В сосуде объемом 10 л исходные количества вещества оксида углерода (II) и кислорода равны по 4 моль. Через 4 с образовался оксид углерода (IV), количества веществ которого составило 0,8 моль. Определите среднюю скорость реакции по кислороду и количество вещества оставшихся в сосуде газов СО и О2.

It was a clear day as I stepped on the board for the first time. I (1) was going down the hill and could feel the wind in my face, but I (2) lost control and (3) slid into the snow. What (4) had I done wrong?
My friend (5) helpedme down the first hill and (6) explained how to turn the board. Next moment I (7) was going down the hill but kept falling with every passing minute. Then I (8) realised I (9)was not turning the board properly. I went down a little more, trying it that way.
I finally (10) made it. Now I needed to get on the lift. It (11) was coming so fast that I thought it (12) would knock me over. But then something very strange (13) happened – I found it easy to get on the lift. I felt as if I (14) had done it in the past life.
The next day I tried again and my turns (15) were better.

Tourism in Wales - one of the sectors of the regional economy. Wales is a new tourist destination in 2002, it was visited by more than 8 million people. In 2005, thanks to the tourism economy of Wales received nearly 100,000 jobs in the service sector, it is 8% of the total number of jobs in Wales. The most popular activities for tourists in Wales are shopping, hiking and visiting historical sites, museums and galleries. In 2006, Wales was visited by over 1.1 million foreign tourists, mostly from Ireland, the USA and Germany.