Discover Questions

If 45 grams of magnesium combines completely with 36.5 grams of oxygen, what is the mass percent of magnesium in the compound? Confused
... Thanks!? Assume the random variable X is normally distributed with mean μ=
50 and standard deviation σ=7. Find the
87th percentile.
Thanks!? How do I find out if a charity in the United States is for real? What requirements must be met by a mathematical system in order to be a field? Provide one example.?