User Account

All Pages

Water in a coffee-cup calorimeter

Assignment Help Chemistry
Reference no: EM131877807

When 19 g KOH is dissolved in 97.1 g of water in a coffee-cup calorimeter, the temperature rises from 18.1 °C to 33.81 °C. What is the enthalpy change per gram (in J/g) of KOH dissolved in the water? Assume that the solution has a specific heat capacity of 4.18 J/g×K. Water has a density of 1.00 g/ml. Be sure to enter the correct sign (+/-). Enter to 1 decimal place.

Reference no: EM131877807

Questions Cloud

Calculate the standard enthalpy of formation : The explosive nitroglycerin (C3H5N3O9) decomposes rapidly upon ignition or sudden impact according to the following balanced equation:
What must HR do to overcome the challenge : Describe three HR challenges and identify the one that you believe is most critical for HR to address.
Find two web sites that use poor web design practices : Find two Web sites that use poor Web design practices. Write a one-page report that includes an introduction about design practices not followed at Web sites.
Who suffers the loss on each check : Nick steals two checks from Pauline-a blank check and a check payable to the order of Retail Outlets Company, drawn on Pauline's account with State Bank.
Water in a coffee-cup calorimeter : When 19 g KOH is dissolved in 97.1 g of water in a coffee-cup calorimeter, the temperature rises from 18.1 °C to 33.81 °C.
Show the impact on net income for the quarter ended june : Show the impact on net income for the quarter ended June 30 and the quarter ended September 30. Also, show the impact the impact on income for both quarters
Calculate the change in enthalpy : Calculate the change in enthalpy, ? H, of the reaction (in kJ/mol) of water formed. Enter the appropriate sign (+/-). Enter to 1 decimal place.
Discuss hr role in building and managing global enterprise : Consider the HR policies needed to support a global workforce and explain how HR policy can support a global strategy. Substantiate your perspective.
How individuals react differently to the change process : Describe how individuals react differently to the change process. Why do you suppose these differences occur?

Reviews

Write a Review

Chemistry Questions & Answers

  Find the volume of methane measure

The heat of combustion of CH4 is 890.4 kJ/mol and the heat capacity of H2O is 75.2 J/mol×K. Find the volume of methane measured at 298 K and 0.790atm required to convert 1.33L of water at 298 K to water vapor at 373 K.

  Explain the magnesium weighing 355g in a sample of water

The magnesium weighing 355g in a sample of water is first converted to MgNH4PO4 and then to Mg2P2O7. The mass of Mg2P2O7 obtained is 0.0870g. Express the quantity of magnesium in the mineral water in parts per million (that is, in g Mg per 10^6 g ..

  Explain what is the total pressure in flask with moles of h2

What is the total pressure in a 20.0 L flask 20.0°C, which contains 0.127 moles of H2 and 0.288 moles of N2?

  How many grams of total blood cholesterol

individual suffering from a high cholesterol level in her blood has 239 of cholesterol per 100 of blood. If the total blood volume of the individual is 5.4 , how many grams of total blood cholesterol does the individual's body contain?

  Explain what are the h3o^+ and oh^-

what are the [H3O^+] and OH^-] for a solution with each of the following pH values? a)10.0 b)5.0 c)6.5 d)1.82

  Explain the normal boiling point of a liquid

Define the normal boiling point of a liquid. Explain why atmospheric pressure affects boiling points of liquids.

  Explicate why the gem-dimethyl groups emerge

Explicate why the gem-dimethyl groups emerge as separate peaks in the proton NMR spectrum of isoborneolwhile they are an unresolved singlet in borneol.

  State sodium borohydride in ethanol

After the Ketone react with sodium borohydride in ethanol. HCl be added dropwise, and then remove the ethanol by distillation, then add DCM and ice water.

  Explain what is the solubility of m(oh)2

What is the solubility of M(OH)2 (Ksp = 3.2e-13) in a solution buffered at pH = 9.84 solubility = M

  What mass of the gas dissolves in water

at 25 C and 1.0 atm, .25 g of a gas dissolves in 1.00L of water. what mass of the gas dissolves in 1.00L of water at 25C and 3.0 atm

  Explain the boiling point of the water-ethylene glycol

How many liters of antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator containing 6.50 liters of water if the coldest winter temperature is -40.0C. Calculate the boiling point of this water-ethylene glycol mixture.

  State the lewis symbol

Which of the following elements has the Lewis symbol below, where Sy represents the elemental symbol? Sy :

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd