Where was the first permanent European settlement in what is now the United States?

Chemistry

1 answer:

siniylev [52]2 years ago

6 0

Answer:

Jamestown, Virginia

Explanation:

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Which equation shows how to calculate how many grams (g) of KOH would be needed to fully react with 4 mol Mg(OH)2? The balanced

bazaltina [42]

Mole ratio:

MgCl₂ + 2 KOH = Mg(OH)₂ + 2 KCl

2 moles KOH ---------------- 1 mole Mg(OH)₂
moles KOH ------------------- 4 moles Mg(OH₂)

moles KOH = 4 x 2 / 1

= 8 moles of KOH

molar mass KOH = 56 g/mol

mass of KOH = n x mm

mass of KOH = 8 x 56

= 448 g of KOH

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3 years ago

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Irina18 [472]

Answer:

A.) 1

Explanation:

Propane only exists in one conformation. It does not have enough carbons to form branches, and there are only hydrogens attached to each carbon. Furthermore, there is no way to twist the carbon or change its orientation (ex. cis- and trans-) to result in a different structure of propane. There is no other way to represent the molecule without drawing a different molecule.

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1 year ago

(Brainliest) Please Help! Please do not give me a random, gibberish answer or I will report you and give you a low rating theref

nataly862011 [7]

Answer:

3.10g

Explanation:

Please see the attached picture for the full solution.