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4 years ago

What is a short description of oxygenated blood flow ?

2 answers:

7 0

The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle of the heart, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.

lubasha [3.4K]4 years ago

6 0

the portion of the circulatory system which carries deoxygenated blood<span> away from the right ventricle of the heart, to the lungs, and returns </span>oxygenated blood<span> to the left atrium and ventricle of the heart. I hope this helps, good luck. </span>

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Calculate the volume, in milliliters, of a 0.211 M solution of NaOH that will completely neutralize each of the following. 2.30

xenn [34]

Answer:

$V_{base}=17.9mL$

Explanation:

Hello,

In this case, as the reaction between sodium hydroxide and sulfuric is:

$2NaOH+H_2SO_4\rightarrow Na_2SO_4+2H_2O$

We can notice a 2:1 molar ratio between the base and the acid, for that reason for the titration at the equivalence point we find:

$n_{base}=2*n_{acid}$

Which in terms of concentrations and volumes is:

$M_{base}V_{base}=2*M_{acid}V_{acid}$

In such a way, solving for the required volume of base we find:

$V_{base}=\frac{2*M_{acid}V_{acid}}{M_{base}} \\\\V_{base}=\frac{2*0.820M*2.30mL}{0.211M}\\ \\V_{base}=17.9mL$

Best regards.

7 0

3 years ago

HEYYY FAM IS THIS RIGHT

Otrada [13]

Answer: A reversible reaction is a reaction that takes place in back and front directions. If the reaction were to reach equilibrium, the rate of forward direction would be equal to that of the reverse reaction.

Explanation:

Reversible reactions :

These are the reaction in which reactants reacts to give product and products reacts to give reactants as a product in return.

$A+B\leftrightharpoons C+D$

In above equation, 'A' and 'B' are reacting together to give 'C' and 'D', as products and vice-versa.
When the above reaction reaches equilibrium the rate of forward and backward reaction becomes equal.

3 0

3 years ago

Chemistry question. Image attached.

Stells [14]

Answer:

The answer to your question is given below

Explanation:

The balanced equation for the reaction is given below:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

1. Writing an expression for the equilibrium constant, K.

The equilibrium constant, K for a reaction is simply the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.

Thus, we can write the equilibrium constant, K for the reaction as follow:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

K = [CaCO3] [H2]⁴ / [CaO] [CH4] [H2O]²

2. Based on the value of K, more products will be in the equilibrium mixture since the value of K is a positive large number.

6 0

3 years ago

Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?

Ksivusya [100]

Answer:

The volume of a ball that is 24 cm across is :

d). v = four-thirds pi 12 cubed

Explanation :