Everyone is very familiar with water. We observe it as rain and snow and can see it in the oceans, lakes, rivers, and streams. Although the water in our bodies is not as apparent, recognize that most of our weight is made up of water. In fact, the normal adult is made up of approximately 60% water. Thus, water is essential for life.
Water is made up of hydrogen ions (H+) linked to hydroxyl ions (OH-) to form H2O. The molecular formula for water is H2O. From this formula and the atomic weights for hydrogen and oxygen you can calculate that the molecular weight of water is approximately 18 grams.
Если нужен перевод то я могу ещё Скажите, в каком предложении мы не можем использовать. 1) Миссис Браун умела хорошо танцевать, когда была моложе. 2) Мы попытались открыть дверь, и мы сможем это сделать наконец. 3) Они не смогли построить новый гараж. 4) Она смогла приготовить обед через десять минут, и мы не проголодались. 5) Мы не знали адрес, но мы смогли найти отель. 6) Там было темно, но Энн смогла сфотографировать дворец. 7) Тета лето было очень холодным, но мы смогли выращивать помидоры в нашем саду. 8) Они не смогли решить, куда идти. Вот перевод (надеюсь что хоть чем то
Everyone is very familiar with water. We observe it as rain and snow and can see it in the oceans, lakes, rivers, and streams. Although the water in our bodies is not as apparent, recognize that most of our weight is made up of water. In fact, the normal adult is made up of approximately 60% water. Thus, water is essential for life.
Water is made up of hydrogen ions (H+) linked to hydroxyl ions (OH-) to form H2O. The molecular formula for water is H2O. From this formula and the atomic weights for hydrogen and oxygen you can calculate that the molecular weight of water is approximately 18 grams.