Answers: 2
Chemistry, 21.06.2019 23:30
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.
Answers: 2
Chemistry, 22.06.2019 09:00
Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
Answers: 3
Chemistry, 22.06.2019 13:00
One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.
Answers: 1
Sometimes human waste makes its way in waterways. How does this negatively impact aquatic environmen...
Mathematics, 26.03.2021 17:50
History, 26.03.2021 17:50
English, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50
English, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50
English, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50
Chemistry, 26.03.2021 17:50
Mathematics, 26.03.2021 17:50