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3 years ago

5

Libby is doing experiments with two different magnets. Magnet A can only attract thumbtacks that are up to 1 inch away from it.

Magnet B can attract thumbtacks that are up to 3 inches away from it. What is likely true of the magnets?

1 answer:

castortr0y [4]3 years ago

6 0

magnet B has a greater magnetic pull than magnet A

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A chemist must prepare 300.0mL of nitric acid solution with a pH of 0.70 at 25°C. He will do this in three steps: Fill a 300.0mL

d1i1m1o1n [39]

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To calculate the pH of the solution, we use the equation:

$pH=-\log[H^+]$

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To calculate the volume of the concentrated solution, we use the equation:

$M_1V_1=M_2V_2$

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

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

We are given:

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Putting values in above equation, we get:

$7.0\times V_1=0.199\times 350.0\\\\V_1=\frac{0.199\times 350}{7.0}=9.95mL$

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