chemistry
1)A solution has a [OH-] of 5.2 x 10-4. What is the [H3O+] in the solution? 2) A 0.25 M solution of a monoprotic acid, HA, has a pH of 2.54. What is Ka for this acid? The dissociation of HA is: HA + H2O <--> H3O+ + A- (Hint: write the expression for pH) 3 A solution has...
Math
Los Angeles is about 385 miles from San Francisco. How far apart would the cities be on a map with a scale of 1 in. = 25 mi? If necessary, round to the nearest hundredth.
science
How would your results have differed if you had over-titrated, i.e. added NaOH beyond the endpoint?
math
i dnt know how to do this can u8 help me
Mte 181
A Grasshopper can jump 19 times his length. If humans were proportional to grasshopper but based on height how far could a 5'9 person jump? Explain.
Mte 180
Is a rhombus regular because the sides are congruent is this statement true or false. Explain reasoning,
Met 181
Joe and Peter have 360 day membership to a tennis club. Joe will use it every other day. Peter will use it every third day. They both use the club on day one. How many days total out of 360 will at least one of them use the club. Please explain.
Mte 181
You have a heptagon with the following interior angles 125, 130, 175, 105, 165, 25. What's the measurement of the 7th angle and why?
Grammar/Morphemes
In the word ecologists, is eco the root morpheme or ology? Are the morphemes eco, log, y, ist, s or ec, ology, ist, s ? This is very confusing for me. Any explanation on how to find the root would be appreciated. It's easy to find roots on some words, but words like ecolog...
chemistry
The answer would B
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