Chemistry, 02.01.2020 11:31 shyannehamilton1183
Which of these pairs of elements have the same number of valence electrons?
oxygen (o) and bromine (br)
selenium (se) and bromine (br)
carbon (c) and lead (pb)
oxygen (o) and carbon (c)
sodium (na) and magnesium (mg)
Answers: 2
Chemistry, 22.06.2019 08:30
Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
Answers: 1
Chemistry, 22.06.2019 22:30
Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt
Answers: 1
Chemistry, 22.06.2019 22:40
Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent
Answers: 1
Which of these pairs of elements have the same number of valence electrons?
oxygen (o) and br...
oxygen (o) and br...
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