Does a Protestant go to Hell for a mortal sin?

If a Protestant committed a mortal sin, sincerely repented in his heart, begged Christ’s forgiveness, but being Protestant, did not confess it to a priest, would he go to Hell?

The following links should assist you in better understanding the Catholic Church’s teaching on whether non-Catholics are able to partake of the sacrament of Confession. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.
Recommended Reading:

[LIST]
*]Can a non-Catholic go to Confession?
*]How far do Protestants get by with invincible ignorance?
*]How are Protestants’ sins forgiven without going to confession?
*]**How can a Protestant go to heaven without the sacrament of reconciliaton? **
*]Is Mortal Sin subjective?
[/LIST]

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