right angle triangle hypotunuse i dnt lnow sorry bro i need pointa
Answer:
161 atoms
Explanation:
A sample of propane, C3H8, contains 14.6 moles of carbon atoms. How many total moles of atoms does the sample contain
every molecule of propane contains 3+8=11 atoms
so
14.6 moles contain 14.6 X 11 = 161 atoms
The correct answer is 0.44ml
For information, promethazine is a neuroleptic antihistamine inhibitor of H1 receptors of the phenothiazine family. It is a medicine used in the treatment of allergy (like rhinitis) and transient insomnia.
To respond to this exercise, it is necessary to cross-multiply.
In the antihistamine bottle solution:
25 mg corresponds to 1 ml
11 mg corresponds to: 11/25 = 0.44 ml of the solution.
This 0.44ml is taken from the bottle and put to the syringe.
There are 7 periods in the modern periodic table
The interaction between the two atoms of H in H2 with the lower energy corresponds to a covalent bond between hydrogen's.
When the two atoms of H form a bond, they are overlapping the individual orbitals to form a new one. Every hydrogen has 1 electron which sits in a 1s orbital and then form one molecular orbital. The energy of H2 is lower than individual hydrogens because the electrostatic interaction between them.
