Chemistry, 07.01.2021 01:40 logan12345677885675
14)
Scientists use the emission spectra of elements to detect
A)
explosives in luggage.
B)
cracks in support structures, like bridges.
0)
the possibility of an earthquake occurrence.
D)
elements in clouds of gas and dust in deep space
Answers: 3
Chemistry, 22.06.2019 08:30
7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 ā 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 ā 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100ā°c, how much steam at 100ā°c is produced? show all calculations leading to an answer. 10. the freezing of water at 0ā°c can be represented as follows: h2o (l) ā h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 ā 4 sentences explain why applying pressure causes ice to melt.
Answers: 1
Chemistry, 22.06.2019 09:30
1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earthās climate system. (a) the water cycle (b) the carbon cycle
Answers: 1
Chemistry, 22.06.2019 14:00
In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2
Answers: 1
Chemistry, 22.06.2019 20:00
Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radicalāradical combination reaction is the formation of a new electronāpair bond. consider the chemical equation. n(g)+no(g)ā¶nno(g) n(g)+no(g)ā¶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)
Answers: 1
14)
Scientists use the emission spectra of elements to detect
A)
explosives in luggage....
A)
explosives in luggage....
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