Chemistry, 05.02.2020 13:45 broomssymphonie
Sometimes, based on the electron configurations of the elements involved, a possible chemical formula for a compound can be predicted. elements a ([core]ns2) and b ([core]ns2np5) react to form ionic compound axby. select the false statement below :
a) element a serves as the reducing agent in the reaction to form axby
b)the x and y in axby must reflect the lowest whole number ratio of moles of a to moles of b
c)x + y = 3
d)the first ionization energy (ie1) of b is most probably lower than the first ionization energy (ie1) of a
e)the b in axby has a −1 oxidation state
Answers: 3
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
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Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
Answers: 2
Sometimes, based on the electron configurations of the elements involved, a possible chemical formul...
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