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ira [324]
2 years ago
9

Zinc is more active than cobalt and iron but less active than aluminum. Cobalt is more active than nickel but less active than i

ron. Which of the following correctly lists the elements in order of increasing activity?
a) Zn < Al < Co < Ni < Feb) Co < Ni < Fe < Zn < Alc) Fe < Ni < Co < Al < Znd) Ni < Co < Fe < Zn < Ale) Ni < Fe < Co < Zn < Al
Chemistry
1 answer:
ziro4ka [17]2 years ago
8 0

Answer:

d) Ni < Co < Fe < Zn < Al

Explanation:

electronegativity of Aluminium  1.6

electronegativity of Zinc  1.7

electronegativity of iron  1. 83

electronegativity of Cobalt  1.88

electronegativity of Nickel  1.91

As the electronegativity of aluminium is lower as compared to other, so it will have high tendency to easily lose electron and that is why Aluminium is more reactive than the other mentioned

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What shape and bond angles would this molecule have in three dimensions?
Darya [45]

Answer : The shape and bond angle of the given molecule is, bent and 120^o respectively.

Explanation :

In the given molecule, 'Y' is the central atom and 'X' is the neighboring atom. In the given molecule, there are 4 electron pairs that means the hybridization will be sp^3 and the electronic geometry of the molecule will be tetrahedral.

But as there are two atoms around the central atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular and the bond angle will be, 120^o.

Hence, the shape and bond angle of the given molecule is, bent and 120^o respectively.

5 0
2 years ago
Read 2 more answers
What is the purpose of adding naoh to the solution of acetylsalicylic acid?
JulijaS [17]
<span>Answer: You shape the sodium salt of acetylsalicylic corrosive and make it considerably more water solvent. You could likewise make the compound more nucleophilic and respond the sodium salt with an alkyl halide to shape an ester.</span>
6 0
3 years ago
1) Calculate the empirical formula of a compound with 36g of carbon and 96g of oxygen.
grandymaker [24]

Answer:

C4H6

Explanation:

See attached table

Convert each of the masses into moles by dividing the mass by the molar mass of that element.  That yields 3.83 moles of C and 6 moles of O.  I rounded up the C to 4 moles to result in an empirical formula of C4H6

5 0
2 years ago
Which is more dense a pound of rice or a pond of cement
Ann [662]
A pond of cement is more dense
4 0
3 years ago
At a temperature of -33.0 degrees C, a sample of confined gas exerts a pressure of 53.3 kPa. If volume remains constant, at what
Rasek [7]

Answer: 598.9K = 325.9°C

Explanation:

P1= 53.3kPa T1= -33+273=240K

P2=133kPa , T2= ?

Applying P1/T1 = P2/T2

Substitute and Simplify

53.3/240 = 133/T2

T2= 598.9K = 325.9°C

4 0
2 years ago
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