the answer to this question is B.
Answer:
2408.1 °C
Explanation:
Given data:
Mass of oxygen = 1.70 g
Volume occupy = 9.75 L
Pressure of gas = 799 torr (799/760 = 1.1 atm)
Temperature = ?
Solution:
Formula:
PV = nRT
First of all we will determine the number of moles of oxygen.
Number of moles = mass/ molar mass
Number of moles = 1.70 g/ 32 g/mol
Number of moles = 0.05 mol
Now we will put the values.
R = general gas constant = 0.0821 atm.L/ mol.K
T = PV/nR
T = 1.1 atm× 9.75 L /0.05 mol ×0.0821 atm.L/ mol.K
T = 10.725 /0.004
T = 2681.25 K
kelvin to °C
2681.25 K - 273.15 = 2408.1 °C
The chloroplasts convert radiant energy into chemical energy. Mitochondria convert food into energy.
Mitochondria = Animal Cell ONLY
Chloroplasts = Plant Cell ONLY
Hope this helps you! :)
Hey there!
Your answer is B. MgCl.
This is because this isn't an actual existing compound.
Water (H₂O) and magnesium chloride (MgCl₂) are both real compounds, but the number of electrons does not line up to make MgCl possible.
Hope this helps!
PH is the scale of measurement to check either the solution is acidic or basic. if the pH value is greater than 7, the solution is towards basicity and if the pH value is less than 7, the solution is towards acidity.
pKa is the dissociation constant and it is used to describe the change in pH value, when pKa is equal to pH: 50% of the ionizable group is protonated and 50% of the enzymes will be active.
So 50% of the enzymes will be active.
