Answer:
question 6. answer is Metals are considered to be electropositive in nature due to their ability to donate electrons. Whereas non-metals are electronegative as they generally accept electrons
Answer:
28.0mL of the 0.0500M NaOH solution
Explanation:
<em>0.126g of lactic acid diluted to 250mL. Titrated with 0.0500M NaOH solution.</em>
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The reaction of lactic acid, H₃C-CH(OH)-COOH (Molar mass: 90.08g/mol) with NaOH is:
H₃C-CH(OH)-COOH + NaOH → H₃C-CH(OH)-COO⁻ + Na⁺ + H₂O
<em>Where 1 mole of the acid reacts per mole of the base.</em>
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You must know the student will reach equivalence point when moles of lactic acid = moles NaOH.
the student will titrate the 0.126g of H₃C-CH(OH)-COOH. In moles (Using molar mass) are:
0.126g ₓ (1mol / 90.08g) = <em>1.40x10⁻³ moles of H₃C-CH(OH)-COOH</em>
To reach equivalence point, the student must add 1.40x10⁻³ moles of NaOH. These moles comes from:
1.40x10⁻³ moles of NaOH ₓ (1L / 0.0500moles NaOH) = 0.0280L of the 0.0500M NaOH =
<h3>28.0mL of the 0.0500M NaOH solution</h3>
Answer:
it will last I'll say about 12-19 or 20 hours
Explanation:
my explanation is it all depends on the time and the degrees because it can last for weeks (5-7) but it won't
float
hope that helps
Answer:
Answers below!
Explanation:
<em>Reactant-</em> a substance that takes part in and undergoes change during a reaction.
<em>Product-</em> a substance produced during a natural, chemical, or manufacturing process.
<em>Precipitate-</em><u><em> </em></u><u>1.</u> to separate from a solution as a precipitate. <u> 2.</u> to fall to the earth's surface as a condensed form of water; to rain, snow, hail, drizzle, etc.
Precipitate has different meanings so I didn't really know about which one, but tell me if I'm wrong :)
