mmune with the bear spirit on an astral plane and explain the procedure for obtaining single cry

plz explain part b :)

An oxide of niobium has a cubic unit cell in which there are oxide ions at the middle of each edge and niobium atoms at the center of each face. What is the empirical formula of this oxide?

Solve it asap with reason

2. Calculate the Packing Factor of the Sodium Chloride structure to know the degree of occupancy of the ions that make it up.

One method to synthesize ionic solids is by the heating of two reactants at high temperatures. Consider the reaction of FeO with TiO2 to form FeTiO3. Determine the amount of each of the two reactants to prepare 2.200 g FeTiO3, assuming the reaction goes to completion. a)Write a balanced chemical reaction. Express your answer as a chemical equation including phases. b)Determine the moles of FeTiO3.Express your answer in moles to four significant figures. c)Determine moles of FeO required.Express your answer in moles to four significant figures. d)Determine the mass of FeO required.Express your answer in grams to four significant figures. e)Determine moles of TiO2 required. Express your answer in moles to four significant figures. f)Determine the mass of TiO2 required. Express your answer in grams to four significant figures.

Mercury has a density of 13.69 g/cm3 in the liquid state and 14.193 x 103 kg/m3 in the solid state, both measured at the melting point of 234.33 K at 1 bar. If the heat of fusion of mercury is 9.7876 kJ/kg. What is the melting point of mercury at 7 bar?

Copper normally melts at 1085 °C with an enthalpy of melting of 13.05 kj/mole. The constant molar volumes of liquid and solid copper are 8×10^-6 and 7.6×10^-6 m^3, respectively. a) Estimate the change in melting point if the pressure on copper is increased 10 atm. (Use Clapeyron equation) b) Draw G vs. P graphs for solid and liquid copper (show them on the same graph) at a given constant temperature. Indicate the slopes.

Which polymer would you expect to have a higher viscosity at room temperature: isotactic-polypropylene (i-PP) or atactic-polypropylene (a-PP)? Explain and support your answer in your own words.

Fe(s)+S8(s)→Fe2S3(s)Fe(s)+S8(s)→Fe2S3(s) Express your answer as a chemical equation. Identify all of the phases in your answer.