boron hydrides were once evaluated for possible use as rocket fuels. Complete and balance the following equation for the combustion of diborane. B2H6(g)+O2(g)-B(OH)3(l)

What is the mass percent of water in Zn(NO3)2·6 H2O?

Calcium carbide, CaC2, reacts with water to form acetylene, C2H2, and calcium hydroxide. Write a balanced equation for this reaction. (You do not need to write the states.) If you were designing the procedure for producing acetylene from calcium carbide and water, which of the reactants would you have as the limiting reactant? Why? Assuming 100% yield from the limiting reactant, what are the approximate amounts of CaC2 and water that you would combine to form 127 g of C2H2?

Answer the questions in the table below about the shape of the borane (BH3) molecule. How many electron groups are around the central boron atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central boron atom? (You may need to use the scrollbar to see all the choices.) (choose one) X G <

Write the balanced reaction for the synthesis of Al2O3 from its elements?

Part A) Draw the Lewis dot structure for SiO44−. Use square brackets to denote the overall charge.   Part B) Draw the Lewis dot structures for two connected SiO4 tetrahedra. (Hint: Look at it as O3Si−O−SiO3^6−.)

Balance the equation for the production of acetylene C2H2  from the reaction of calcium carbide with water. If the acetylene is burned to form water and carbon dioxide, how many kilojoules of energy are produced from the complete reaction of 18 g of calcium carbide?

[References] Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following process: 2NH3 (g) + 30, (g) + 2CH, (g) → 2HCN(g) + 6H, 0(g) Hydrogen cyanide is used to prepare sodium cyanide, which is used in part to obtain gold from gold-containing rock. If a reaction vessel contains 6.10 g NH3, 13.0 g 02, and 5.83 g CH4, what is the maximum mass in grams of hydrogen cyanide that could be made, assuming the reaction goes to completion as written? Mass g HCN Submit Answer Try Another Version 3 item attempts remaining (Previous Next Save and Exit

Acetylene is the substance burned in oxy-acetylene torches.Write a balanced equation for the complete oxidation reaction that occurs when acetylene (C2H2) burns in air.Use the smallest possible integer coefficients.

18 19 20 21 22 23 24 Answer the questions in the table below about the shape of the methyl (CH3) anion. How many electron groups are around the central carbon atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. 0 What phrase best describes the arrangement of these electron groups around the central carbon atom? (You may need to use the scrollbar to see all the choices.) ✓ (choose one) linear bent T-shaped trigonal planar trigonal pyramidal square planar square pyramidal tetrahedral sawhorse trigonal bipyramidal octahedral Continue Two Column N....pages Kindergarten O....docx Grey Black and B....pdf 14 431 10 25 nola Mir Grey Black and B....pdf 26 Ⓒ2022 McGraw Hill LLC. All