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FromTheMoon [43]
3 years ago
12

How many L of stock solution of 4 M NHz do you need to prepare 1 L of 2 M NH3?

Chemistry
1 answer:
adell [148]3 years ago
8 0

Answer:

o make 200.0 mL of 0.0500 M. NHZ Milone Viana = Maillot. (14.8 moles/L)(L) = (0.0500 ndes ) (0.2004). = (0.0500 ... (14.8 moles/L) Cooox - Man. 0:500k. Mo:1= 0.49 moles/. 5.2.(2). Sketch a closed box to indicate .

Explanation:

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What is the most reactive family on the periodic table?
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alkali metals are the most reactive family

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How do I find percent mass composition
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1. Find the molar mass of all the elements in the compound in grams per mole.

2. Find the molecular mass of the entire compound.

3. Divide the component's molar mass by the entire molecular mass.

4. You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.

Explanation:

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A 1.85 kg textbook is sitting on a bookshelf 2.23 m above the floor. How much potential energy does it have?
neonofarm [45]

Answer:

\boxed {\boxed {\sf 40.4299 \ Joules}}

Explanation:

Potential energy is energy due to position. It is the product of mass, height, and acceleration due to gravity.

PE= m \times g \times h

The mass of the textbook is 1.85 kilograms. Assuming this is on Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 2.23 meters.

  • m= 1.85 kg
  • g= 9.8 m/s²
  • h= 2.23 m

Substitute the values into the formula.

PE = 1.85 \ kg \times 9.8 \ m/s^2 \times 2.23 \ m

Multiply the first 2 numbers together.

PE=18.13 \ kg*m/s^2 *2.23 \ m

Multiply again.

PE= 40.4299 \ kg*m^2/s^2

  • 1 kilogram square meter per square second (1 kg*m²/s²) is equal to 1 Joules (J)
  • Our answer of 40.4299 kg*m²/s² is equal to 40.4299 J

PE= 40.4299 \ J

The textbook has <u>40.4299 Joules of potential energy.</u>

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