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Alex17521 [72]
3 years ago
5

Fill in blanks plz help 23 points

Chemistry
1 answer:
shtirl [24]3 years ago
6 0
I'm not sure about the second one so sorry for that! But, the other three blanks are length, graduated cylinder, and matter (I believe its matter, I'm sorry if thats wrong)

Again, I'm sorry I couldn't answer one and accurately answer the other one but I hope this helps you!
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Zinc is used as a coating for steel to protect the steel from environmental corrosion. If a piece of steel is submerged in an el
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Answer:

A) 3.17 g of Zn

Explanation:

Let's consider the reduction of Zn(II) that occurs in an electrolysis bath.

Zn⁺²(aq) + 2e⁻ → Zn(s)

We can establish the following relations:

  • 1 min = 60 s
  • 1 A = 1 C/s
  • The charge of 1 mole of electrons is 96,468 C (Faraday's constant).
  • When 2 moles of electrons circulate, 1 mole of Zn is deposited.
  • The molar mass of Zn is 65.38 g/mol

The mass of Zn deposited under these conditions is:

24min \times \frac{60s}{1min} \times \frac{6.5C}{s} \times \frac{1mol\ e^{-} }{96,468C} \times \frac{1molZn}{2mol\ e^{-}}  \times \frac{65.38g}{1molZn} = 3.17 g

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3 years ago
For the complete combustion of 1.000 mole of methane gas at 298 K and 1 atm pressure, ΔH° = -890.4 kJ/mol. What will be the amou
anastassius [24]
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That might be wrong

3 0
3 years ago
Please balance the equation, putting the correct coefficient in each box.
Mariulka [41]

Answer: Bi(OH)_3+3HNO_3\rightarrow 3H_2O+Bi(NO_3)_3

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced equation will be:

Bi(OH)_3+3HNO_3\rightarrow 3H_2O+Bi(NO_3)_3

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When cations and anions join, they form what
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Answer:

ionic

Explanation:

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