Part C the energy lost when 74.5 g of water cools from 86.4 C to 4.7...

Question

Question

science chemistry

Answer 1

Answer #1

q = mC $\Delta$ T

m = 74.5 g

C = 4.18 J/g⁰C

$\Delta$ T = 86.4 - 4.7 = 81.7

q = 74.5 x 4.18 x 81.7

q = 25442.2 J

answer = 25442.2 J

Answer 2

Similar Homework Help Questions

joules lost when 78.1 g of water cools from 86.4∘C to 3.6 ∘C

joules lost when 78.1 g of water cools from 86.4∘C to 3.6 ∘C
Part A Find the excitation energy from the ground level to the third excited level for...

Part A Find the excitation energy from the ground level to the third excited level for an electron confined to a box that has a width of 0.127 nm ΔΕ : SubmitP X Incorrect; Try Again; 5 attempts remaining Part B The electron makes a transition from the n-1 to n-4 level by absorbing a photon. Calculate the wavelength of this photon SubmitPr Previous Answers Request Answer
use the heat equation to calculate the energy in joules and calories for each of the...

use the heat equation to calculate the energy in joules and calories for each of the following. A lost when 75.8g of water cools from 86.4°c to 3.1°c. B Lost when 75.8 g of water cools from 86.4°c to 3.1°c

what is the total energy in MeV, of ( previous answers of 453.27 for part 1,...

what is the total energy in MeV, of ( previous answers of 453.27 for part 1, and 0.247 for part two were incorrect) A proton traveling at 98.3 % of the speed of light? ΠΙ ΑΣφ. ? Ер MeV O You have already submitted this answer. Enter a new answer. No credit lost. Try again. An electron traveling at 98.3 % of the speed of light? IVO AXO ? E = 0.247 MeV Submit Previous Answers Request Answer X Incorrect;...
2. Calculate the heat (in calories) lost by 115 g of water as it cools from...

2. Calculate the heat (in calories) lost by 115 g of water as it cools from 91.4 °C to 15.4 °C.
▼ Part A What is the period of a simple pendulum 70 cm long on the...

▼ Part A What is the period of a simple pendulum 70 cm long on the Earth? Express your answer using two significant figures. If there is no answer, enter none. SubmitP Previous Answers Request Answer X Incorrect: Try Again; 2 attempts remaining Part B at is the period of a simple pendulum 80 <cm long when it is in a freely falling elevator? Express your answer using two significant tigures. It there is no answer, enter none.

Calculate energy in joules and calories, when 15.0g of ethanol is lost, C2H6O,cools from 60.5 to...

Calculate energy in joules and calories, when 15.0g of ethanol is lost, C2H6O,cools from 60.5 to 42.0 ,Ethanol has 0.588cal/g degree Celsius and 2.46j/g degree Celsius
Review Periodic Table Constants Part A A coffee-cup calorimeter contains 130.0 g of water at 25.3...

Review Periodic Table Constants Part A A coffee-cup calorimeter contains 130.0 g of water at 25.3 C.A 122.0-g block of copper metal is Determine the amount of heat, n J, lost by the copper block. 100 4°C by putting it in a beaker of Cu(s) is 0.385 heated boiling water The specific heat J/g K. The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30.2 ΠνΠ ΑΣφ. ?...
Part A What wil be the equilbrium temperature when a 275 g block of copper at...

Part A What wil be the equilbrium temperature when a 275 g block of copper at 255 Cis placed in a 155 g aluminum calonmeter cup containing 855 g of water at 14.0 C Express your answer using three significant figures. ? T6,84 C Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback Next > The value of specific heat for copper is 390 J/kg C, for aluminun is 900 J/kg C, and for water...

need A & C Part A Calculate the volume of 1.32 mol of liquid water at a temperature of 20 °C (at which its den...

need A & C Part A Calculate the volume of 1.32 mol of liquid water at a temperature of 20 °C (at which its density is 998 kg/m?) Express your answer in meters cubed. 10 AED O ? 24.11 Submit Previous Answers Request Answer * Incorrect; Try Again: 4 attempts remaining Part B Calculate the volume occupied by 1 32 mol of steam at 200 "C. Assume the steam is at atmospheric pressure and can be treated as an ideal...