Answers: 2
Chemistry, 22.06.2019 08:30
Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size
Answers: 1
Chemistry, 22.06.2019 20:00
Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61
Answers: 2
Chemistry, 22.06.2019 23:10
Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.
Answers: 3
How many formula units of sodium chloride are in 45.1 grams of sodium chloride? the molar mass of s...
History, 11.10.2019 06:00
Physics, 11.10.2019 06:00
Mathematics, 11.10.2019 06:00
Mathematics, 11.10.2019 06:00
Social Studies, 11.10.2019 06:00
English, 11.10.2019 06:00
Physics, 11.10.2019 06:00
Business, 11.10.2019 06:00
Chemistry, 11.10.2019 06:00
English, 11.10.2019 06:00
Mathematics, 11.10.2019 06:00