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3 years ago

How does the body maintain the equilibrium between oxygen and hemoglobin at high altitudes?

1 answer:

5 0

Individuals who are both born and raised in high altitudes will have their bodies re-establish equilibrium shift by producing more hemoglobin, which allows for more oxygen to be bound to the heme protein and thus cause an equilibrium shift to the right.

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What are the effects of colonialism on Africa today?

Law Incorporation [45]

Colonialism made African colonies dependent by introducing a mono- cultural economy for the territories. It also dehumanized African labour force and traders. It forced Africans to work in colonial plantations at very low wages and displaced them from their land

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3 years ago

A chemical solution contains 2% salt. how much salt is in 4 ml of solution?

Ivenika [448]

Just do 0.02 * 4 and you get 0.08 ml or 80 microliter

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3 years ago

Attempt 3 During an experiment, a student adds 2.90 g CaO 2.90 g CaO to 400.0 mL 400.0 mL of 1.500 M HCl 1.500 M HCl . The stude

kondor19780726 [428]

Answer:

Explanation:

Equation of the reaction:

CaO(s) + 2H+(aq) -----> Ca2+(aq) + H2O(g)

The ∆Hrxn would be for one mole of CaO reacted or 2 moles of H+, whichever is the limiting reactant.

Number of moles = mass ÷ molar mass

Molar mass of CaO = 40 + 16

= 56 g/mol

moles of CaO = 2.90/56

= 0.0518 mol

Number of moles = concentration × volume

moles of HCl = 400 × 10^-3 × 1.500 = 0.6 moles

Moles of HCl = moles of H+

From the equation, 1 mole of CaO reacted with 2 moles of H+ to give 1 mole of water.

To find the limiting reagent,

0.6 mole of H+/2 moles of H+ × 1 mole of CaO

= 0.3 moles of CaO(> 0.0518 moles)

So, CaO is limiting reactant.

∆H = m × Cp × ∆T

m = density × volume

= 400 × 1

= 400 g

Cp = 4.184 J/g-ºC

∆T = +6 ºC

∆H = 400 × 4.184 × 6

= 10041.6 J

Since the reaction is exothermic,

∆Hrxn = -∆H/mol(CaO)

= -10041.6/0.0518

= -193853 J

= -193.9 kJ/mol.

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3 years ago

Is cereal soup? and Is an hot dog a sandwich?...

weeeeeb [17]

Answer: Cereal is considered a soup and a hot dog is considered a

sandwich.

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3 years ago

11. In TLC analysis of ferrocene and acetylferrocene (on silica TLC plate) which prediction is correct: A) ferrocene is more pol

yaroslaw [1]

Answer:

Alternative C would be the correct choice.

Explanation:

The dual compounds were evaluated on something like a TLC plate through three separate additives in conducting a TLC study of ferrocene versus acetylferrocene.
The polar as well as nonpolar ferrocene where nonpolar is about 0.63 with the maximum $R_f$ value, and indeed the polar is somewhere around 0.19 with $R_f$ .
TLC plate (30:1 toluene/ethanol) established with.

The other three choices are not related to the given circumstances. So that option C would be the appropriate choice.

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3 years ago