Water=h20
=2.0*10^22 molecules
Answer:
E
Explanation:
The question talks of a PHYSICAL model of the sun. An equation, chart, computer program and paragraph are most definitely not physical models.
The answer to your question is D. understand patterns if I'm not mistaking
Answer:
A. 0.02625mole
B. 6.02x10^23 ions
Explanation:
A. The following were obtained from the question:
Volume = 150mL = 150/1000 = 0.15L
Molarity = 0.175M
Mole =?
Molarity = mole / Volume
Mole = Molarity x Volume
Mole = 0.175 x 0.15
Mole = 0.02625mole
B. Avogadro's hypothesis suggest that 1mole of any substance contains 6.02x10^23 molecules, atoms or ions. This implies that 1mole HCl contains 6.02x10^23 molecules.
The dissociation of HCl is given below:
HCl <==> H+ + Cl-
From the equation,
1 mole of HCl contains 1 mole of Cl-
ion and Avogadro's hypothesis suggests that 1mole of any substance contains 6.02x10^23 molecules, atoms or ions. Therefore 1mole of Cl- contains 6.02x10^23 ions.
This means that there are 6.02x10^23 ions of Cl in HCl
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