Homework Answers
26)
Dilution will not effect the number of mol.
Number of mol after dilution = number of mol before solution
= M(CaBr2)*V(CaBr2) in L initially
= 4.00 M * 0.250 L
= 1.00 mol
Answer: B
27)
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 1.36 M
V1 = 850 mL
V2 = 4500 mL
use:
M1*V1 = M2*V2
M2 = (M1*V1)/V2
M2 = (1.36*850)/4500
M2 = 0.257 M
Answer: E
Only 1 question at a time please
Add Answer to:
13.9 Molarity and chemical reactions in aqueous solution Volume of solution A Volume of solution B...
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...
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)...
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...
8-47 Calculate the mass-volume percent of MgCl, in each of the following solutions. a. 5.0 g...
8-47 Calculate the mass-volume percent of MgCl, in each of the following solutions. a. 5.0 g of MgCl, in enough water to give 250 mL of solution b. 85 g of MgCl, in enough water to give 580 mL of solution 8-43 Calculate the volume percent of solute in each of the following solutions. a. 20.0 mL of methyl alcohol in enough water to give 475 mL of solution b. 4.00 mL of bromine in enough carbon tetrachloride to give...
In Part A, you explored the relationship between molarity, the number of moles, and solution volume....
In Part A, you explored the relationship between molarity, the number of moles, and solution volume. However, when you prepare a solution, you are unable to directly measure the number of moles of solute. Instead, you can mass the solute and convert between the number of moles and mass using the molar mass of a substance as a conversion factor. The molar mass of a substance can be calculated based on its molecular formula; otherwise, it can be calculated from...
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving...
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving 41.5 g of potassium iodide (KI; Molar Mass = 166.0 g/mole) in enough water to make 2,500.0 mL of solution? (5 points]
SOLUTIONS (Molarity, Molality) SECTION 9) What is the molarity [MJof a solution that is made by...
SOLUTIONS (Molarity, Molality) SECTION 9) What is the molarity [MJof a solution that is made by dissolving 2.00 moles of solute in 300. mL of solution? 10) What is the molarity of the solution when 0.400 moles of copper sulfate dissolves in 0.200 liters of solution? 11) What is the molarity of solution when 16.88g of sodium chloride is dissolved in water to a total volume of 1000.00 ml? What is the mass percent of 10.0 grams Mg (NO3)2 dissolved...
help with #30 and 32 2 solution is needed to react with 500 ml. of 0.100...
help with #30 and 32
2 solution is needed to react with 500 ml. of 0.100 M H3PO4 30) What volume of 0.30 M Cu(OH)2 solution i solution? JOHT),(aq) + 2H3PO4(aq) → Cu,(PO4 + 6H2017) A) 33.3 mL B) 60.0 mL C) 83.3 mL D) 167 mL |E) 250 ml olubility of each solute-solvent combination by writing the word soluble or insoluble Short Answer Questions: 31) Predict the solubility of each solute the blank space. A) NO2 (a polar gas)...
In Part A, you explored the relationship between molarity, the number of moles, and solution volume....
In Part A, you explored the relationship between molarity, the number of moles, and solution volume. However, when you prepare a solution, you are unable to directly measure the number of moles of solute. Instead, you can mass the solute and convert between the number of moles and mass using the molar mass of a substance as a conversion factor. The molar mass of a substance can be calculated based on its molecular formula; otherwise, it can be calculated from...
1a. An aqueous solution has a Molarity of 1.632 M. The density of the solution is...
1a. An aqueous solution has a Molarity of 1.632 M. The density of the solution is (1.150x10^0) g/mL and the solute has a molar mass of (1.33x10^2) g/mol. What is the molality of this solution? 1b. An aqueous solution has a mass percent of solute of 18.4%. The density of the solution is (1.400x10^0) g/mL and the solute has a molar mass of (1.77x10^2) g/mol. What is the molality of this solution? 1c. An aqueous solution has a molality of...
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...
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)...
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...
8-47 Calculate the mass-volume percent of MgCl, in each of the following solutions. a. 5.0 g of MgCl, in enough water to give 250 mL of solution b. 85 g of MgCl, in enough water to give 580 mL of solution 8-43 Calculate the volume percent of solute in each of the following solutions. a. 20.0 mL of methyl alcohol in enough water to give 475 mL of solution b. 4.00 mL of bromine in enough carbon tetrachloride to give...
What is the molarity (moles per Liter) of an aqueous solution that is prepared by dissolving 41.5 g of potassium iodide (KI; Molar Mass = 166.0 g/mole) in enough water to make 2,500.0 mL of solution? (5 points]
SOLUTIONS (Molarity, Molality) SECTION 9) What is the molarity [MJof a solution that is made by dissolving 2.00 moles of solute in 300. mL of solution? 10) What is the molarity of the solution when 0.400 moles of copper sulfate dissolves in 0.200 liters of solution? 11) What is the molarity of solution when 16.88g of sodium chloride is dissolved in water to a total volume of 1000.00 ml? What is the mass percent of 10.0 grams Mg (NO3)2 dissolved...
help with #30 and 32
2 solution is needed to react with 500 ml. of 0.100 M H3PO4 30) What volume of 0.30 M Cu(OH)2 solution i solution? JOHT),(aq) + 2H3PO4(aq) → Cu,(PO4 + 6H2017) A) 33.3 mL B) 60.0 mL C) 83.3 mL D) 167 mL |E) 250 ml olubility of each solute-solvent combination by writing the word soluble or insoluble Short Answer Questions: 31) Predict the solubility of each solute the blank space. A) NO2 (a polar gas)...
In Part A, you explored the relationship between molarity, the number of moles, and solution volume. However, when you prepare a solution, you are unable to directly measure the number of moles of solute. Instead, you can mass the solute and convert between the number of moles and mass using the molar mass of a substance as a conversion factor. The molar mass of a substance can be calculated based on its molecular formula; otherwise, it can be calculated from...
Most questions answered within 3 hours.
-
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 1 hour ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 1 hour ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 1 hour ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 1 hour ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 1 hour ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 1 hour ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 1 hour ago -
Write MARIE assembly language programs that do the following:
Write a program that inputs an integer...
asked 1 hour ago -
Explain an understanding of services and protocols.
Explain the job of DNS.
Explain the three email...
asked 2 hours ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 2 hours ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 2 hours ago -
Inheritance pattern in BRCA 1
Describe the inheritance pattern of BRCA 1 Is it recessive or...
asked 2 hours ago