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3 years ago

A rattlesnake is 2.44m long. How many centimeters (cm) long is the snake? 1 m = 100 cm (please show the work) ASAP

Chemistry

1 answer:

svetoff [14.1K]3 years ago

3 0

Answer:

The rattlesnake is 144 cm long

Explanation:

Hope this helps :)

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What is the concentration of a 1:10 dilution of a 2.5 M solution of NaCl? How would you prepare exactly 100 ml of such a solutio

Marina CMI [18]

<u>Answer:</u> The concentration of the solution is 0.25 M

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Let the volume of solution of 2.5 M NaCl be 10 mL

We are given:

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To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated NaCl solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted NaCl solution

We are given:

$M_1=2.5M\\V_1=10mL\\M_2=?M\\V_2=100mL$

Putting values in above equation, we get:

$2.5\times 10=M_2\times 100\\\\M_2=\frac{2.5\times 10}{100}=0.25M$

Hence, the concentration of the solution is 0.25 M

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Explanation:

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3 years ago