This topic contains a solution. Click here to go to the answer
« previous next »
Pages: 1 2 3  All   Go Down

Author Question: Calculate the mass of sodium cyanate (NaOCN, molar mass = 65.0066 g mol-1) required to lower the ... (Read 3963 times)

altibaby

  • Hero Member
  • *****
  • Posts: 562
on: Nov 18, 2019

Question 1

Calculate the mass of NH4ClO4, molar mass = 117.49 g mol-1, required to create a temperature change of -1.0 °C in a coffee cup calorimeter containing 115 mL of water. The enthalpy of solution for NH4ClO4 is 33.47 kJ mol-1. The specific heat of water is 4.184 J g-1 °C-1, and assume the density of the solution is 1.00 g mL-1.
◦ 4.0 g
◦ 0.83 g
◦ 2.8 g
◦ 1.7 g
◦ 3.2 g

Question 2

Calculate the mass of sodium cyanate (NaOCN, molar mass = 65.0066 g mol-1) required to lower the temperature from 24.1 °C to 23.0 °C in a coffee cup calorimeter containing 98 mL of water. The enthalpy of solution for NaOCN is 19.20 kJ mol-1. The specific heat of water is 4.184 J g-1 °C-1 and assume the density of the solution is 1.00 g mL-1.
◦ 3.8 g
◦ 1.5 g
◦ 4.8 g
◦ 0.75 g
◦ 1.1 g
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by altibaby on Nov 18, 2019

Koolkid240

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 35% of students answer this correctly


Abuel Adho

  • Newbie
  • *
  • Posts: 1
Reply #2 on: Feb 3, 2020
Thank you!


Yiru Zhao

  • Newbie
  • *
  • Posts: 1
Reply #3 on: Feb 3, 2020
Thank You


just a tree

  • Newbie
  • *
  • Posts: 1
Reply #4 on: Sep 25, 2020
thank you


Jay Paws

  • Newbie
  • *
  • Posts: 1
Reply #5 on: Sep 25, 2020
Thank you!


Brennan Cowley Adam

  • Newbie
  • *
  • Posts: 1
Reply #6 on: Sep 25, 2020
Thank you


jw s

  • Newbie
  • *
  • Posts: 1
Reply #7 on: Feb 2, 2021
Thank you!


lydellson

  • Newbie
  • *
  • Posts: 1
Reply #8 on: Jun 16, 2021
thank you !


james_szy

  • Newbie
  • *
  • Posts: 2
Reply #9 on: Sep 30, 2021
thank you


Pages: 1 2 3  All   Go Up
« previous next »
 

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Pott’s Occurs at the ankle and affects both bones of the lower leg (fibula and tibia) Pott’s Occurs at the ankle and affects both bones of the lower leg (fibula and tibia)
An “Intermediate-Mass” Black Hole An “Intermediate-Mass” Black Hole
Instilling an eye ointment into the lower conjunctival sac Instilling an eye ointment into the lower conjunctival sac
Air-mass thunderstorms—mT air masses Air-mass thunderstorms—mT air masses
How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree? How to calculate the gain and loss gene numbers with low bootstrap of phylogenetic tree?
Gray Morris's Calculate with Confidence, Canadian Edition, 2nd Edition Gray Morris's Calculate with Confidence, Canadian Edition, 2nd Edition
Video: Random alignment at Metaphase I Animation

For a complete list of videos, visit our video library