D because i looked it up lol
Let's assume we have 100 grams of this solution, and therefore 20.0 grams of NaOH, and 80.0 grams of water.
NaOH has a molar mass of 40.00 grams/mole, so we can convert NaOH to moles: (20.0 grams of NaOH) * (1 mole NaOH/40.00 grams NaOH) = 0.500 moles NaOH.
Next, we have a molar mass of water of 18.02 g/mol, so we can convert water to moles:
80.0 grams H2O * (1 mole H2O/18.02 grams) = 4.44 moles H2O
The mole fraction of NaOH is the moles of NaOH over the total moles of all parts of the solution. Therefore:
(0.500 moles NaOH)/(0.500 moles + 4.44 moles) = 0.101
0.101 = mole fraction of solute
The molal concentration is defined as the number of moles of solute over the number of kilograms of solvent (water).
We have 0.500 moles of NaOH, and 0.0800 kg of water, so it becomes:
(0.500 moles NaOH)/(0.0800 kg H2O solvent) = 6.25 molal solution
Answer:
vibrations and lots of girls screaming for sure
Explanation: and I dont know if this conts
Answer:
The central and most important part of an object, movement, or group, forming the basis for its activity and growth.
Explanation:
hope this helps!
Humans directly impacted the environment by destroying of the habitat of the other plants. Hence, option B is correct.
<h3>What is Kudzu plant?</h3>
Kudzu vine is known as a fast-growing plant since the '30s and 40's when the Soil Conservation Service paid about 8$ to every farmer who can plant an acre with this plant.
Kudzu overgrows and crowds out native plant population, for sunlight and nutrients. Therefore, it's considered 'invasive'.
It grows so quickly that it cannot be controlled and disturb other habitats of plants. Hence, option B is correct.
Learn more about kudzu vine here:
brainly.com/question/11776380
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