Answer:
ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
Explanation:
Answer = C. As the temperature increases, the speed of gas molecules increases.
As the temperature increases, the gas molecules gain kinetic energy, therefore their speed increases.
Answer : The correct option is, (a) 345 K
Explanation :
The conversion used for the temperature from degree Celsius to Kelvin is:
where,
= temperature in Kelvin
= temperature in centigrade
As we are given the temperature in degree Celsius is, 72
Now we have to determine the temperature in Kelvin.
Therefore, the temperature in Kelvin is, 345 K
Answer:
Increasing precision with multiple measurements
Explanation:
The more measurements you take (provided there is no problem with the clock!), the better your estimate will be. Taking multiple measurements also allows you to better estimate the uncertainty in your measurements by checking how reproducible the measurements are.
Answer:
3.6 x 10^-12
Explanation:
[H+]= 10^-5.95= 1.12 x 10^-6 M
HA -> H+ + A-
k= [H+] [A-]/[HA]
k= (1.12 x10^-6)^2/0.35M
k= 3.6 x 10^-12
