You go out to dinner and the bill comes to $ 26.37. How much should you tip if you want the tip to be 19.0 % of the bill?
1 answer:
You might be interested in
Answer:
Concentration solution A was 0.5225 M
Explanation:
10.00 mL of solution A was diluted to 50.00 mL and yields 50.00 mL of solution B
According to laws of dilution-
where, and
are concentration of solution A and B respectively
and
are volumes of solution A and B respectively
Here = 0.1045 M,
= 50.00 mL and
= 10.00 mL
Hence,
So, concentration solution A was 0.5225 M
Answer:
Explanation:
Hello.
In this case, taking into account that HCl has one molecule of hydrogen per mole of compound which weights 36.45 g/mol, we compute the number of molecules of hydrogen in hydrochloric acid by considering the given mass and the Avogadro's number:
Now, from the 180 g of water, we see two hydrogen molecules per molecule of water, thus, by also using the Avogadro's number we compute the molecules of hydrogen in water:
Thus, the total number of molecules turns out:
Regards.