PLEASE HELP WILL GIVE BRAINLIEST

Which coefficients balance the following equation?

___FeCl3 + ___NaOH arrow ___Fe(OH)3 + ___NaCl

A. 1, 3, 1, 3
B. 3, 1, 3, 1
C. 2, 2, 2, 2
D. 1, 2, 1, 2

How many molecules are in 6.0 moles of methane

Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)

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.