May 30 (Reuters) - Bank Of Nova Scotia BNS.TO
* Scotiabank ceo says strong balance sheet gives bank flexibility to make acquisitions
* Scotiabank cro says has stress tested residential mortgage book against 50 percent decline in prices, losses very manageable
* Scotiabank international head says credit demand strong from customers in mexico
* Scotiabank ceo says expects opportunities to make acquisitions over the next year
* Scotiabank ceo says suspects more acquisition opportunities in international business in next year Further company coverage: BNS.TO