Answer:
<h3>THE ANSWER IS LETTER C</h3>
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Answer:
1.196 M NaOH
Explanation:
Molarity = moles/Volume (L)
moles NaOH = mass NaOH/MM NaOH = 12/40.01 = 0.299 moles NaOH
Volume solution = 250 mL = 0.250L
M = 0.299/0.250=1.196 M NaOH
Answer:
All groups have the same number of valence electrons.
Explanation:
groups are the columns.
The first step with any of these problems is putting the mass in grams in terms of moles. How many moles of water are represented by 2.46 g of water? The relationship is the molar mass of water, which is about 18 g/mol. So dimensional analysis shows that 2.46 g water = 2.46 g/18 g = 0.0556 moles of water. That's part a.
The answer is 1.14 atm.
Use the Combined Gas Law on the reference tables to answer this question. You can ignore the temperature portion because it remains constant in this particular case.
25x = (15)(1.90)
25x = 28.5
x = 1.14 atm