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tatuchka [14]
3 years ago
7

A sample of aluminum weighs 100 grams and has a volume of 37.03 cm. What is the density of

Chemistry
1 answer:
Alexxandr [17]3 years ago
6 0

Answer:

2.7005 g/cm²

explanation: as we know density=mass/volume

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Part a the disproportionation of mn2+(aq) to mn(s) and mno2(s) in acid solution at 25 ∘c. calculate δg∘rxn.
ollegr [7]

Answer:

ΔG^{o} = -461198.3 J

Explanation:

Gibbs free energy is defined as the energy associated with a given chemical reaction which can be used to do work. Firstly, we need to figure out the chemical equation for the given problem. For the given problem, the chemical equation is:

Mn^{2+} _{(aq)} + 2e^{-}⇒Mn_{(s)}      E^{o} = -1.18 V

Mn^{2+} _{(aq)} + H_{2}O ⇒MnO_{2(s)} +4H^{+} + 2e^{-}E^{o} = -1.21 V

The addition of the two E^{o} gives the E_{cell} of the equation, i.e. -1.18-1.21 = -2.39 V.

Then, using the equation for ΔG^{o}, we have:

ΔG^{o} = n*F*E^{o} = 2*96485*-2.39 = -461198.3 J

4 0
4 years ago
What is the pauli exclusion principle and how does it apply to electron configuration?
mamaluj [8]

Answer:

pauli exclusion principle states that no two electrons in the same orbital can have the same spin.

Explanation:

this means you can't have 2 up arrows or 2 down arrows in your box

3 0
3 years ago
What is the representative particle for silicon
valentina_108 [34]
<span>The representative particle for silicon is atom of silicon.
</span>Representative particles can be atoms, molecules, formula units or ions. Representative particles depend on the nature of the substance. Silicon is chemical element made of atoms.
For sodium chloride (NaCl) for example, representative particles are ions.
7 0
3 years ago
Most of the mice in an experiment were exactly 8 cm long. This means that the _____ of the lengths of the mice MUST be equal to
Lisa [10]
B, mode since mode represents the data is the most frequent in the whole set, which in this case is 8cm
4 0
3 years ago
How many moles of chlorine could be produced by decomposing 157g NaCl? 2NaCl --&gt; 2Na+Cl2
ss7ja [257]
Here is the answer for your question which the mole of chlorine is 1.34

5 0
2 years ago
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