![miajacobs110](/avatars/3153.jpg)
miajacobs110
24.09.2019 •
Chemistry
How many joules are required to change 1kg of ice at-10°c to water at 15°c?
Solved
Show answers
More tips
- C Computers and Internet Connecting Your TV to Your Computer: Easy and Fast...
- L Leisure and Entertainment How to Make a Crab Trap in Just a Few Minutes...
- H Health and Medicine How Much Does Abortion Cost? Expert Answers and Insights...
- S Sport How to Build Arm Muscles? Effective Exercises and Tips...
- H Health and Medicine When can it be said that a person has a normal pulse?...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
Answers on questions: Chemistry
- C Chemistry I need help can someone help me out I need the answer According to Le Chatelier s principle, how will a pressure increase affect a gaseous system in equilibrium? A....
- C Chemistry Help me please!! A tratar of Water (20°C) is placed in the freezer and turns into ice cubes (-8 °C)- IN to the system- OUT the system - No energy is flowing...
- C Chemistry 50 cm³ of 2.5 Moldovan-3 hydrochloric acid was placed in a polystyrene beaker of negative will heat capacity its temperature was recorded and then 50 cm³ of 2.50 Moldm-3...
- C Chemistry Cine vrea iubit, 14 ani, iubitor si amuzant?...
- C Chemistry Carbon dioxide is used by plants for ___?...
- C Chemistry At equilibrium, a sample of gas from the system is collected into a 4.00 L flask at 600 K. The flask is found to contain 3.86 g of PCl₅, 12.7 g of PCl₃, and 13.3 g of...
- M Mathematics Find the least number which when increased by 15 is exactly divisible by 15, 35and 48....
- W World Languages In care crengile pomilor pareau raze de luna functia sintactica si valoarea morfologica...
- M Mathematics Abasketball player shot 13 out of 52 free throws what is the percent he made/missed? ( explain how you did it)...
- B Biology What did garrod mean by inborn errors of metabolism?...
Ответ:
Explanation:
There are three heat transfers in this process:
Total heat = warming the ice + melting the ice + warming the water
q = q₁ + q₂ + q₃
q = mC₁ΔT₁ + mΔHfus + mC₂ΔT₂
Let's calculate these heat transfers separately.
Data:
m = 1 kg = 1000 g
C₁ = 2.108 J·°C⁻¹g⁻¹
C₂ = 4.184 J·°C⁻¹g⁻¹
ΔHfus = 333 J/g
Tmax = 15 °C
m.p. = 0 °C
Tmin = -10 °C
Calculations:
ΔT₁ = 0 – (-10) = 10 °C
q₁ = 1000 × 2.108 × 10 = 21 080J = 21.08 kJ
q₂ = 1000 × 333 = 333 000 J =333 kJ
ΔT₂ = 15 - 0 = 15 °C
q₃ = 1000 × 4.184 × 15 = 62 760 J = 62.76 kJ
q = 21.08 + 333 + 62.76 = 417 kJ
You must add
.
Ответ: