Answer:
Time = 3.27s
Explanation:
Time = Distance / Speed
Time = 42.2 / 12.9 = 3.2713
When you multiply the number of significant figures in the result is the same as the number with the least significant figures.
In this case 42.2 has 3 significant figures and 12.9 also has 3 significant figures, therefore the answer must have 3 significant figures too.
Time = 3.27 s
Answer:
0.92 g
Explanation:
Given data:
Percentage of NaCl = 1.6%
Amount of NaCl present in 57.2 g = ?
Solution:
1.6% of 57.2 g NaCl:
1.6/100× 57.2 g
0.92 g
So in 57.2 g 1.6% of NaCl is 0.92 g.
Answer:
C
Explanation:
Hydronium (H₃O+) is the same as H+ (aq) because of the same net charge. The acidic property of a solvent or solution is governed the amount of H+ ion in it. The higher the H+ ions the lower the pH. In pure water H₃O+ and OH- are in equal amount. More of OH- ions turn the solution basic.
I really dont know. please add more details for answers. i will be back as soon as you post details!
The ideal gas law relates the pressure (P), volume (V), number of moles (n), and temperature (T) of a given ideal gas through the equation,
PV = nRT
If we are to determine the volume of the gas, we derive the equation such that it takes the form of,
V = nRT/P
Substituting,
V = (0.425 mol)(0.0821 L.atm/mol.K)(900 + 273 K) / 3 atm
V = 13.64 L
Thus, the volume of the ideal gas is approximately 13.64 L.
