A student listed the characteristics of chemical and nuclear reactions,
Chemical and Nuclear Reactions
Which of these statements best explains the identity of Reaction D?
- it is a nuclear reaction because the atomic number remains the same when the number of valence electrons changes
- It is a nuclear reaction because the atomic number remains the same when the particles are emitted from the nucleus.
- It is a chemical reaction because the atomic number remains the same when the number of neutrons and protons changes
- It is a chemical reaction because the atomic number remains the same for all elements while a rearrangement of atoms through bonding occurs.
Answers: 2
Chemistry, 22.06.2019 14:00
The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.
Answers: 3
Chemistry, 22.06.2019 23:00
Condensation happens when water vapor cools. true or false? ?
Answers: 2
A student listed the characteristics of chemical and nuclear reactions,
Chemical and Nuclear Reacti...
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