Answer:
See Explanation
Explanation:
Number of moles of NaOH = 0.3868 L × 1.707 M = 0.660 moles
Reaction of Al^3+ and OH^-
Al^3+(aq) + 3OH^-(aq) -----> Al(OH)3(s)
If 1 mole of Al3+ reacts with 3 moles of OH^-
x moles of Al^3+ reacts with 0.660 moles of OH^-
x = 1 × 0.660/3
x= 0.22 moles
Mass of Al^3+ = 0.22 moles × 27 g/mol = 5.94 g of Al^3+
Co^2+(aq) + 2OH^-(aq) ----> Co(OH)2(s)
1 mole of Co^+ reacts with 2 moles of OH^-
x moles of Co^2+ reacts with 0.660 moles of OH^-
x = 1 × 0.660/2 = 0.33 moles
Mass of Co^2+ = 0.33 moles × 59 g/mol = 19.47 g
8 companies i looked it up on google and thats what it said hope its helpful
I think you mean alcohol ? if so there are a few basic types including ethanol
Answer:
The answer is: Chemical element
Explanation:
A chemical element refers to the chemical substance or species containing a fixed number of neutrons and protons in its nuclei. The atomic number of an element is equal to the number of protons.
All the matter present in the universe is composed of these chemical elements.The chemical and physical properties of the these elements are summarized in periodic table.
Answer:
an ion with charge of 2+
Explanation:
proton and electron numbers do not cancel out...
it has 2 more protons than electrons.
since protons carry a positive charge, a charge of 2+ is now carried by the ion.
it is no longer called an atom as the charges do not cancel out.