PLEASE HELP WILL MARK BRAILIEST!!! A chemist reacts H2 with excess N2. The reaction yields 50 grams of NH3. However, you calculate you should have recovered 64 grams of NH3. What is the percent yield of the reaction? (Give two significant figures)

Percent Yield = % (Give two significant figures. For example, 2.2 has two significant figures)

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Answer asap need by wednesday morning calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 best answer will be brainliest