Answer:
0.098 moles
Explanation:
Let y represent the number of moles present
1 mole of Ba(OH)₂ contains 2 moles of OH- ions.
Hence, 0.049 moles of Ba(OH)2 contains y moles of OH- ions.
To get the y moles, we then do cross multiplication
1 mole * y mole = 2 moles * 0.049 mole
y mole = 2 * 0.049 / 1
y mole = 0.098 moles of OH- ions.
1 mole of OH- can neutralize 1 mole of H+
Therefore, 0.098 moles of HNO₃ are present.
B. The surface of a silver cup turns black when it is exposed to air.
Determining on the temperature, ice could melt, water could freeze or evaporate. Just an example.
The amplitude of a wave is most directly related to crest length.
Amplitude means the height of a crest or a trough.
Answer:
C.If one light in the string burns out in a parallel circuit, the rest of the lights will continue to shine.
