Find my iPhone

assuming it is connected to the internet or has a data connection, is turned on and the 'Find My' function is enabled on the device, you should be able to sign into the Apple ID associated with that account through the iCloud website and locate it thhttps://support.apple.com/en-us/HT201472

this guide goes through all the options https://support.apple.com/en-us/HT201472 (Step 1 making use of the feature I just mentioned)