question_answer

Express each of the following in standard form:

(a) The mass of a proton in gram is                                             \[\frac{1673}{1000000000000000000000000000}\]

(b) A Helium atom has a diameter of 0.000000022 cm.

Answer:

(a)                                         \[\frac{1673}{1000000000000000000000000000}\]

\[=\frac{1.673\times {{10}^{3}}}{{{10}^{27}}}\]

\[=\text{ }1.673\text{ }\times \text{ }{{10}^{24}}\] gm

(b)                                                 \[0.000000022=2.2\times {{10}^{8}}\] cm