1. 50 g of a weak acid (molar mass 176) is dissolved in 50. 0 ml of water, and the resultant solution is titrated with 0. 300 m naoh. When 12. 5 ml of 0. 300 m naoh is added, the ph of the resultant solution is 4. 0. Calculate ka for this acid

That’s really nice!

It would have to be c or d

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

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is this a serious question? let me know!

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