1 cm ------------ 10 mm
5,678 cm ------- ?
5,678 x 10 / 1 => 56,78 mm
Answer:
The number of atoms present does not affects the half-life
Explanation:
The half-life,
of an unstable atomic nuclei is the duration in time for the quantity of the atoms having such unstable nuclear to decrease by a factor of 2 in nature. Here nature refers to the position of the unstable nuclear in the environment. It is indicative of the rate of decay of unstable atoms and the period of survival of stable atoms
The half life is given by
![N(t) = N_0 \left (\frac{1}{2} \right )^{\frac{t}{t_{1/2}}}](https://tex.z-dn.net/?f=N%28t%29%20%3D%20N_0%20%5Cleft%20%28%5Cfrac%7B1%7D%7B2%7D%20%20%5Cright%20%29%5E%7B%5Cfrac%7Bt%7D%7Bt_%7B1%2F2%7D%7D%7D)
Therefore,
![t_{1/2} = \frac{t\cdot ln2}{ln(\frac{N_0}{N_t} )}](https://tex.z-dn.net/?f=t_%7B1%2F2%7D%20%3D%20%5Cfrac%7Bt%5Ccdot%20ln2%7D%7Bln%28%5Cfrac%7BN_0%7D%7BN_t%7D%20%29%7D)
Whereby as time time increases N₀ becomes larger such that
remain constant.
Answer:
Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14. ... For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.