Chemistry, 30.09.2019 17:00 hnsanders00
Iron has a density of 7.86 g/cm3 (1 cm3=1 ml). calculate the volume (in dl) of a piece of iron having a mass of 3.93 kg . note that the density is provided in different units of volume and mass than the desired units of volume (dl) and the given units of mass (kg). you will need to express the density in kg/dl (1 cm3 = 1 ml) before calculating the volume for the piece of iron.
Answers: 1
Chemistry, 22.06.2019 04:00, mgnbrnne
Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.
Answers: 2
Chemistry, 22.06.2019 06:00, coolkid2041
One does not belong why? ice, gold ,wood ,diamond and table salt
Answers: 1
Iron has a density of 7.86 g/cm3 (1 cm3=1 ml). calculate the volume (in dl) of a piece of iron havin...
History, 10.11.2020 17:00