Mass of coin = ± g
Density of single coin using Mathematical Equation
Diameter (d) :...
Mass of coin = ± g
Density of single coin using Mathematical Equation
Diameter (d) : cm
Absolute Uncertainty
Relative Uncertainty
Thickness (h) : cm
Volume(show calculation)
V =
(show calculation)
Density
Mass of coin = ± g
Density of single coin using Mathematical Equation
Diameter (d) : cm
Absolute Uncertainty
Relative Uncertainty
Thickness (h) : cm
Volume(show calculation)
V =
(show calculation)
Density
Answers: 3
Chemistry, 22.06.2019 03:30
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.
Answers: 2
Chemistry, 22.06.2019 09:00
Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?
Answers: 1
Chemistry, 22.06.2019 18:00
Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.
Answers: 3
Chemistry, 22.06.2019 19:00
Sum of brother and sisters age is 26. four times the brothers age is subtracted from three times the sisters age, the difference is 8. what are the ages of the brother and sister?
Answers: 1
Spanish, 16.11.2020 20:10
History, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
History, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
Physics, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
Chemistry, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
Mathematics, 16.11.2020 20:10
Arts, 16.11.2020 20:10