If a gene is located on the human X chromosome it is more likely that a male will express the trait that the gene codes for?

Answer 1

If the trait is recessive, then yes.

Male humans have only a single X chromosome, while females have two. Men need only 1 allele to be effected, while women need 2.

Answer 2

Yes, because males only have one X chromosome (inherited from their mother), any gene on that X chromosome will be expressed in males. In females, both X chromosomes are present and one may be silenced through a process called X inactivation, leading to more variability in gene expression.