What is the h + concentration for an aqueous solution with poh = 4.44 at 25 ∘c?

What is the Lewis acid in the following reaction? NH3 + BI3 → I3BNH3

The atomic symbol 206 82 Pb represents lead-206 (Pb-206), an isotope that has 82 protons and 124 neutrons. Which atomic symbol could represent an isotope that undergoes radioactive decay to produce Pb-206? A. 238 92 U B. 222 87 Pb C. 178 72 Hf D.

Mac Arthur Forrest process is used for the extraction of?

Calculate the mass of nitrogen dissolved at room temperature in a 80.0 l home aquarium. assume a total pressure of 1.0 atm and the mole fraction for nitrogen of 0.78. (the kh value for nitrogen in water is 6.1 x 10-4 m/atm.)

HA and HB are two strong monobasic acids. 25.0cm3 of 6.0 moldm-3 HA is mixed with 45.0 cm of 3.0 moldm-HB. What is the H * (aq) concentration, in moldm-3, in the resulting solution? A 1.9. C 4.1 B 2.1. D 4.5

The size of a minerals crystals depends on what?

The density of gold is 19.3 g/cm3. What is the mass of 15cm3 of gold?

Which state of matter has no definite size or shape

Select the correct hybridization for the central atom based on the electron geometry cocl2 (carbon is the central atom).

What will most likely happen when these molecules get closer? The molecules will repel each other because of a dipole-dipole interaction. The molecules will attract each other because of a dipole-dipole interaction.