A piece of unknown metal with mass 68.6 g is heated to an initial temperature of 100 °C and dropped into 84 g of water (with an initial temperature of 20 °C) in a calorimeter. The final temperature of the system is 52.1°C. The specific heat of water is 4.184 J/g*⁰C. What is the specific heat of the metal? 3.433 0.171 1.717 0.343
Answers: 1
Chemistry, 22.06.2019 20:10
The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)
Answers: 3
Chemistry, 23.06.2019 09:30
The mass of a proton is approximately equal to the mass of
Answers: 1
Chemistry, 23.06.2019 10:30
Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.
Answers: 1
A piece of unknown metal with mass 68.6 g is heated to an initial temperature of 100 °C and dropped...
English, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
English, 02.01.2020 22:31
History, 02.01.2020 22:31
History, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
Mathematics, 02.01.2020 22:31
Biology, 02.01.2020 22:31