I do believe it is C. wave length <span />
Blood is a buffer solution of bicarbonate (HCO₃⁻) and carbon dioxide (CO₂). The Henderson equation which relates the concentration of HCO₃⁻ and CO₂ is given below:
=
.
Respiring cell releases CO₂ in blood stream and that CO₂ on reaction with water molecule produces H₂CO₃ which is a weak base and its conjugate base is HCO₃⁻.
CO₂ + 2H₂O⇄ HCO₃⁻ + H₃O⁺
pH of the buffer solution (the blood) depends only on the ratio of the amount of CO₂ to the amount of HCO³⁻. [So, due to respiration produced CO₂ will get dissolved in water and favours the equilibrium towards forward direction. Then immediately HCO₃⁻ reacts with HCO₃⁻ and starts producing CO₂.]This ratio remains relatively constant because the concentrations HCO3- and CO2 are very large compared to the amount of CO₂ produced to the blood from respiring cells. So,
of blood does not change.
Answer:
3
Step-by-step explanation:
Hence, the given number has 3 significant figures.
Answer : The vapor pressure of water at
is 1.01 atm.
Explanation :
Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.
![P\propto \frac{1}{V}](https://tex.z-dn.net/?f=P%5Cpropto%20%5Cfrac%7B1%7D%7BV%7D)
or,
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
= initial pressure = ?
= final pressure = 750 torr = 0.987 atm (1 atm = 760 torr)
= initial volume = 1.95 L
= final volume = 2.00 L
Now put all the given values in the above equation, we get:
![P_1\times 1.95L=0.987atm\times 2.00L](https://tex.z-dn.net/?f=P_1%5Ctimes%201.95L%3D0.987atm%5Ctimes%202.00L)
![P_1=1.01atm](https://tex.z-dn.net/?f=P_1%3D1.01atm)
Therefore, the vapor pressure of water at
is 1.01 atm.
• Animals such as prairie dogs, can cause physical weathering by digging burrows.