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Lady_Fox [76]
2 years ago
5

1. Elisa feels tired because she has a condition that affects whether the right molecules are getting to her cells. If her body

were functioning correctly, this is what would happen with oxygen:
2.If her body were functioning correctly, this is what would happen with starch/glucose:
Chemistry
1 answer:
Liono4ka [1.6K]2 years ago
4 0

Answer:

Her oxygen would be traveling throughout her body and carbon dioxide will be released every time she breathes out. The oxygen will come in through the respiratory system which is a body system that helps you breathe with lungs, which then delivers the oxygen molecules to other organs and body systems. Oxygen will go through the circulatory system and circle around until the some oxygen goes in the cells or the stored glucose. Then some Oxygen molecules go into the cells and make energy with Glucose. She would have higher glucose/ healthy sugar to be considered healthy. But if she was healthy she would have glucose in her digestive system( where the food goes when you swallow it some of the parts are the stomach and intestines both small and large) which will be transferred to the circulatory system then it will circle around the system

Explanation:

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When a known quantity of compound, at a known concentration, is added to a known volume of another compound to determine the con
Vladimir [108]

Answer:

A titration

Explanation:

A common example of a titration is when we have an acid of unknown concentration, so we add a known volume of a base of known concentration. This process lets us determine the concentration of the acid.

By definition, a titration is a quantitative analysis, as we determine how much of an analyte is there in a sample. However, <u>there are quantitative analyzes which are not titrations</u>. This is why the most appropiate answer is<em> a titration</em>.

5 0
2 years ago
Name the type of reaction and give the coefficients needed to balance the following skeleton reaction: ___Mg + ___Fe2O3 → ___Fe
Katen [24]

the answer is c a tries to trick people by using the same numbers


6 0
2 years ago
Read 2 more answers
Calculate the pressure exerted by 66.0 g of CO2 gas at -14.5°C that occupies a volume of 50.0 L
Anestetic [448]

Answer:

Pressure = 0.64 atm

Explanation:

Use Ideal Gas Law PV = nRT => P = nRT/V

n = moles CO₂(g) = 66g/44g/mol = 1.5 mol CO₂

R = Gas Constant = 0.08206 L·atm/mol·K

T = Temperature = -14.5°C = (-14.5 + 273)K = 258.5 K

V = 50.0 Liters

P = (1.5 mol)(0.08206 L·atm/mol·K)(258.5 K)/(50.0 L) = 0.64 atm

5 0
2 years ago
Which of the following best describes how wireless telephones are able to receive and produce sound from one person to another?
alina1380 [7]

D.

Electromagnetic waves are received and then vibrate a speaker which produces sound waves.

Explanation:

The telephone has a receiver-transducer component that can receive electromagnetic wave - radio waves spectrum- and transform them into electric energy. This electric energy is then transformed into sound energy by a speaker. This is how we're able to listen to a phone call.

The opposite happens when we speak on the phone. The sound energy is transformed into electric energy by a microphone – the reverse of a speaker.  The transducer now changes the electric energy into electromagnetic waves that travel through space to the recipient in the phone conversation.

8 0
2 years ago
A chemist fills a reaction vessel with 0.750 M lead (II) (Pb2+) aqueous solution, 0.232 M bromide (Br) aqueous solution, and 0.9
Ronch [10]

Answer:

The free energy = -20.46 KJ

Explanation:

given Data:

Pb²⁺ = 0.750 M

Br⁻ = 0.232 M

R = 8.314 Jk⁻¹mol⁻¹

T = 298K

The Gibb's free energy is calculated using the formula;

ΔG = ΔG° + RTlnQ -------------------------1

Where;

ΔG° = standard Gibb's freeenergy

R = Gas constant

Q = reaction quotient

T = temperature

The chemical reaction is given as;

Pb²⁺(aq) + 2Br⁻(aq) ⇄PbBr₂(s)

The ΔG°f are given as:

ΔG°f (PbBr₂)  = -260.75 kj.mol⁻¹

ΔG°f (Pb²⁺)   = -24.4 kj.mol⁻¹

ΔG°f (2Br⁻)    = -103.97 kj.mol⁻¹

Calculating the standard gibb's free energy using the formula;

ΔG° = ξnpΔG°(product) - ξnrΔG°(reactant)

Substituting, we have;

ΔG° =[1mol*ΔG°f (PbBr₂)] - [1 mol *ΔG°f (Pb²⁺) +2mol *ΔG°f (2Br⁻)]

ΔG° =(1 *-260.75 kj.mol⁻¹) - (1* -24.4 kj.mol⁻¹) +(2*-103.97 kj.mol⁻¹)

      = -260.75 + 232.34

     = -28.41 kj

Calculating the reaction quotient Q using the formula;

Q = 1/[Pb²⁺ *(Br⁻)²]

   = 1/(0.750 * 0.232²)

  = 24.77

Substituting all the calculated values into equation 1, we have

ΔG = ΔG° + RTlnQ

ΔG = -28.41 + (8.414*10⁻³ * 298 * In 24.77)

     = -28.41 +7.95

    = -20. 46 kJ

Therefore, the free energy of reaction = -20.46 kJ

8 0
2 years ago
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