3 Sig FIgs in 303,000 mm
Any nonzero is a sig fig.
Any zero between two non zeros is a sig fig.
Auroras present in polar regions.
Answer:
A catalyst is a substance which increases the rate of a chemical reaction without itself getting consumed. It is known that all catalysts are enzymes but all enzymes are not catalysts.
Explanation:
Explanation:
There will occur a straight line for the curve of Ln[(CH_{3})_{3}CCl] Vs. time. Since, it is a first order reaction therefore, the formula of its half-life will be as follows.
Half-life = 
or, k = 
=
So, rate of the reaction will be as follows.
Rate = ![[(CH_{3})_{3}CCl]^{1}](https://tex.z-dn.net/?f=%5B%28CH_%7B3%7D%29_%7B3%7DCCl%5D%5E%7B1%7D)
= 
= 0.000473
=
Thus, we can conclude that the instantaneous rate of given reaction is
.
Hcl + nh3 -> nh4cl (balanced eqn)
no. of mol of hcl = vol. (L) x molarity = 0.045 × 0.25 = 0.01125mol
ratio of hcl:nh3 after balancing eqn = 1:1
no. of mol of nh3 that is completely neutralised by hcl = 0.01125 × 1 = 0.01125mol
therefore, concentration of nh3 = mol / total volume (L) = 0.01125mol / 0.025L= 0.45M