By Sabrina Valle HOUSTON (Reuters) -Exxon Mobil Corp on Monday said its first-quarter results could top a seven-year quarterly record, with operating profits from pumping oil and gas alone of up to $9.3 billion. A snapshot of the largest U.S. oil company’s quarter ended March 31 showed operating profits from oil and gas, its biggest unit, could jump by as much as $2.7 billion over the prior quarter’s $6.6 billion. Exxon does not hedge, or lock in oil sales, and results generally match changes in energy prices. Russia’s invasion of Ukraine pushed up oil by 45% last quarter over the final period…