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:
0.33%
Explanation:
From the question given above, the following data were obtained:
Experimental value = 9.842 m/s²
Accepted value = 9.81 m/s²
Percentage error =?
The percentage error in the calculation can be obtained as follow:
Percentage error = |Experimental – Accepted| / Accepted value × 100
Percentage error = |9.842 – 9.81| / 9.81 × 100
Percentage error = 0.032 / 9.81 × 100
Percentage error = 0.33%
Therefore, the error in the calculation is 0.33%
Answer:
101.63° C
Explanation:
Volume expansivity γa = γr - γ g = 18 × 10⁻⁵ - 2.0 × 10⁻⁵ = 16 × 10⁻⁵ /K
v₂ - v₁ / v₁θ = 16 × 10⁻⁵ /K
(500 - 492 ) mL / (492 × 16 × 10⁻⁵) = θ
θ = 101.63° C
Answer: The hydrogen-ion concentration for the aqueous solution is 
and solution is acidic.
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxyl ion concentration.
![pOH=-\log [OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D)
Putting in the values:
![pOH=-\log[1\times 10^{-11}]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%5B1%5Ctimes%2010%5E%7B-11%7D%5D)
\
![pH=-log[H^+]](https://tex.z-dn.net/?f=pH%3D-log%5BH%5E%2B%5D)
![3=-log[H^+]](https://tex.z-dn.net/?f=3%3D-log%5BH%5E%2B%5D)
![[H^+]=10^{-3}M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D10%5E%7B-3%7DM)
As pH is less than 7, the solution is acidic.
