Homework Answers
a)
volume , V = 5.75*10^2 mL
= 0.575 L
use:
number of mol,
n = Molarity * Volume
= 2.4*0.575
= 1.38 mol
Molar mass of HNO3,
MM = 1*MM(H) + 1*MM(N) + 3*MM(O)
= 1*1.008 + 1*14.01 + 3*16.0
= 63.018 g/mol
use:
mass of HNO3,
m = number of mol * molar mass
= 1.38 mol * 63.02 g/mol
= 86.96 g
Answer: 87.0 g
b)
volume , V = 1.65 L
use:
number of mol,
n = Molarity * Volume
= 0.284*1.65
= 0.4686 mol
Molar mass of C3H7NO2,
MM = 3*MM(C) + 7*MM(H) + 1*MM(N) + 2*MM(O)
= 3*12.01 + 7*1.008 + 1*14.01 + 2*16.0
= 89.096 g/mol
use:
mass of C3H7NO2,
m = number of mol * molar mass
= 0.4686 mol * 89.1 g/mol
= 41.75 g
Answer: 41.8 g
c)
volume , V = 3.2*10^2 mL
= 0.32 L
use:
number of mol,
n = Molarity * Volume
= 8.7*10^-3*0.32
= 2.784*10^-3 mol
Molar mass of CaSO4,
MM = 1*MM(Ca) + 1*MM(S) + 4*MM(O)
= 1*40.08 + 1*32.07 + 4*16.0
= 136.15 g/mol
use:
mass of CaSO4,
m = number of mol * molar mass
= 2.784*10^-3 mol * 1.362*10^2 g/mol
= 0.379 g
Answer: 0.379 g
Add Answer to:
This question has multiple parts. Work all the parts to get the most points. How many...
(References This question has multiple parts. Work all the parts to get the most points. Calculate...
(References This question has multiple parts. Work all the parts to get the most points. Calculate the concentration in %(v/v) of the following solution. a 3.00 x 10°-mL of solution contains 45.7 ml of any soluble liquid solute. Concentration = % (v/v) b 3.0 quarts of acetic acid is put into a 8.0-gallon container, and enough water is added to fill the container Concentration= % (v/v) C A solution of acetone and water is separated by distillation. A 4.00 x...
This question has multiple parts. Work all the parts to get the most points How many...
This question has multiple parts. Work all the parts to get the most points How many molecules are in each of the following? a 3.5 mol of TNT, C7H3N306 molecules (b one drop (0.0500 g) of water molecules C 3.9 x 10 g of aspirin, Cg HgO4 molecules Try Another Version 10 item attempts remaining Submit Answer Ethyl chloride is prepared by the reaction of chlorine with ethane according to the following balanced equation C2He(g)+Cl2(g) Ethane C2H5CI()+HCI(g) Ethyl chloride When...
so locator assignment-take References This question has multiple parts. Work all the parts to get the...
so locator assignment-take References This question has multiple parts. Work all the parts to get the most points. You require 34.45 mL of 0.0105 M HCl to reach the equivalence point in the titration of 25.0 ml. of aqueous ammonia a What was the concentration of NH, in the original ammonia solution? Concentration Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. How would...
This question has multiple parts. Work all the parts to get the most points. How would you prepare 1.10 L of a 0.70-M solution of each of the following? a H, SO Dilute from "concentrated" (18 M ) sulfuric acid m L of concentrated H2SO4 pt 1 pt b HCl from concentrated" (12 M) reagent 1 pt Dilute mL of concentrated HCI NICI, from the salt NiCl 64,0 Dissolve g of NiCl . 61,0 in water, and add water until...
[References) This question has multiple parts. Work all the parts to get the most points. An...
[References) This question has multiple parts. Work all the parts to get the most points. An energy of 7.0 x 10 J/atom is required to cause a copper atom on a metal surface to lose an electron a Calculate the longest possible wavelength of light that can ionize a copper atom. Wavelength D m Submit Submit Answer Submit Answer T ry Another Version Try Another Version 9 item attempts remaining iom attempts remaining Previous Next
This question has multiple parts. Work all the parts to get the most points. a What...
This question has multiple parts. Work all the parts to get the most points. a What mass of silver chloride can be prepared by the reaction of 240.0 mL of 0.18 M silver nitrate with 240.0 mL of 0.15 M calcium chloride? Mass = 6.2 g Correct b Calculate the concentrations of each ion remaining in solution after precipitation is complete. (If no ions remain, leave the box blank and click on Submit.) Concentration of Agt = Concentration of Cl...
This question has multiple parts. Work all the parts to get the most points. a Consider...
This question has multiple parts. Work all the parts to get the most points. a Consider the reaction: Ca(s) +2 H20(1) - Ca(OH)2(aq) +2H2(g) AH:º(kJ/mol -285.83 -1002.82 S°(J/K) mol 41.59 69.95 -74.5 130.7 What are the values of AH°, ASand AG° AH° kJ/mol AS° = J/K.mol AG° = kJ/mol Submit Submit Answer Try Another Version 6 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. Protein X...
This question has multiple parts. Work all the parts to get the most points. Protein X contains a remarkably long a-helix with 59 residues. a How long is this a-helix (in nm)? (The helix repeats every 0.54 nm (3.6 amino acid residues), and the distance along the helical axis between residues is 0.15 nm.) nm Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. a What...
