Hunter wants to measure the weight of a dumbbell. he should
a. use a beaker with water and record the weight in n.
b. use a scale and record the weight in cm.
c. use a beaker with water and record the weight in cm.
d. use a scale and record the weight in n.

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.