Chemistry, 29.08.2019 19:30 pinapunapula
Which of the following statements are correct? rewrite the incorrect statements to correct them.
a) the atomic number always equals the number of protons.
b) the atomic mass can be smaller that the atomic number.
c) the mass number of an atom can be equal to the atomic number.
d) the number of protons always equals he number of neutrons in an atom.
e) the number of protons always equals the number of electrons in an atom.
f) if the number of protons in an atom were changed, it would be a different element.
Answers: 1
Chemistry, 22.06.2019 11:00
The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.
Answers: 1
Chemistry, 22.06.2019 15:00
Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.
Answers: 2
Chemistry, 22.06.2019 18:00
Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?
Answers: 2
Chemistry, 22.06.2019 20:30
From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.
Answers: 2
Which of the following statements are correct? rewrite the incorrect statements to correct them.
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