A dynamometer is used in measuring force!
PH +pOH = 14
(14 - 11.5) = 2.5 (the ph is 2.5)
NOW, Ph = -lg (H*)
apply the formula
Answer:
A NaCl: ionic (Na is metal and Cl is not metal)
B. AIC13: ionic (Al is metal and Cl is not metal)
C. C2H3N: covalent (C, H and N are nonmetals)
D. C3H60: covalent (C and H are nonmetals)
E. BaCl2: ionic (Ba is metal and Cl is not metal)
F. CaCl2: ionic (Ca is metal and Cl is nonmetal)
Explanation:
In ionic bonds, they are formed when there is a difference in electronegativity, between metals and nonmetals. In the case of covalent bonds, one or more pairs of electrons are shared between nonmetal compounds.
Answer:
Atomic mass is the mass of an atom and is given in a.m.u. (atomic mass unit).
Explanation:
Atomic mass is the mass of an atom and is given in a.m.u. (atomic mass unit). However, a molar mass is the mass of one mole atoms or molecules and is given in grams. Sodium atom has a mass of 23 a.m.u. however, the molar mass of sodium is 23g/mol.
The two atoms shown in the equation are CALCIUM and oxygen.
<span>You start off with a neutral calcium atom with a shell of two electrons, a shell of 8 around that, a shell of 8 around that, and a shell containing 2...with no charge. </span>
<span>20 protons + 20 electrons. </span>
<span>You also have an oxygen atom with a shell of 2, and a shell of 6...with no charge. </span>
<span>8 protons + 8 electrons. </span>
<span>Each ionizes to form a calcium ion with 2 electrons removed (from the outer shell), leaving a +2 charge (20 protons, 18 electrons)... </span>
<span>and an oxygen ion with 2 electrons added (to the outer shell), leaving a -2 charge (8 protons, 10 electrons). </span>
<span>Their electrostatic attraction causes them to come together to form an ionic compound of CaO in a crystal lattice.</span>