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 3971 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?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Vertebral compression Fractures of the spine (vertebra) can cause severe ”band-like” pain that radia Vertebral compression Fractures of the spine (vertebra) can cause severe ”band-like” pain that radia
Becoming a Certified Medical Assistant may demonstrate your commitment to the profession and the con Becoming a Certified Medical Assistant may demonstrate your commitment to the profession and the con
Knead accessible lower leg muscles; alternate with effleurage. Knead accessible lower leg muscles; alternate with effleurage.
Sodium has a strong reaction to water Sodium has a strong reaction to water
Anterior & Posterior View of Lower Limb (Extremity) Anterior & Posterior View of Lower Limb (Extremity)
How to calculate the DRT to determine which is more effective against the pathogen How to calculate the DRT to determine which is more effective against the pathogen
Video: Acid-base imbalances - compensation of metabolic acidosis and alkalosis

For a complete list of videos, visit our video library