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 3978 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?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ... Gradient Flow:Upper air moving from areas of higher pressure to areas of lower pressure undergo ...
Air Mass Thunderstorms Air Mass Thunderstorms
How to calculate mortgage payments (Question 1 of 2) How to calculate mortgage payments (Question 1 of 2)
Sodium’s chief role is regulation of fluid balance Sodium’s chief role is regulation of fluid balance
. Calculate the net electric field at point B . Calculate the net electric field at point B
Calculate the pH of a solution formed by mixing 120.0 mL of 0.30 M HClO with 1180.0 mL of 0.20 ... Calculate the pH of a solution formed by mixing 120.0 mL of 0.30 M HClO with 1180.0 mL of 0.20 ...
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library