#### Question

A brick has a mass of $4\text{ kg}$ and the Earth has a mass of $6\cdot 10^{27}\text{ g}$. What is the mass of 1 mole of bricks? How many moles of bricks have a mass equal to the mass of the Earth?

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#### Step 1

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We are given the following data:

\begin{align*} \text{mass of a brick:} \ m_b&=4 \text{ kg}\\ &=4000 \text{ g}\\ \text{mass of the Earth:} \ m_E&=6\cdot 10^{27} \text{ g} \end{align*}

Our mission is to calculate the mass of one mole of bricks in grams. And to determine how many moles of bricks have a mass equal to the mass of the Earth.