3 years ago

1. Why do magnets repel each other?

Chemistry

1 answer:

kipiarov [429]3 years ago

3 0

I’m on the same question

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Use the information from the diagram to calculate the enthalpy of combustion for methane. (HELP ASAPPP!!)

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Answer:

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4 years ago

According to Neil’s Bohr’s atomic model , what occurs when an atom absorbs radiated energy?

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An electron shifts from a lower energy to a higher energy

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3 years ago

An object starts at position 12 on a horizontal line with a reference point of o. What is the position of the object if it moves

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Answer:

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Explanation:

Consider object is starting 12 units right from the reference point which is 0.

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3 years ago

Chemistry mixes 108 g of O2, with 232 L of C3Hg at STP. How many grams of H2O will be produced? The balanced equation for this r

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2 years ago

Compound X has a molar mass of 266.64 g/mol and the following composition: aluminum 20.24% chlorine 79.76% Write the molecular f

N76 [4]

Answer:

Explanation:

Assume we have 100g of this substance. That means we would have 20.24g of Cl and 79.76g of Al. Now we can find how many moles of each we have:

$\frac{79.76 \:g}{35.45 \: g/mol}$ = 2.25 mol of chlorine

$\frac{20.24 \: g}{26.98 \: g/mol}$ = 0.750 mol of Al.

To form a integer ratio, do 2.25/0.75 = 2.99999 ~= 3.

So the ratio is essentially Al : Cl => 1 : 3. To the compound is possibly $AlCl_3$ .

However, it says it has a molar mass of 266.64 g/mol, and since AlCl3 has a molar mass of 133.32, it must be $Al_2Cl_6$ .

Actually this molecule isn't exactly AlCl3 (which is ionic). Al2Cl6 forms a banana bond where Cl acts as a hapto-2 ligand. But that's a bit advanced. All you need to know is X = Al2Cl6

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3 years ago