Answer:
185.1 m/s
Explanation:
The average speed of an object is a scalar quantity telling us how fast is the object moving over a certain distance.
This quantity is calculated as
where
d is the distance covered by the object
t is the time elapsed
v is the average speed
In this problem we have:
d = 1500.0 m is the distance covered by Ken
t = 8.1018 s is the time taken
Substituting into the formula, we find the average speed:
Planets don’t produce their own light. They reflect on the light of the sun in the same way our moon reflects sunlight.
Answer:
remains constant regardless of the pH
Explanation:
The pH refers to the hydrogen potential or hydrogen power that states the aqueous solution acidity. It varies from 0 to 14. The higher pH values denotes more basic solutions while on the other hand, the lower pH values denote more acidic
An acidic solution refers to a solution at which the hydrogen ions concentration is more than the hydroxide ions concentration
Therefore the ion product of water remains constant as the value of both hydrogen ions and hydroxide ions is relatively small as non-dissociated water concentration would remain the same.
Hence, the second option is correct
Answer:
The answer to your question is V2 = 2666.7 ml
Explanation:
Data
Pressure 1 = P1 = 2 atm
Volume 1 = V1 = 4000 ml
Pressure 2 = P2 = 3 atm
Volume 2 = V2 = ?
Process
To solve this problem use Boyle's law.
P1V1 = P2V2
-Solve for V2
V2 = P1V1 / P2
-Substitution
V2 = (2)(4000)/3
-Simplification
V2 = 8000 / 3
-Result
V2 = 2666.7 ml
-Conclusion
If we increase the pressure, the volume will decrease.
Molecular:
2HNO3 + Ba(OH)2 --> Ba(NO3)2 + 2H2O
Ionic: you need to know the solubility phases of all compounds for this step
2HNO3(aq) + Ba(OH)2(s) --> Ba(NO3)2(aq)+ 2H2O(l)
Only separate aqueous (aq)
2H+ + 2NO3- + Ba(OH)2(s) --> Ba 2+ + 2NO3- + 2H2O(l)
Net ionic: eliminate all compounds that are the same on both sides (2NO3-)
You are left with
2H+ + Ba(OH)2(s) --> Ba2+ + 2H2O(l)