A student mixes two water solutions with an initial temperature of 25.0°C
to form a final solu...
Chemistry, 04.05.2020 22:32 jillianbarnes2565
A student mixes two water solutions with an initial temperature of 25.0°C
to form a final solution with a mass of 65.0 g at 30.0°C. What is the heat
change, in kJ, for this reaction?
325 kJ
272 kJ
1.36 kJ
1.95 kJ
Answers: 2
Chemistry, 22.06.2019 06:00
There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit
Answers: 1
Chemistry, 22.06.2019 11:20
Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.
Answers: 2
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Biology, 13.11.2020 19:50
Mathematics, 13.11.2020 19:50
Mathematics, 13.11.2020 19:50
Arts, 13.11.2020 19:50
History, 13.11.2020 19:50
Chemistry, 13.11.2020 19:50
Advanced Placement (AP), 13.11.2020 19:50
Geography, 13.11.2020 19:50