The surface area would be 25cm, while the vloume would be
or length×width×height
125cm cubed
Answer:
0.51 moles of gas
Explanation:
Given data:
Pressure of gas = 50.65 kpa (50.65 /101 = 0.5 atm)
Volume of gas = 25 L
Temperature of gas = 300 K
Number of moles of gas = ?
Solution:
The given problem will be solve through ideal gas equation,
PV = nRT
P = pressure
V = volume
n = number of moles
R = general gas constant
T = temperature
Now we will put the values.
0.5 atm × 25 L = n × 0.0821 atm.L /mol.K × 300 K
12.5 atm. L = n × 24.63 atm.L /mol
n = 12.5 atm. L /24.63 atm.L /mol
n = 0.51 mol
Usually a ball would roll toward the side that's lower, so if you had a ramp and put it on the side that was lower, then the ball would change direction and go the opposite direction
The answer is option A.
That is A: They have shown how lead can build up and cause damage in the human body.
Lead had been used in plumbing and other products since ancient times. chemists showed that how lead can build up and cause damage in the human body.
Chemists have discovered lead toxicity and showed that it can cause damage in the human body since it is a toxic element.