i don't understand but atoms are made of electrons an protons and neutrons..
Answer: The number of protons plus the number of neutrons equals the atomic mass.
Explanation:
Atomic mass is defined as total number of protons and neutrons in the atom.
It is an average mass of an atom.
It is expressed in atomic mass unit that is a.m.u.
It is denoted with symbol 'A'.
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The empirical formula for a compound composed of 0.0683 mol of carbon ( C ), 0.0341 mol of hydrogen ( H ), and 0.1024 mol of nitrogen ( N ) is
.
<h3>What is the empirical formula?</h3>
An empirical formula tells us the relative ratios of different atoms in a compound.
Given data:
Moles of carbon = 0.0683 mol
Moles of hydrogen = 0.0341 mol
Moles of nitrogen = 0.1024 mol
Dividing each mole using the smallest number that is divided by 0.0341 moles.
We get:
Carbon= 2
Hydrogen=1
Nitrogen=3
The empirical formula for a compound is
.
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Answer:
molarity = moles of solute/liters of solution
0.25 M NaOH = 0.25 mol NaOH/L
mass = moles (n) × molar mass (M)
n(NaOH) = 0.25 mol
M(NaOH) = 39.997 g/mol
m(NaOH) = 0.25 mol × 39.997 g/mol = 9.999 g