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nlexa [21]
3 years ago
6

What is the standard cell potential (E°cell) for the voltaic cell based on the reaction below? Sn2+ (aq) + 2Fe3+ (aq) → 2Fe2+ (a

q) + Sn4+ (aq)
Chemistry
1 answer:
Viefleur [7K]3 years ago
7 0

Answer:

+ 0.617 v

Explanation:

Sn2+ (aq) + 2Fe3+ (aq) → 2Fe2+ (aq) + Sn4+ (aq)

half-life

Sn²⁺ → Sn⁴⁺ + 2e⁻    oxidation       E ox = -0.154 v

2 Fe³⁺ + 2e⁻ → 2 Fe ²⁺   reduction  E red = + 0.771 v

E° cell = E°red + E° ox = +0.77 v + (-0.154 v) = + 0.617 v

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The tiara worn by Kate Middleton for her wedding to Prince William of England contains 888 diamonds and belongs to the British m
allsm [11]

Answer:

The number of atoms in the gemstones of that tiara is 8.9125\times 10^{24} atoms.

Explanation:

Number of diamonds ion tiara = 888

Mass of  each diamond = 1.0 carat = 0.200 g (given)

Mass of 888 diamonds in tiara:

888\times 0.200 g=177.600 g

Given that diamond is a form of carbon.

Atomic mass of  carbon atom = 12 g/mol

Moles of 77.600 g of carbon =\frac{177.600 g}{12 g/mol}=14.800 mol

Number of atoms of carbon 14.800 moles:

14.800 mol\times 6.022\times 10^{23} atoms =8.9125\times 10^{24} atoms

The number of atoms in the gemstones of that tiara is 8.9125\times 10^{24} atoms.

5 0
3 years ago
If you hold a backpack in your hand, the force of gravity pulls it downward. What force keeps it from falling to the ground?
Deffense [45]

Answer:

The force of the gases pushes downward at the same time that the gases push the rocket upwards. 1.

Explanation:

7 0
2 years ago
Which law relates to the ideal gas law?​
ella [17]

Answer:

equation (4.16) depends on Boyle's law and Charles' law. The above relates the adjustment in perfect gas volume to the progressions in winning weight and temperature, separately. Moreover, equation (4.16) is alluded to as the condition of state for a perfect gas.

hope it helps:))

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3 years ago
A 16.4 g sample of calcium chloride is dissolved in enough water to make 750.0 mL of solution. Calculate the molarity of calcium
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SIMP FOR LEVI AKRAMEN
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d perovskite single crystals with suppressed ion migration for high-performance planar-type photodetectors, small
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Due to their improved charge transfer and great environmental stability, 2D Dion-Jacobson (DJ) perovskites have recently received a lot of attention.

Unfortunately, due to the scarcity of high-quality single crystals for precise measurements, their fundamental optoelectronic capabilities are mainly unknown. Here, a reactive, low-temperature-gradient crystallization method is created using 1,4-butanediammonium as a short-chain insulating spacer to generate high-quality 2D perovskite single crystal (BDAPbI4). It is discovered that the BDAPbI4 single crystal exhibits a direct bandgap with effective charge collection (μτ = 1.45 × 10−3 cm2 V−1). The BDAPbI4 single crystal in particular exhibits the expected high ion migration activation energy (0.88 eV).

Learn more about charge transfer here-

brainly.com/question/20342415

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3 0
2 years ago
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