Answer: 38L
Explanation:
Initial volume of helium V1 = 35 L
Initial temperature T1 = 20°C
Convert temperature in Celsius to Kelvin
(20°C + 273 = 293K)
New volume V2 = ?
New Temperature T2 = 45°C
(45°C + 273 = 318K)
Since, volume and temperature are involved while pressure is constant, apply the formula for Charles' Law:
(V1/T1) = (V2/T2)
35L/293K = V2/318K
0.119 = V2/318K
To get V2, cross multiply
V2 = 0.119 x 318
V2 = 38L
Thus, the new volume of the balloon is 38 liters
Answer:
testosterone, a steroid hormone
molecular oxygen (O₂)
Explanation:
Phospholipid Bi layer is permeable to some molecules and it will allow them to pass through it freely. Molecules which are soluble in water (polar molecules or hydrophillic molecules) are less permeable through phospholipid Bi layer . In given options Molecular Oxygen and Testosterone( steroid Hormone) are permeable through the layer because of its lipid solubility and size of the molecule .
In the given question we need to convert 0.075 meter into centimeter. For this purpose we need to know the relation between meter and centimeter. Then only this problem can be solved and the correct answer reached.
Now we know that
1 meter = 100 centimeter
Then
0.075 meter = [(100/1) * 0.075] centimeter
We know that any number when divided by 1 gives the same number.
So
0.075 meter = (100 * 0.075) centimeter
= (100 * 75/1000) centimeter
= (7500/1000) centimeter
= (75/10) centimeter
= 7.5 centimeter.
So from all the given options the correct answer to the question is 7.5 centimeter.
Acids are acids and alkalines are alkalines.
Isolated atom basically means atom which exists separatly without any bonding with other atoms. It can only be acheived experimentaly because normally all atoms are bonded together by strong nuclear forces and its really hard to isolate a single atom.
