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olga nikolaevna [1]
3 years ago
12

Which of these processes are chemical reactions?

Chemistry
1 answer:
masya89 [10]3 years ago
8 0
Rotting vegetables is a chemical change I think.
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which is the false statement about c14? a. it is a stable isotope. b. it is a radioactive isotope. c. it is present in all livin
Snowcat [4.5K]
The false is A

as C-14 is an unstable isotope that is radioactive and is present in all living things i can be used to carbon date things 

hope that helps 
3 0
3 years ago
Read 2 more answers
Help with a chem question?
Gekata [30.6K]
The chem question is
4 0
3 years ago
Which isotope will spontaneously decay and emit particles with a charge of +2?
GenaCL600 [577]
(4) 220Fr, known as Francium-220, undergoes alpha decay, which emits an alpha particle, also known as a helium nucleus, which has a charge of +2.
8 0
3 years ago
How many moles of each reactant are needed to produce 3.60 x 10^2g ch3oh
zysi [14]
Methanol is prepared by reacting Carbon monoxide and Hydrogen gas,

                                   CO  +  2 H₂    →    CH₃OH

Calculating Moles of CO:
                                       According to equation,

             32 g (1 mole) of CH₃OH is produced by  =  1 Mole of CO
So,
             3.60 × 10² g of CH₃OH is produced by  =  X Moles of CO

Solving for X,
                       X  =  (3.60 × 10² g × 1 Mole) ÷ 32 g

                       X  =  11.25 Moles of CO

Calculating Moles of H₂:
                                       According to equation,

             32 g (1 mole) of CH₃OH is produced by  =  2 Mole of H₂
So,
             3.60 × 10² g of CH₃OH is produced by  =  X Moles of H₂

Solving for X,
                       X  =  (3.60 × 10² g × 2 Mole) ÷ 32 g

                       X  =  22.5 Moles of H₂

Result:
            3.60 × 10² g of CH₃OH
is produced by reacting 11.25 Moles of CO and 22.5 Moles of H₂.
3 0
3 years ago
what mass of grams of hydrogen sulfide will be required to participate 15 g of copper sulphide from a copper (ii) traoxosulphate
cestrela7 [59]
Characteristics of a Precipitate:
A precipitate is characterized by the following properties:

Appears as a solid species.
Settled down at the bottom of the reaction pot.
Insoluble in the corresponding solvent.
7 0
3 years ago
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