Answer:
a) Keq = 4.5x10^-6
b) [oxaloacetate] = 9x10^-9 M
c) 23 oxaloacetate molecules
Explanation:
a) In the standard state we have to:
ΔGo = -R*T*ln(Keq) (eq.1)
ΔGo = 30.5 kJ/moles = 30500 J/moles
R = 8.314 J*K^-1*moles^-1
Clearing Keq:
Keq = e^(ΔGo/-R*T) = e^(30500/(-8.314*298)) = 4.5x10^-6
b) Keq = ([oxaloacetate]*[NADH])/([L-malate]*[NAD+])
4.5x10^-6 = ([oxaloacetate]/(0.20*10)
Clearing [oxaloacetate]:
[oxaloacetate] = 9x10^-9 M
c) the radius of the mitochondria is equal to:
r = 10^-5 dm
The volume of the mitochondria is:
V = (4/3)*pi*r^3 = (4/3)*pi*(10^-15)^3 = 4.18x10^-42 L
1 L of mitochondria contains 9x10^-9 M of oxaloacetate
Thus, 4.18x10^-42 L of mitochondria contains:
molecules of oxaloacetate = 4.18x10^-42 * 9x10^-9 * 6.023x10^23 = 2.27x10^-26 = 23 oxaloacetate molecules
Answer:
very confused but, hope this helps in a way-:
What can be the Results and conclusion to this experiment?
1) Observation: Plants grow well in the ant habitats.
2) Question: Does ants help in plant's growth?
3) Hypothesis: There is a mutualistic relationship between plants and ants.
4) Experiment: This hypothesis can be experimented using ecological study design. The growth of two plants, one growing in the presence of ants and the other in the absence of ants are compared. All other variables like temperature, moisture, soil and nutrients are maintained constant. The growth in plants are measured after two months. It will be observed that the growth of plants in the presence of ants is more than the other plant. Ants help in aerating the soil and protects the plant from herbivores, and fungal attack.
Answer:
a). iron ore - is a heterogeneous substance.
b). quartz - is a homogeneous substance.
c). granite - is a heterogeneous substance.
d). energy drink - is a heterogeneous substance.
e). oil-and-vinegar salad dressing - is a heterogeneous substance.
f). salt - is a homogeneous substance.
g). rainwater - is a heterogeneous substance.
h). nitrogen - is a homogeneous substance.
Explanation:
a). iron ore - is a heterogeneous substance as iron core contains iron and other impurities
b). quartz - is a homogeneous substance as it is only made up of carbon
c). granite - is a heterogeneous substance as it is made up of multiple minerals.
d). energy drink - is a heterogeneous substance as it contains various substances mixed in it
e). oil-and-vinegar salad dressing - is a heterogeneous substance as oil and vinegar itself are different compounds
f). salt - is a homogeneous substance as it only contains one type of molecule
g). rainwater - is a heterogeneous substance as it contains water and other minerals
h). nitrogen - is a homogeneous substance as it is only made of one type of molecule.
Acetic acid, phosphoric acid, hydrochloric acid.
sodium bicarbonate, magnesium hydroxide, aluminum hydroxide
calcium carbonate, sodium bicarbonate, magnesium sulfate.
Answer:
B
Explanation:
A metathesis reaction is a reaction in which cations and anions change partners.
A general equation for a metathesis is
AX+CY→AY+CX, where A and C are cations, and X and Y are anions.
There are three possible products of a metathesis reaction.
A. an insoluble (solid) precipitate
B. water (from neutralization reaction)
C. an insoluble gas that bubbles out of solution
Metathesis reactions are also called double replacement reactions and double displacement reactions.
