Positive number in units of joules

Assignment Help Chemistry
Reference no: EM13693301

What is the heat, q, of a 12.5 g block of copper with an initial temperature of 19 °C and a final temperature of 68 °C? Express answer to 3 significant figures as a positive number in units of Joules.

Reference no: EM13693301

Questions Cloud

Find the currents in each component of circuit : Calculate the output voltage (Vo) and the attenuator input voltage (V,) - The attenuation expressed in decibels and find the currents in each component of circuit 1.
Discuss and analyse the group task performance : Discuss and analyse the group task performance and evaluate the overall efficiency of the group in terms of the communication, leadership and decision making; and
Heat energy upon condensation : The standard molar heat of vaporization of her water is 40.79 kJ per mole. What mass of mass of steam is required to release 500 kilojoules of heat energy upon condensation?
2012 olympic games - was this a successful project : Read about the 2012 Olympic Games  - Was this a successful project and Were there any drawbacks?
Positive number in units of joules : Positive number in units of Joules.
Carry out to test the hypothesis : Design an experiment you could carry out to test the hypothesis
Calculate the full-load torque and the armature back emf : Calculate the full-load torque and the armature back emf and determine the full-load current drawn from the source.
How old is a bottle of wine : For half life problems how would you solve this. How old is a bottle of wine if the tritium (h-3) activity is 25% that of the new wine (h-3 half life =12.3 years)?
The aldehyde faster than the grignard reagent : Vitride reduced the aldehyde faster than the Grignard reagent, and also assuming the reduced aldehyde acted just like your desired product during the isolation of 2-methyl-3-heptanol, what is the mass percent of the reduced aldehyde in your pro..

Reviews

Write a Review

Chemistry Questions & Answers

  Describe the rate law for the reaction

The rate law for the reaction, 2NO(g) + O2(g)  2NO2(g), is found to be: rate of reaction = k [?NO]2?[O2?]2. The first, fast step is 2NO(g)  N2O2 (g)

  Explain what is the percent chlorine in chlorofluorocarbon

A 2.95 -g sample of an unknown chlorofluorocarbon is decomposed and produces 585ml of chlorine gas at a pressure of 748 mmHg and a temperature of 298K.

  What is the maximum kinetic energy of an ejected electron

what is the maximum kinetic energy of an ejected electron if platinum metal is irradiated with 174-nm light? the

  Explain reactions and their associated equilibrium constants

Consider the following reactions and their associated equilibrium constants: A + 2B ~~~> C K1 C ~~~> D + E K2 For the reaction A + 2B ? D + E, having equilibrium constant Kc, A) Kc = K1 + K2 D) Kc = (K1)(K2) B) Kc = K1/K2 E) Kc = K2/K1 C) Kc = K1 ..

  Explain what is the ph of the solution trisodium

Explain what is the pH of the solution when 18.30 mL of 0.137 M trisodium hemimellitalate (trisodium benzene 1,2,3, tricarobxylate) is mixed with 25.00mL of 0.274 M HNO3 (to two d.p.)

  Define what is the partial pressure of co

A mixture of 0.146 moles of C is reacted with 0.117 moles of O2 in a sealed 10 L vessel at 500 K producing a mixture of CO and CO2. Explain the total pressure is 0.6797 atm. Define what is the partial pressure of CO

  Explain drug companies to discover lead compounds

List and describe briefly the 2 methods which are used by drug companies to discover lead compounds

  Calculate the ph of a buffer made with 050m phosphoric acid

calculate the ph of a buffer made with 0.50m phosphoric acid and 0.75m sodium dihydrogen phosphate. ka 7.5 x

  Define what is the molar mass of the compound

When 0.200g of a high-molecular-weight compound is dissolved in water to form 12.5mL of solution at 25 degrees celsius, the osmotic pressure of the solution is found to be 1.10x10^-3 atm. What is the molar mass of the compound

  How much energy is required to heat 55.0 grams of water

at 1 atm, how much energy is required to heat 55.0 grams of water at -24.0 degrees Celsius to water at 157.0 degrees Celsius

  To what volume would the air in her lungs expand

A scuba diver with a lung capacity of 5.2 L inhales a lungful of air at a depth of 45 m and a pressure of 5.5 atm. If the diver were to ascend to the surface (where the pressure is 1.0 atm) while holding her breath.

  Explain what is the mass/volume percent of this solution

A 50.0 mL glucose solution contains 3.00 g of glucose. What is the mass/volume percent of this solution

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!

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