Burnx

You can put the parts into PCPartPicker.com to check compatibility, there's a very useful search feature.
 
Something to note, it is a bad combination of parts. An H series motherboard cannot overclock, and the 9600K is designed explicitly to overclock.

Since you have the RTX2060 and the 278Q is on the Official 12 list of Freesync compatible monitors, get the 278Q monitor as you will be guaranteed it to work with G-sync enabled. 

PCPartPicker part list / Price breakdown by merchant Type Item Price CPU AMD - Ryzen 5 2600 3.4 GHz 6-Core Processor $164.99 @ Amazon Motherboard ASRock - B450 Pro4 ATX AM4 Motherboard $75.90 @ OutletPC Memory G.Skill - Ripjaws V Series 16 GB (2 x 8 GB) DDR4-3000 Memory $104.99 @ Newegg Business Storage Crucial - MX500 500 GB 2.5" Solid State Drive $67.89 @ OutletPC Video Card EVGA - GeForce RTX 2060 6 GB XC ULTRA GAMING Video Card $379.99 @ Amazon Case Cooler Master - MasterBox MB511 RGB ATX Mid Tower Case $67.98 @ Newegg Business Power Supply BitFenix - Formula Gold 550 W 80+ Gold Certified ATX Power Supply $49.99 @ Newegg Business   Prices include shipping, taxes, rebates, and discounts     Total (before mail-in rebates) $931.73   Mail-in rebates -$20.00   Total $911.73   Generated by PCPartPicker 2019-01-18 11:08 EST-0500   here you go