The central cluster of protons and neutrons in an atom is called the atom's nucleus. Because the only other part of an atom to be concerned about is the electron (which has a very small mass compared to protons and neutrons), the nucleus is also comparatively dense, and holds most of the atom's mass.
I think equilibrium is the answer to your question
Mars is the also known as the red planet, its not the hottest planet because it has a very thick atmosphere.
Mars
Venus I believe is the last ones answer ....
Answer:
91.4%
Explanation:
Potassium hydrogen tartrate, KHT, reacts with KOH as follows.
KHT + KOH → H₂O + K₂T
<em>where 1 mole of acid (KHT) reacts per mole o base (KOH), -That is acid/base ratio 1:1</em>
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The endpoint of a titration is the point in which moles of KOH = moles of KHT, you can see this endpoint with an indicator or doing a potentiometric titration.
As the endpoint requires 21.58mL = 0.02158L of a 0.1125M KOH, moles of KOH = moles of KHT are:
0.02158L × (0.1125mol / L) = 2.428x10⁻³ moles of KOH = moles of KHT
To convert these moles to grams you use molar mass of KHT (188.177g/mol):
2.428x10⁻³ moles of KHT × (188.177g / mol) = 0.457g of KHT are in the sample.
As you add 0.500g of sample, percentage of KHT in the sample is:
(0.457g / 0.500g) × 100 =
<h3>
91.4%</h3>
-That is the purity of the sample-
