$1 \, kg \, m^{-3} = \dots \, g \, cm^{-3}$

Express the following in scientific notation:
$(i)$ $0.0048$
$(ii)$ $234,000$
$(iii)$ $8008$
$(iv)$ $500.0$
$(v)$ $6.0012$

If the speed of light is $3.0 \times 10^{8} \,m s^{-1}$,calculate the distance covered by light in $2.00 \,ns$.

How many significant figures should be present in the answer of the following calculations?
$(i)$ $\frac{0.02856 \times 298.15 \times 0.112}{0.5785}$
$(ii)$ $5 \times 5.364$
$(iii)$ $0.0125 + 0.7864 + 0.0215$

If an object weighs $275 \ lb$,what is its weight in $kg$? $(1 \ kg = 2.205 \ lb)$

State whether the following statements are true or false:
$(i)$ The Law of Multiple Proportions was given by the scientist Dalton.
$(ii)$ $1 \ L = 1 \ dm^3$
$(iii)$ $10 \ cm = 1 \ dm$