Charlotte is driving at 56.0 mi/h and receives a text message. She looks down at her phone and takes her eyes off the road for 3
1 answer:
Answer:
Charlotte traveled 319.50 feet during this time.
Explanation:
Speed of the Charlotte's car = 56.0 miles/hour
1 hour = 3600 seconds
Then 56.0 miles/h :
Duration of time for which she took off her eyes from the road : 3.89 s
Distance covered in 3.789 seconds:
1 mile = 5280 ft
Charlotte traveled 319.50 feet during this time.
You might be interested in
Answer:
pH = 2.46
Explanation:
Hello there!
In this case, since this neutralization reaction may be assumed to occur in a 1:1 mole ratio between the base and the strong acid, it is possible to write the following moles and volume-concentrations relationship for the equivalence point:
Whereas the moles of the salt are computed as shown below:
So we can divide those moles by the total volume (0.021L+0.0066L=0.0276L) to obtain the concentration of the final salt:
Now, we need to keep in mind that this is an acidic salt since the base is weak and the acid strong, so the determinant ionization is:
Whose equilibrium expression is:
Now, since the Kb of C6H5NH2 is 4.3 x 10^-10, its Ka is 2.326x10^-5 (Kw/Kb), we can also write:
Whereas x is:
Which also equals the concentration of hydrogen ions; therefore, the pH at the equivalence point is:
Regards!