Answer: The number of protons in cation is more than the number of electrons
Explanation:
cations are positive ions that means that they lose electrons to be stable nd have electron configuration (atomic number ) equivalent to the preceding noble gas
as : sodium 11 , it loses on electron to be stable and its electron configuration is equivalent to neon 10
so ,the number of protons in cation is more than the number of electrons
i hope it helps!
Answer:
we need a picture
Explanation:
but you can ask the question again with one
Answer:
Percentage mass of copper in the sample = 32%
Explanation:
Equation of the reaction producing Cu(NO₃) is given below:
Cu(s)+ 4HNO₃(aq) ---> Cu(NO₃)(aq) + 2NO₂(g) + 2H₂O(l)
From the equation of reaction, 1 mole of Cu(NO₃) is produced from 1 mole of copper. Therefore, 0.010 moles of Cu(NO₃) will be produced from 0.010 mole of copper.
Molar mass of copper = 64 g/mol
mass of copper = number of moles * molar mass
mass of copper = 0.01 mol * 64 g/mol = 0.64 g
Percentage by mass of copper in the 2.00 g sample = (0.64/2.00) * 100%
Percentage mass of copper in the sample = 32%
Answer:
c. 0.30
Explanation:
One C atom has a mass of 12.0 u and one Ar atom has a mass of 40.0 u.
Let’s assume that there are <em>n</em> atoms of C and <em>n</em> atoms of Ar. Then
Mass of <em>n</em> C atoms = <em>n</em> × 12.0
Mass of <em>n</em> C atoms = 12.0<em>n</em> u
Mass of <em>n</em> Ar atoms = <em>n</em> × 40.0
Mass of <em>n</em> Ar atoms = 40.0<em>n</em> u
ratio = mass of C/mass of Ar
ratio = 12.0<em>n</em>/40.0<em>n
</em>
ratio = 0.300
