Answer:
Explanation:
substance (as an acid or salt) that when dissolved (as in water) conducts an electric current.
Answer:
5.90, 11.8, 47.2
Explanation:
Let’s remove the parentheses and write the formula as MgCl₂O₈.
We see that 1 mol Mg(ClO₄)₂ contains 1 mol Mg atoms, 2 mol Cl atoms, and 8 mol O atoms.
∴
∴ Mg, Cl, O = 5.90, 11.8, 47.2
Answer:- atoms of boron.
Solution:- It's unit conversion problem that could easily be solved step by step.
Step 1:- grams to moles conversion-
2.00 g B (1 mol B/10.81 g B) = 0.185 mol B
Step 2:- mol to atom conversion-
0.185 mol B(6.022 x 10^23 atom B/1mol B) = atoms of B
Neutrons = 118
<h3>Further explanation </h3>
The elements in nature have several types of isotopes
Isotopes are elements that have the same Atomic Number (Proton)
Atomic mass is <em>the average atomic mass of all its isotopes </em>
The most abundant isotope of gold (Au) is isotope Au-197
So the atomic mass of Au = 197
and the atomic number of Au = 79
Atomic mass is the sum of protons and neutrons
Atomic Number (Z) = Atomic mass (A) - Neutrons
Neutrons = A - Z
So neutrons for Au-197 :
Answer:
All metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide.
Explanation: