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3 years ago

Help me ASAP please??

Chemistry

2 answers:

kirill [66]3 years ago

3 0

Answer:

B 2Li + Cl2 ---> 2LiCl

Explanation:

There are 2 Li atoms and 2 Cl atoms on both sides of the equation.

Afina-wow [57]3 years ago

3 0

To see if mass has been conserved during a chemical reaction you must look that there is the same amount of each element on both sides.

Let's look at option A

$S_{8} + F_{2}$ → $SF_{6}$

We start off with 8 Sulfurs and 2 Florine. This means that we must end up with 8 Sulfurs and 2 Florine As you can see this is not the case. We only have 1 Sulfur and 6 Florine. This means this chemical reaction is not balanced and does not show conservation of mass.

Let's look at option B

$2Li + Cl_{2}$ → $2LiCl$

We start off with 2 Li and 2 Cl. This means that we must, again end up with 2 Li and 2 Cl. As we can see this is the case! This equation is balanced and shows conservation of mass. This is you answer!!!

I only did the work up until the answer (B.). Let me know if you need me to explain why C. and D aren't the answer.

~Just a girl in love with Shawn Mendes

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$\begin{array}{rcl}-65 300 & = & -8.314 \times 298.15 \ln K \\65300& = & 2479 \ln K\\26.34 & = & \ln K\\K& = & e^{26.34}\\&= & \mathbf{2.76 \times 10}^{\mathbf{11}}\\\end{array}$

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