The student wants to use nails made of different metals to see which type of nail makes the best electromagnet.
Which investigation should the student perform to determine which type
of nail makes the strongest electromagnet?
Oь
Ос
Od
Wrap each type of nail with a different number of coils of the same type of wire and record how many paper clips each nail picks
up.
Wrap each type of nail with 40 coils of the same type of wire and record how many paper clips each nail picks up.
Wrap as many coils as possible around each type of nail and record which type of nail can hold the most coils.
Wrap each type of nail with a different type of wire and record how many paper clips each nail picks up.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph