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soldier1979 [14.2K]
2 years ago
14

Describe a chemical test for water-

Chemistry
1 answer:
Mila [183]2 years ago
6 0

Answer:

Anhydrous copper (II) sulphate is white because it has no water in it. When drops of water are added, copper (II) sulphate turns blue. This colour change can be used to detect the presence of water (or water vapour).

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A radioactive isotope of vanadium, V, decays by producing a  particle and gamma ray. The nuclide formed has the atomic number:
Slav-nsk [51]

C) 24

Explanation:

When a radioactive isotope of Vanadium, V decays by producing a beta particle and gamma rays, the atomic number will be 24.

 Vanadium is the 23rd element on the periodic table.

It has a mass number of 51.

              atomic number is 23

                                      ⁵¹₂₃V

  A beta particle is symbolized as °₋₁B

   Gamma rays are represented by Y

Now to the equation:

         ⁵¹₂₃V    →    ₐⁿK   +   °₋₁B  +    Y

In a nuclear reaction the mass an atomic number is conserved

   51 = n + 0

            n = 51

   23 = a -1

        a = 24

We can see that the nuclide formed will have an atomic number of 24

learn more:

Transmutation brainly.com/question/3433940

#learnwithBrainly

6 0
3 years ago
Which element is most reactive sodium,magnesium, or aluminum and why?
ludmilkaskok [199]
Magnesium would be more reactive.
6 0
3 years ago
How many moles of sodium carbonate in 18.06x10 to the power 22
igor_vitrenko [27]

Answer:

moles  =  \frac{ number  \: of \: particles}{6.02 \times  {10}^{23} }

=1.806×10^22/6.02×10^23

=0.03 moles

hope this helps :)

4 0
3 years ago
Read 2 more answers
Write a balanced overall reaction from these unbalanced half-reactions.
ANTONII [103]
The first half reaction is:
Sn+  ->  Sn2+

You add 1 electron on the right side:
Sn+  ->  Sn2+ + 1e-

The second half reacation is:
Ag+  -> Ag

You add 1 electron to the left side:
Ag+  +  1e-  -> Ag

Then, you combine both reactions to get the balanced overall reaction since both half reactions have 1 electrons on the right and left side, respectively. You get:
Sn+  +  Ag+  ->  Sn2+  + Ag
7 0
3 years ago
Read 2 more answers
An experiment produced 0.10 g CO2, with a volume of 0.056 L at STP. If the accepted density of CO2 at STP is 1.96 g/L, what is t
Pachacha [2.7K]
The density of CO2 getting from experiment is 0.1/0.056 = 1.79 g/L. The percent error of this is (1.96 -1.79)/1.96*100%=8.67%. So the approximate percent error is 8.67%.
3 0
3 years ago
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