Three main radioactive elements are:
Uranium
Thorium
Radium
M/V=D
40.5/15=2.7
The density of the block of aluminum is 2.7 g/cm³.
Answer: 90 g O2
Explanation: soution attached:
Balance first the chemical equation
CH4 + O2 => CO2 +2H2O
Convert mass of CH4 to moles
Use the mole ratio of CH4 and O2 from the balanced equation.
Convert moles of O2 to mass using the molar mass of O2.
<span>First we write the reactants and the products in this manner shown below:
C5H12 + O2 = H20 + CO2
This equation is not yet balanced so we add coefficients to make the equation balance:
</span><span>C5H12 + 8O2 = 6H20 + 5CO2
</span>
The principle of concern here is the Law of Conservation of Mass.
<span>This law states that for a system that is isolated, the mass is not created nor destroyed. Hence for this system, the amount of CO2 and water created is exactly from the reactants pentane and oxygen.
</span><span> </span><span />
Each gas dissolved in the blood diffuses between the blood and its surroundings based on differences in the partial pressure and diffusion occurs until equilibrium is reached.
<h3>What is the gas exchange in bloodstream?</h3>
The gas exchange refers to the process by which oxygen is absorbed by red blood cells and carbon dioxide is removed through the respiratory system.
The process of gas exchange is carried out due to the differential diffusion rates of gases in the bloodstream (O2 and CO2), which facilitates the transference of these gases.
In conclusion, each gas dissolved in the blood diffuses between the blood and its surroundings based on differences in the partial pressure and diffusion occurs until equilibrium is reached.
Learn more about gas exchange in bloodstream here:
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