 1.60 L. the resulting solution contains A) 0.400 mole of CaBr B) 1,00 mole of CaBr C) 2.40 moles of CaBr D) 100 mole of CaBr E) 0.0500 moles of CaBr 27) If 850 mlL of 1.36 M NH CI is diluted to 4.50 L, the concentration of the resulting solution is A) 0.0356 M B) 0.200 M C) 4.00 M D) 40.0 M E) 0.257 M 28) To...
13.9 Molarity and chemical reactions in aqueous solution Volume of solution A Volume of solution B Molarity Molarity Particles Particles of A Avogadro's number Moles of A Equation coefficients Formula subscripts Moles of B Avogadro's number of B Molar mass Molar mass Grams of A Grams of B 2011 Pearson Education, Inc Percent by mass (g solute/g solution) Take 100 g solution Mass of solution Mass of solute Density Molar mass Volume of solution Moles of solute Division Molarity (moles...
Calculate for this drop of water 115 pt] b) Number of molecules (NA 602210") c) Number of carbons. [15 지 13. Given the reaction, Nasio.(s) + SIRaq) → HSRaq) + 2NaRaq) + 3H00 a) How many moles of HF are needed to react with 0.300 mole of NaSio? b) When 0.500 mol HF and 1.00 mol Na.Si0, are mixed, which one is liting reactant? And how many mol NaSiO, will be dissolved?
Please show the working out for #25, 28 and 29
25) Calculate the volume (in L) of a solution that contains 3.12 moles of NaCl if the concentration of this solution is 6.67 M NaCl. A) 2.14 L B) 20.8 L C) 46.8 L D) 0.468 L 28) To prepare 25 mL of 0.25 M MgCl2 solution from a 0.75 M MgCl2 stock solution, you shouls A) 10 mL of stock solution mixed with enough water to make 25 ml...
Calculate the number of moles of CO2(g) produced when 0.250 mol CH4() is burned in the presence of 0.400 mol O2(g). CHA(a) + 2 O2(g) - CO2a) + 2 H2O(g) 0.500 mol CO2 0.200 mol CO2 0.125 mol CO2 0.400 mol CO2 0.250 mol CO2
help with 27-29 please
UI LABI 2 4oom 2.2504 405 m2 27) If 850 mL of 1.36 M NH.Cl is diluted to 4.50 L, the concentration of the resulting solution is A) 0.0356 M B) 0.200 M C) 4.00 M D) 40.0 M E) 0.257 M 28) To prepare 25 mL of 0.25 M MgCl, solution from a 0.75 M MgCl, stock solution, you shoul A) 10 mL of stock solution mixed with enough water to make 25 ml B)...
Calculate the pH when 10.0 mL of 0.150 M KOH is mixed with 20.0 mL of 0.300 M HBrO (Ka = 2.5 x 10-9)
do 3
QUESTION For the reaction Nacio 2(aa) 2H200) how many moles of Cl2 are needed to react with 240 g NaOH? a 0.150 mol Cl2 b 0.600 mol Cl2 20 mol Cl2 d 0.300 mol C12 e 0.400 mol Cl2
Most questions answered within 3 hours.
-
Seniority is central in many private and public sector union
contracts in the United States. What...
asked 6 seconds ago -
I have 20 children in my class, and I’m going to pick five of
them to...
asked 7 minutes ago -
Assume the $19,500 Treasury bill, 4% for 15 weeks. Calculate the
effective rate of interest. (Use...
asked 7 minutes ago -
Which of these strings is in the language {vwv: v,w has an
element of {a,b}*, |w|=3}...
asked 5 minutes ago -
Java Data Structures
Develop the algorithm for a program that will do the
following:
* Prompt...
asked 8 minutes ago -
Please help with this Chemistry Gas Law Problem
A 25.0L Oxygen cylinder contains 3.70mols of O2...
asked 16 minutes ago -
how
many constitutional isomers are possible when
3-ethyl-4-methylhexane is monochlorinated ?
asked 16 minutes ago -
The convergence theory suggests:
that poorer countries will grow faster than rich ones.
all countries eventually...
asked 21 minutes ago -
1. The key regulatory enzyme of cholesterol synthesis is
A. HMG CoA synthase
B. HMG CoA...
asked 33 minutes ago -
3. For the small data set shown below, calculate the mean,
median, and mode by hand....
asked 39 minutes ago -
which is incorrect?
struct myStruct
{
int i;
double d;
};
class myClass
{
public:
int...
asked 1 hour ago -
A galvanic cell has an iron electrode in contact with 0.19
MFeSO4 and a copper electrode...
asked 43 minutes ago