This question has multiple parts. Work all the parts to get the most points. a What mass of HCl does 1.39 L of 7.50 M HCl solution contain? Mass = g HCI b What mass of NaOH does 11.3 mL of 0.260 M NaOH solution contain? Mass = g NaOH What mass of HNO3 does 251 mL of 1.77 M HNO3 solution contain? Mass = g HNO3 d What mass of CaCl, does 3.65 L of 0.522 M CaCl, solution...
(References) This question has multiple parts. Work all the parts to get the most points. The...
(References) This question has multiple parts. Work all the parts to get the most points. The reaction 2NO() + 2H2(g) → N (9) + 2H20(9) was studied at 904°C, and the data in the table were collected, Reaction Rate of Trial Concentration Appearance of Ne (mol/L) (mol/L-s) [NO] [H.] 1 0.420 0.122 0.136 2 0.210 0.122 0.0339 3 0.210 0.244 0.0678 4 0.106 0.488 0.0339 a which two reaction trials can be used to determine the order of the reaction...
(References This question has multiple parts. Work all the parts to get the most points. Calculate the concentration in %(v/v) of the following solution. a 3.00 x 10°-mL of solution contains 45.7 ml of any soluble liquid solute. Concentration = % (v/v) b 3.0 quarts of acetic acid is put into a 8.0-gallon container, and enough water is added to fill the container Concentration= % (v/v) C A solution of acetone and water is separated by distillation. A 4.00 x...
This question has multiple parts. Work all the parts to get the most points How many molecules are in each of the following? a 3.5 mol of TNT, C7H3N306 molecules (b one drop (0.0500 g) of water molecules C 3.9 x 10 g of aspirin, Cg HgO4 molecules Try Another Version 10 item attempts remaining Submit Answer Ethyl chloride is prepared by the reaction of chlorine with ethane according to the following balanced equation C2He(g)+Cl2(g) Ethane C2H5CI()+HCI(g) Ethyl chloride When...
so locator assignment-take References This question has multiple parts. Work all the parts to get the most points. You require 34.45 mL of 0.0105 M HCl to reach the equivalence point in the titration of 25.0 ml. of aqueous ammonia a What was the concentration of NH, in the original ammonia solution? Concentration Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. How would you prepare 1.10 L of a 0.70-M solution of each of the following? a H, SO Dilute from "concentrated" (18 M ) sulfuric acid m L of concentrated H2SO4 pt 1 pt b HCl from concentrated" (12 M) reagent 1 pt Dilute mL of concentrated HCI NICI, from the salt NiCl 64,0 Dissolve g of NiCl . 61,0 in water, and add water until...
[References) This question has multiple parts. Work all the parts to get the most points. An energy of 7.0 x 10 J/atom is required to cause a copper atom on a metal surface to lose an electron a Calculate the longest possible wavelength of light that can ionize a copper atom. Wavelength D m Submit Submit Answer Submit Answer T ry Another Version Try Another Version 9 item attempts remaining iom attempts remaining Previous Next
This question has multiple parts. Work all the parts to get the most points. a What mass of silver chloride can be prepared by the reaction of 240.0 mL of 0.18 M silver nitrate with 240.0 mL of 0.15 M calcium chloride? Mass = 6.2 g Correct b Calculate the concentrations of each ion remaining in solution after precipitation is complete. (If no ions remain, leave the box blank and click on Submit.) Concentration of Agt = Concentration of Cl...
This question has multiple parts. Work all the parts to get the most points. a Consider the reaction: Ca(s) +2 H20(1) - Ca(OH)2(aq) +2H2(g) AH:º(kJ/mol -285.83 -1002.82 S°(J/K) mol 41.59 69.95 -74.5 130.7 What are the values of AH°, ASand AG° AH° kJ/mol AS° = J/K.mol AG° = kJ/mol Submit Submit Answer Try Another Version 6 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. Protein X contains a remarkably long a-helix with 59 residues. a How long is this a-helix (in nm)? (The helix repeats every 0.54 nm (3.6 amino acid residues), and the distance along the helical axis between residues is 0.15 nm.) nm Submit Submit Answer Try Another Version 10 item attempts remaining
This question has multiple parts. Work all the parts to get the most points. a What mass of HCl does 1.39 L of 7.50 M HCl solution contain? Mass = g HCI b What mass of NaOH does 11.3 mL of 0.260 M NaOH solution contain? Mass = g NaOH What mass of HNO3 does 251 mL of 1.77 M HNO3 solution contain? Mass = g HNO3 d What mass of CaCl, does 3.65 L of 0.522 M CaCl, solution...
(References) This question has multiple parts. Work all the parts to get the most points. The reaction 2NO() + 2H2(g) → N (9) + 2H20(9) was studied at 904°C, and the data in the table were collected, Reaction Rate of Trial Concentration Appearance of Ne (mol/L) (mol/L-s) [NO] [H.] 1 0.420 0.122 0.136 2 0.210 0.122 0.0339 3 0.210 0.244 0.0678 4 0.106 0.488 0.0339 a which two reaction trials can be used to determine the order of the reaction...
Most questions answered within 3 hours.
-
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 44 minutes ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 46 minutes ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 52 minutes ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 56 minutes 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 1 hour ago -
(As soon as possible) Balance each of the following equations
according to the half-reaction method:
H2O2(aq)...
asked 1 hour ago -
A thin rod with a mass of 3.5kg and a length L=1.5 m is oriented
horizontally....
asked 1 hour ago -
Inheritance pattern in BRCA 1
Describe the inheritance pattern of BRCA 1 Is it recessive or...
asked 1 hour ago