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allsm [11]
2 years ago
14

Which of the following equations is balanced?

Chemistry
1 answer:
Georgia [21]2 years ago
4 0

Answer:

B

Explanation:

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How many moles of AIC3 are there in 1,119.972 g ?
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Answer:

it is 8.40189 moles of AlCl3

mole = mass/molar mass

mole= 1119.972/133.34

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3 years ago
Personal eyeglasses provide as much protection as Group of answer choices splash proof chemical goggles a face shield safety gla
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none of the above

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3 years ago
CH3COOH(aq) + NaOH(aq) → H2O(l) + NaCH3COO(aq)
ser-zykov [4K]
I believe this is a double replacement. As you can see none of the chemical symbols are missing, there just "replaced". 
3 0
3 years ago
Which scientists is credited with developing the firdt scientific atomic theory
ratelena [41]

<em>Answer: </em>John Dalton

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5 0
3 years ago
You heat 3.869 g of a mixture of fe3o4 and feo to form 4.141 g fe2o3. What is the mass of oxygen reacted?
Lostsunrise [7]

The reaction is  

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Thus as shown in the balanced equation two moles of Fe2O3 are formed when 0.5 moles of O2 reacted with mixture of FeO and Fe3O4

moles of Fe2O3 = MAss / Molar mass = 4.141 / 159.69 = 0.0259 moles

So moles of O2 needed = 0.5 X 0.0259 = 0.01295

Mass of O2 = moles X molar mass = 0.01295 X 32 = 0.4144 grams

5 0
3 years ago
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