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Tatiana [17]
3 years ago
12

What is is a simple definition of reduction?

Chemistry
1 answer:
alexandr402 [8]3 years ago
3 0

having a lesser value by a process of depletion

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Many grams of aluminum are required to produce 3.5 moles Al2O3 in the presence of excess O2?
Aleks [24]
The  grams  of aluminum  that are required   to produce  3.5  moles of AlO3  in  presence of excess O2   is calculated as  below

write  the  equation for reaction
4 Al + 3O2 =2 Al2O3

by use of mole  ratio between  Al  to  Al2O3   which  is  4 :2  the moles of  Al 
=3.5 x4/2 = 7  moles

mass of Al  =  moles /   x molar mass

= 7 moles  x27 g/mol  =189  grams

4 0
3 years ago
Who created the onion model in chemistry?
11111nata11111 [884]
Rick Maurer i think that’s how you spell his last name
8 0
3 years ago
How many liters of P, are in 3.5x1022 molecules at STP?
suter [353]

Answer: they giving you some hard question

Explanation:

i dont know  know what the answer is do you have any answer options

4 0
3 years ago
State whether the following statement is true.justify the answer with examples
Ilya [14]

Answer:

False

Explanation:

Atoms only achieve complete outer electron shells if they contain an outer shell with 7 electrons before gaining another electron or an outer shell with 1 electron before losing an electron. This is assuming that the octet-rule can be applied to said atom. In addition, the number of valence electrons varies from atom to atom which is why not ALL atoms achieve complete outer electron shells after gaining or losing just ONE electron.

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3 years ago
A sample of hydrogen occupies a volume of 351 mL at a temperature of 20 degrees Celsius. What is the new volume if the temperatu
xeze [42]
Volume of Hydrogen V1 = 351mL 
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We have V1 x T2 = V2 x T1 
So V2 = (V1 x T2) / T1 = (351 x 311) / 293 = 372.56 
Volume at 38 C = 373 ml
6 0
3 years ago
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