Dùng thuyết lai hóa, hãy giải thích sự hình thành liên kết trong phân tử NF3. Cho biết góc liên kết ^FNF là 102o và 7N, 9F.

What is the molar mass of a gas that has density of 2.054 g/l

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.