问一题关于化学mole的问题1.(a) If 1mole of ozone(O3) contains x atoms,how many atoms will 1mole of oxygen(O2) cotain?(b) If 8g of nitrogen(N2) cotain y molecules,how many molecules are present in 8g of sulphur dioxide?答题者请附上答案和解释 答案 1 如果1molO3 中含有个氧原子,则...
How many oxygen atoms are there in a molecule of ozone? How many atoms are required to form a molecule? How many atoms does a molecule of CO2 have? What is the number of moles He in 8.90x1015 atoms of He. How many oxygen atoms are there in one formula unit of Ca3(PO4)2?
Explain how the Lewis structure of ozone is important. What can chemists can do to prevent ozone depletion in the atmosphere?Ozone Layer:One cannot imagine the protection of human beings from harmful solar radiations in the absence of ozone laye...
The fact that decayed organic material is critical to the life of soil helps to explain why many environmentalists have long been concerned about the destruction of tropical rain forests. For example, in Brazil, vast portions of the Amazon rain forest have been clear-cut, subj...
Non-ionizing radiation is relatively low-energy radiation that doesn't have enough energy to ionize atoms or molecules. It's located at the low end of the electromagnetic spectrum. Non-ionizing radiation sources include power lines, microwaves, radio waves, infrared radiation, visible light and las...
And bottled water — even purified water — does not have to be completely free of contaminants. It simply has to have below the FDA-allowed and/or state-allowed level of certain contaminants. Taste So what we're left with is taste. Many bottled water drinkers report taste as the primary...
They have a more microscopic view of the world that includes cellular processes such as respiration and photosynthesis, and they use many scientific vocabulary words. Rather than identifying actors and enablers, they are much better at identifying key subsystems (such as cells, molecules, and atoms...
it is written in a comprehensible manner and dispenses with detailed explanations to complex processes and many background references. This handbook does not claim to be complete and concentrates only on the areas that are of practical relevance for most activated carbon applications. Activated carbon...
Older refrigerant formulas containing chlorine atoms that had the potential to damage the ozone layer have slowly been phased out in favor of more environmentally friendly coolants [source: EPA]. The Parts of an Air Conditioner HowStuffWorks Let's get some housekeeping topics out of the way ...
But over the years, as warheads have decreased in size, other options have become available. Many countries have stockpiled several ballistic and cruise missiles armed with nuclear devices. Most ballistic missiles are launched from land-based silos or submarines. They exit the Earth's atmosphere, ...