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Sindrei [870]
3 years ago
14

I’m stup!d. please help:(

Chemistry
1 answer:
svlad2 [7]3 years ago
5 0
I think it’s AIF3, hopefully.....
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When a plant _____, roots grow and a seedling begins to grow?
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stem

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Ceres is a dwarf planet located in the main asteroid belt. Which statement about Ceres is false
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Which accurately completes the statement? Conduction involves the transfer of ___________ due to the movement of particles. Grou
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conduction involves the transfer of molecules due to the movement of particles

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Consider the decomposition of a metal oxide to its elements, where M represents a generic metal. M 3 O 4 ( s ) − ⇀ ↽ − 3 M ( s )
Citrus2011 [14]

Answer:

a) ΔGrxn = 6.7 kJ/mol

b) K = 0.066

c) PO2 = 0.16 atm

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M₂O₃ = 2M + 3/2O₂

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ΔGrxn = ∑Gproducts - ∑Greactants

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M₂O₃ = -6.7 kJ/mol

M = 0

O₂ = 0

deltaG_{rxn} =((2*0)+(3/2*0))-(1*(-6.7))=6.7kJ/mol

b) To calculate the constant we have the following expression:

lnK=-\frac{deltaG_{rxn} }{RT}

Where

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R = 8.314 J/mol K

lnK=-\frac{6700}{8.314*298} =-2.704\\K=0.066

c) The equilibrium pressure of O₂ over M is:

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3 0
3 years ago
Please help!
ANEK [815]

Answer:

A- Physical, B- Chemical, C- chemical, D- Physical

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A is physical because you can see it changing its form is changing.

B is Chemical because a new substance is formed creating the orange color of rust.

C is a Chemical reaction because it is being broken down so the banana itself is changing not just how we see it.

D is physical because we are just changing the shape/ size of the item, not anything to do with its substances.

8 0
2 years ago
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