Diborane (B2H6) is widely used in the synrhesis of organic compounds. Diborane itself is made by the reaction 2NaBH4 +I2 -> B2H6 + 2NaI +H2. if 6,3 g of NaBH4 are rected with excess I2 how many grams of diborane could theretically e isolated? if 1.9 g of diborane is actually produced what is the percent yield of the reaction

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

I’m an electrically neutral atomic any element, there are equal numbers of