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Romashka [77]
3 years ago
9

Which property describes a mixture? It cannot be separated by physical methods. It has a single chemical composition. It cannot

have more than one state of matter. It cannot be described by a chemical symbol or formula.
Chemistry
2 answers:
natima [27]3 years ago
7 0

Answer:

it cannot be separated by physical methods

Explanation:

katrin [286]3 years ago
7 0
A: It cannot be separated by physical methods.
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For a given reaction, ΔS = +106 J/mol ⋅ K, and the reaction is spontaneous at temperatures above the crossover temperature, 446
solniwko [45]

Answer:  47.276 kJ/mol

Explanation:

According to Gibb's equation:

\Delta G=\Delta H-T\Delta S

\Delta G = Gibbs free energy  

\Delta H = enthalpy change

\Delta S = entropy change  = +106 J/mol

T = temperature in Kelvin  = 446 K

\Delta G= +ve, reaction is non spontaneous

\Delta G= -ve, reaction is spontaneous

\Delta G= 0, reaction is in equilibrium

\Delta H=T\Delta S

\Delta H=T\Delta S

\Delta H=446K\times +106J/Kmol=47276J/mol=47.276kJ/mol   (1kJ=1000J)

Thus the value of ΔH = 47.276 kJ/mol, assuming that ΔH and ΔS do not vary with temperature.

7 0
3 years ago
The chemical equation of photosynthesis includes 6O2. What does the small number after the O represent?
blondinia [14]
Its the number of Oxygen molecules
3 0
4 years ago
Still need a good answer heterogeneous vs homogeneous, don't copy from web pls.
pantera1 [17]

Answer:

homogenous is a uniform and consistent mixture ; heterogenous is a mixture that is non-uniform

Explanation:

usually if you can separate the mixture/particles it is heterogenous.  For example, pizza is heterogenous because you can separate the dough from the tomato sauce from the cheese.  vinegar is homogenous (cannot separate mixture)

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3 years ago
Biochemical reactions in your cells occur best at approximately which temperature
timama [110]

Answer:

38°c

Explanation:

Biochemical reactions takes place in our body at an approximate temprature of 38°c...

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3 years ago
Read 2 more answers
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