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BigorU [14]
3 years ago
8

How many neutrons are in aluminum

Chemistry
2 answers:
Lapatulllka [165]3 years ago
7 0
There are 13 neutrons in aluminum
rewona [7]3 years ago
3 0
The answer is 13 neutrons
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A test tube contains a pure colourless gas. It is either oxygen,carbon dioxide,hydrogen or nitrogen. When a burning splint is pu
tekilochka [14]

The next test would be the lime water test.

Explanation:

If placing the gas in lime water will turn the solution milky, then the gas is most probably carbon dioxide, the lime water (Ca(OH)₂) turns milky due to the formation of solid CaCO₃ that is insoluble after reaction with carbon dioxide.

Carbon dioxide also puts out the flame in the splint test because it does not support combustion.

4 0
3 years ago
Convert 50 m to mm <br> using the method of dimensional analysis
shusha [124]

Answer:

Explanation:

meters has to go on the bottom of the bracket used for conversion

50m [ 1000 mm / 1 m]= 50000 mm The meters cancel

3 0
2 years ago
How many bones are in the human body
Pavel [41]
There are 206 bones in the human body
4 0
3 years ago
Read 2 more answers
What will be the observations for the reaction: CuSO4(aq) + NaOH(aq)? Its a two mark question so two observations at least.
julia-pushkina [17]
The chemical reaction would be:

<span>CuSO4(aq) + NaOH(aq) = Cu(OH)2(s) + Na2SO4(aq)

One observation would be the formation of a precipitate since one of the products is not readily soluble to aqueous solution. A formation of a blue precipitate will be observed.</span>
6 0
3 years ago
How many kilojoules are required to convert 115.0 g of ice at 0.0 ∘c to liquid water at 32 ∘c? the heat of fusion of water is 33
Ivanshal [37]
The answer is 53.8 kJ.
Solution:There are two major steps in converting ice to liquid water. It begins with a phase change when ice melts at 0.0°C, and then a temperature change when the liquid water rises in temperature from zero to 32°C.
The amount of heat involved with the phase change melting is given by
     q = (mass of water) (ΔHfus)
        = (115.0 g)(334 J/g) 
        = 38410 J = 38.41 kJ
The amount of heat involved with temperature change is 
     q = mcΔT
        = (115.0g)(4.184J/g°C)(32°C - 0.0°C)
        = 15397.12 J = 15.39712 kJ
Summing up the two values gives the total heat required to convert ice to liquid water:
     q = 38.41 kJ + 15.39712 kJ= 53.8 kJ
3 0
2 years ago
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