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3 years ago

To get the salt out of salt water, one could

Chemistry

1 answer:

My name is Ann [436]3 years ago

5 0

Answer:

Explanation:

because so that can evaporate

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What is 25 °C in °F?

kifflom [539]

Answer:

77°F

Explanation:

(25°C × 9/5) + 32 = 77°F

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3 years ago

Calculate the mass (in grams) of methylene bluecrystals that you must weigh in order to make 100.0mL of 1.25 × 10-5mol/L methyle

mario62 [17]

Answer: The mass of methylene blue that must be weighed is $3.99\times 10^{-4}g$

Explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

We are given:

Molarity of solution = $1.25\times 10^{-5}M$

Molar mass of methylene blue = 319.85 g/mol

Volume of solution = 100.0 mL

Putting values in above equation, we get:

$1.25\times 10^{-5}M=\frac{\text{Mass of methylene blue}\times 1000}{319.85\times 100.0}\\\\\text{Mass of methylene blue}=\frac{1.25\times 10^{-5}\times 319.85\times 100.0}{1000}=3.99\times 10^{-4}g$

Hence, the mass of methylene blue that must be weighed is $3.99\times 10^{-4}g$

4 0

3 years ago

What part of the human nervous system links the brain to the rest of the body

otez555 [7]

brain stem connects the brain to the rest of the body through spinal cord

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3 years ago

Read 2 more answers

Could you guys help me with these questions pls. Thank you

lapo4ka [179]

Answer:

8.4) 27.1 cm³

8.5) 0.217 mol/dm³

Explanation:

Please see attached picture for full solution.

8.4) Since the results from titrations 3-5 are within 0.10cm³ from each other, these 3 results are concordant.

8.5) Find mol of sulfuric acid to find mol of NaOH using mole ratio. Equation has already been balanced for you, so mole ratio of NaOH to H2S04 is 2:1. To find concentration of NaOH, divide the number of moles by the volume in dm³ since the units for concentration is mol/dm³, which you can think of as the number of moles of NaOH in a dm³ of solution.

1 dm³ = 1000cm³

Thus, 1cm³= 1/1000 dm³

3 0

3 years ago

BALANCING EQUATION XC12(aq) + AgNO3(aq) X(NO3)2(aq) +AgCl(s)

slava [35]

Answer:

XCl2(aq) + 2 AgNO3(aq) = 2 AgCl(s) + X(NO3)2(aq)

8 0

3 years ago