Answer:
0.007756M KHP; 0.0009695 moles NaOH reacts; 0.03488M NaOH.
Explanation:
Potassium hydrogen phthalate, KHP, is a salt used as standard to determine concentration of basic solutions as NaOH solutions.
To find molarity of the KHP solution we need to convert mass of KHP to moles and divide this in 125mL = 0.125L:
<em>Moles KHP -Molar mass: 204.22g/mol-:</em>
0.198g * (1mol / 204.22g) = 0.0009695 moles KHP
<em>Molarity:</em>
0.0009695 moles KHP / 0.125L = 0.007756M KHP
NaOH reacts with KHP as follows:
NaOH + KHP → Na⁺ + KP⁻ + H₂O
That means 1 mole of NaOH reacts per mole of KHP, that means moles of NaOH that reacts are = Moles of KHP added:
0.0009695 moles NaOH reacts
In 27.80mL = 0.02780L the NaOH was contained. Molarity is:
0.0009695 moles NaOH / 0.02780L =
0.03488M NaOH
The pigment is called chlorophyll and it’s job is to absorb light- usually sunlight
Answer:
Sulfer
Explanation:
We just took the lesson lol
Answer:
<u><em>During the colonial period, the arrival of sugar culture deeply impacted the society and economy in the Caribbean. It not only dramatically increased the ratio of slaves to free men, but it increased the average size of slave plantations</em></u>
<u><em>The negative impact of the slave trade on the development of the Caribbean islands. The slave trade had long lasting negative effects on the islands of the Caribbean. The native peoples, the Arawaks, were wiped out by European diseases and became replaced with West Africans</em></u>
<u><em>The sugar revolutions were both cause and consequence of the demographic revolution. Sugar production required a greater labor supply than was available through the importation of European servants and irregularly supplied African slaves</em></u>
Explanation:
Hope this helps:)
