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Ann [662]
3 years ago
12

Why do historians analyze historical events and cause and effect relationship

Chemistry
2 answers:
telo118 [61]3 years ago
8 0
Recognizing patterns of cause and effect is an important analytical skill that allows historians to explain why things happened the way they did in the past. It's also a strategy that can make it possible to predict what may happen in the future.
Arte-miy333 [17]3 years ago
7 0

Answer:

yeah. def

Explanation:

becuase someone told me to

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During a synthesis reaction, 1.8 grams of magnesium reacted with 6.0 grams of oxygen. What is the maximum amount of magnesium ox
skelet666 [1.2K]

Answer:

2.9 grams.

Explanation:

  • From the balanced reaction:

<em>Mg + 1/2O₂ → MgO,</em>

1.0 mole of Mg reacts with 0.5 mole of oxygen to produce 1.0 mole of MgO.

  • We need to calculate the no. of moles of (1.8 g) of Mg and (6.0 g) of oxygen:

no. of moles of Mg = mass/molar mass = (1.8 g)/(24.3 g/mol) = 0.074 mol.

no. of moles of O₂ = mass/molar mass = (6.0 g)/(16.0 g/mol) = 0.375 mol.

<em>So. 0.074 mol of Mg reacts completely with (0.074/2 = 0.037 mol) of O₂ which be in excess.</em>

<em></em>

<em><u>Using cross multiplication:</u></em>

1.0 mole of Mg produce → 1.0 mol of MgO.

∴ 0.074 mol of Mg produce → 0.074 mol of MgO.

<em>∴ The amount of MgO produced = no. of moles x molar mass </em>= (0.074 mol)(40.3 g/mol) = <em>2.98 g.</em>

5 0
3 years ago
Compound name for C3F8
Naya [18.7K]

Answer:

Perflutren

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Perflutren is a fluorinated hydrocarbon and gaseous substance used as an imaging contrast agent.

8 0
3 years ago
When an animal eats corn or peanuts, will it also eat the seeds?
nasty-shy [4]

Answer:yes

Explanation:it doesnt know

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The electronic configuration of phosphorous is 2.8.5. Explain, in terms of its electronic configuration, why phosphorus is in gr
Setler [38]

Answer:

Explanation:

phosphorus belongs to group 5 of the periodic table because it has 5 electron in its outermost shell the number of electron in the outermost shell of electron determine the group of the element in the periodic table

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Which two types of reactions are also always redox reactions? Explain your answer.
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Single displacement and combustion reactions are ALWAYS redox.
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