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zysi [14]
3 years ago
14

What are the empirical and molecular formulas for a compound related ?

Chemistry
2 answers:
zysi [14]3 years ago
6 0

Explanation:

Hello!

Let's solve this!

The empirical formula says how many moles of each element are in the compound, but determined experimentally.

The molecular formula is the formula that indicates which elements make up the compound and how many there are of each element.

Ket [755]3 years ago
4 0
So to answer your question An empirical formula of a compound is the simplest whole-number ratio of atoms of the elements in the compound. The molecular formula of a compound is either the same as its experimentally determined empirical formula, or it is a simple whole-number multiple of it.
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A rock is believed to have been formed 1.25 billion years ago, as calculated by using potassium-40 dating. If the half-life of p
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50 % of the original amount of potassium 40 will be left after one half life or 1.25 billion years

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To support the believe tht the rock was formed 1.25 billion years ago we have

N_{(t)} =N_{(0)} (\frac{1}{2}) ^{\frac{t}{t_{\frac{1}{2} } } }

After 1.25 billion years we have

N_{(t)} =N_{(0)} (\frac{1}{2}) ^{\frac{1.25billion}{1.25 billion}  } } }  = N_{(t)} =N_{(0)} (\frac{1}{2}) ^{1 } } } =0.5 of N_{(0)} will be left or 50 % of the original amount of potassium 40 will be left

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A certain flexible weather balloon contains 3.5 L of helium gas. Initially, the balloon is in WP at 8500ft, where the temperatur
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\large \boxed{\text{3.9 L}}

Explanation:

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T₂ =   (6.8  + 273.15) K = 279.95  K

(b) Calculate the new volume

\begin{array}{rcl}\dfrac{p_{1}V_{1} }{T_{1}} & = & \dfrac{p_{2}V_{2}}{T_{2}}\\\\\dfrac{\text{571.2 Torr $\times$ 3.5 L}}{\text{294.65 K}} & = & \dfrac{\text{400 Torr} \times V_{2}}{\text{279.95 K}}\\\\\text{6.78 L} & = & \text{1.429V}_{2}\\\\V_{2} & = & \textbf{4.7 L}\\\end{array}\\\text{The new volume of the balloon is $\large \boxed{\textbf{4.7 L}}$}

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