A10.00 g sample of a soluble barium salt is treated with
an excess of sodium sulfate to precipitate 11.21 g baso4
(m = 233.4). which barium salt is it?
(a) bacl2 (m = 208.2)
(b) ba(o2ch)2 (m = 227.3)
(c) ba(no3)2 (m = 261.3)
(d) babr2 (m = 297.1)

1) this is the structure in the cell nucleus that houses a cell's genetic information

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?