Anode- oxidization
Cathode-reduction
Answer:
Beta rays are electrons.
Explanation:
A neutron in the nucleus of a radioactive atom decays into a proton and an electron, which is emitted from the atom.
Answer:
C. The lowest whole-number ratio of atoms in a molecule.
Explanation:
Hello there!
In this case, according to the definition of the empirical and the molecular equations, it is possible for us to consider the following example of molecular formula, C4H10, whose empirical formula is C2H5.
In such a way, it is possible for us to say that the empirical formula gives C. The lowest whole-number ratio of atoms in a molecule, as it is the result of the simplification of the molecular formula when possible.
Regards!
The volume of concentrated HCl : 2.073 ml
<h3>Further explanation</h3>
Given
37% HCl by mass; density 1.19 g/mL
Required
The volume of concentrated HCl
Solution
Conversion to molarity :
37% x 1.19 g/ml =0.4403 g/ml
g/ml to mol/L :
=0.4403 g/ml x 1000 ml/L : 36.5 g/mol
=12.06 mol/L
or we can use formula :
Dilution formula :
M₁V₁=M₂V₂
12.06 M x V₁ = 0.1 M x 0.25 L
V₁ = 0.0021 L = 2.073 ml
<span>The
molar mass of the substance represents the mass of the substance in one mole. You
can see the molar masses of the substance in interest in the periodic table of
elements. It is mostly seen at the right bottom side of the element name. In
here, you have 25 g of sodium. You should know by now that sodium has a molar
mass of 23 grams per mole. To get the number of moles of sodium, divide 25.0
grams by 23 grams per mole. The answer is 1.09 moles of sodium.</span>
