Physics, 24.07.2019 22:30 christopherarreola56
A0.1375-g sample of magnesium is burned in a constant-volume bomb calorimeter that has a heat capacity of 1769 j 0 c-1. the calorimeter contains exactly 300 g of water, and the temperature increases by l.1 26°c. calculate the heat given off by the burning magnesium, in kj g-1 and in kj moj-1
Answers: 3
Physics, 22.06.2019 16:40
The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?
Answers: 1
Physics, 22.06.2019 21:50
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
Physics, 23.06.2019 00:00
Abus travels 280km south along a straight path with an average velocity of 88km/h to the south. the bus stops for 24 min, then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last?
Answers: 1
A0.1375-g sample of magnesium is burned in a constant-volume bomb calorimeter that has a heat capaci...
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