Answer:
The mass of gold in crown is 960.61 g.And the volume of gold is .
Explanation:
Density is defined as mass of the substance present in unit volume of the substance.
Mass of gold in an alloy of crown= m
Mass of silver in an alloy of crown = M
Volume gold in an alloy of crown= v
Volume of silver in an alloy of crown = V
Density of gold =
Density of silver =
Volume of the crown =
..(1)
Mass of eh crown = 1050 g
..(2)
Solving equation (1) and (2):
m = 960.61 g
M = 89.39 g
Volume of the gold = v =
Volume of silver = V =
The mass of gold in crown is 960.61 g.And the volume of gold is .
1. Should know the Atomic Number of each element (also equal to the number of protons
2. Should know the Mass number (equals to protons + neutrons)
3. Should know the element's symbol or abbreviation (e.g. C for carbon, Ar for argon etc.)
4. Should know the number of electrons
Carbon can be used in fuel
Hey there!
Molar mass NaCl = 58.44 g/mol
58.44 g ----------------- 22.4 ( at STP )
3.2 g -------------------- Volume ??
Volume = ( 3.2 x 22.4 ) / 58.44
Volume = 71.68 / 58.44
Volume = 1.226 L
Hope this helps!
Molar concentration = (numbet of mol Solute)/ ( volume Solution)
1) Finding
the number of the mol solute