An unknown substance was left in a chemistry lab and your teacher has tasked you and your lab group to help in identifying the substance. The substance was tested by placing a piece of aluminum metal in each substance. Identify the best experiment below that would help in identifying the substance.

If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.

Give one example of a pure (exact) number and of an estimated (measured) number.