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 3843 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?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

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?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Generally, the total tax burden in the United States is much lower than that of other industrialize Generally, the total tax burden in the United States is much lower than that of other industrialize
The opening and closing of voltage-activated sodium and potassium channels during the three phases ... The opening and closing of voltage-activated sodium and potassium channels during the three phases ...
Basic sliding effleurage to the lower leg. Apply from heel of foot to knee. Conform hands to contour ... Basic sliding effleurage to the lower leg. Apply from heel of foot to knee. Conform hands to contour ...
The Upper (A) and Lower (B) Respiratory Tracts (2 of 2) The Upper (A) and Lower (B) Respiratory Tracts (2 of 2)
How many anions are in 10.0 g of sodium phosphate? How many anions are in 10.0 g of sodium phosphate?
Video: ATPase function - membrane transport, contractile proteins and synthesis

For a complete list of videos, visit our video library