subject
Chemistry, 09.02.2021 22:30 amp46

What is the atomic number for an element whose mass number is 78 and contains 47 neutrons?

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 09:00
Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.
Answers: 3
question
Chemistry, 22.06.2019 13:00
Tell me the iupac names of the following alcohols:
Answers: 2
question
Chemistry, 22.06.2019 15:40
Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n
Answers: 2
question
Chemistry, 23.06.2019 01:00
Na chemical reaction, activation energy increases the of the reactants. this outcome causes the particles to collide, which results in the of new products.
Answers: 2
You know the right answer?
What is the atomic number for an element whose mass number is 78 and contains 47 neutrons?...
Questions
question
Mathematics, 20.06.2021 02:20
question
Mathematics, 20.06.2021 02:20
question
Mathematics, 20.06.2021 02:30
question
Mathematics, 20.06.2021 02:30
question
Mathematics, 20.06.2021 02:30
question
Business, 20.06.2021 02:30
question
Mathematics, 20.06.2021 02:30
question
Mathematics, 20.06.2021 02:30
Questions on the website: 13722360