Hello!
To do this, use the molar mass. This is how much a mole of an atom weighs. A mole is 6.02214076×10²³ atoms.
Molar masses of:
Se: 78.96 g/mol
Cu: 63.546 g/mol
Ba: 137.327 g/mol
Now, the element with the highest molar mass will have the fewest atoms. This is because the element weighs more, so therefore for the same amount of mass, there will be less of the element needed to reach that mass.
Therefore, 10g of Ba would have the fewest number of atoms.
Hope this helps!
Answer: 1.01 x 10^20 microliters.
Explanation: volume is defined as a three-dimensional measure of space that comprises a length, a width and a height. In other words, we are asked to convert from one volumetric measure to another (cubic centimeters to microliters) —volume is measured in units of cubic centimeters in metric, cubic inches or cubic feet in English measurement.
If, 1 cm³ = 1000 uL (microliters) then,
1 uL - - - - - - - - - 0.001 cm³ = 1 x 10^-3 cm
x uL - - - - - - - - - 1.01×10^-23 cm³
Therefore,
x uL = 1.01 x 10^-23 cm³ / 0.001 cm³
x uL = 1.01 x 10^(-23 - - 3)
x uL = 1.01 x 10^( - 23 + 3)
x uL = 1.01 x 10^20
Which is to say that a single rhodium atom of volume 1.01 x 10^23 cm³ would occupy 1.01 x 10^20 microliters.
Vas happenin!!
1-
A: 4
B: 48
C: 10
2-
A: 20
B: 18
C: 27
D: 16
Hope this helps!
-Zayn Malik
