The mass of a proton is $0.000000000000000000000001673$ gram. The standard form of $0.000000000000000000000001673$ is $1.673\times {10}^k$. Find the value of $k$.

The thickness of a piece of paper is $0.0016 \mathrm{cm}$. The standard form of  $0.0016$ is $k\times {10}^{-3}$. Find the value of $k$.

The diameter of a wire on a computer chip is $0.000003 \mathrm{m}$. The standard form of  $0.000003$ is $3.0\times {10}^k$. Find the value of $k$.

A helium atom has a diameter of $\frac{22}{100000000000} \mathrm{m}$. The standard form of  $\frac{22}{100000000000}$ is $k\times {10}^{-10}$.

Mass of a molecule of hydrogen gas is about $0.00000000000000000000334$ tons. The standard form of $0.00000000000000000000334$ is $k\times {10}^{-21}$. Find the value of $k$.

The human body has $1$ trillion cells which vary in shapes and sizes. The standard form of $1$ trillion is $1\times {10}^k$. Find the value of $k$.

The distance from the Earth of the Sun is $149,600,000,000 \mathrm{m}$. The standard form of $149,600,000,000$ is $k\times {10}^{11}$. Find the value of $k$.

The speed of light is $300,000,000 \mathrm{m}/\sec$. The standard form of $300,000,000$ is $3.0\times {10}^k$. Find the value of $k$.

Mass of the earth is $5,970,000,000,000,000,000,000,000 \mathrm{kg}$. The standard form of $5,970,000,000,000,000,000,000,000$ is$k\times {10}^{24}$. Find the value of $k$.