Zachgrainger4436
02.12.2020 •
Chemistry
4. How many grams of water can be taken from -20 °C to 115 °C by burning 320 g of propane (C3H8)? Assume that all the energy of combustion goes into water and the heat of combustion for propane is 2220 kJ/mol. Please show the order of equations
Solved
Show answers
More tips
- S Society and Politics Secrets of NATO: Which Countries are Part of the Alliance?...
- H Health and Medicine Is Massage Necessary? Facts and Opinions...
- C Computers and Internet Clearing Cache: How to Speed Up Your Browser...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Chemistry
- C Chemistry Which explains the information needed to calculate speed and velocity...
- C Chemistry With the transition metals, the sum of the outer d and s electrons gives what information?...
- C Chemistry Which term describes the number of waves that pass a given point in a given time...
- C Chemistry 2 points is the weighted average mass of all the known isotopes for an element.* electron cloud isotopes average atomic mass quarks nucleus period mass number...
- C Chemistry Describe the relative orientations of the orbitals related to an atom s 2p sublevel....
- C Chemistry Write an equation that represents the action in water of diethylamine ((ch3ch2)2nh) as a brønsted–lowry base...
- C Chemistry Heating most solids sufficiently turning the solid into a liquid....
- C Chemistry Draw the structural formula of 4,5-diisopropylnonane....
- C Chemistry 2. What do you think a scientist should do if they discover an interesting pattern in the world that no one else has described, but they cannot explain what is causing...
- C Chemistry This is the Three Gorges Dam, a hydroelectric gravity dam that spans the Yangtze River in China. Which of these is a function of dams in the water control system?...
Ответ:
answer:
explanation:
in 1943, the content of the coin was changed to zinc coated steel because of the copper shortage during world war ii. then after 1982, the compostion was 97.6% zinc, and 2.4% copper. so this means that the pennies made before 1982 will have a different mass from those made after 1982.