Miners discover a new vein of metal in the mine they are excavating. They send a sample to your lab so you can
determine what type of metal it is. You heat up a 2 kg block of the unknown metal from room temperature of 298 K
until it melts at 1768 K. You measure that it takes 1.24 x 10^6 J of energy to melt the block. Use the specific heats of
various metals shown below to determine what metal the miners have discovered.
Aluminum: 904 J kg-1 K-1
Nickel: 445 J kg-1 K-1
Copper: 384 J kg-1 K-1
Cobalt: 421 J kg-1 K-1
Titanium: 520 J kg-1 K-1
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A. Nickel
B. Copper
C. Cobalt
D. Aluminum

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

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.

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso