No atoms are destroyed or created. The bottom line is: Matter cycles through the universe in many different forms. In any physical or chemical change, matter doesn't appear or disappear. Atoms created in the stars (a very, very long time ago) make up every living and nonliving thing on ...
Nobody else thinks that they should get it resolved. There is no reason for him not to get resolved. I agree with you that he can get the job. That's really what I mean. I really hope that he can get the job. Nobody else should get that job. In my opening. It's right that ...
How many atoms of hydrogen are there in 18 grams of water? If the heat of vaporization of water is 539.5 calories per gram, how many calories of heat are needed to vaporize 2.46 kilograms of water? What is the average evaporation rate of water?
This problem shows how the lack of just one enzyme in the human body can lead to problems. A person who is lactose intolerant can swallow a drop of lactase prior to drinking milk and the problem is solved. Many enzyme deficiencies are not nearly so easy to fix. Inside a bacterium there...
The nurse selects the nursing diagnosis of Risk for Impaired Skin Integrity related to immobility, dry skin, and surgical incision. Which of the following represents a properly stated outcome/goal? Th...
That is, the individual gas atoms include equal numbers of protons (positively charged particles in the atom's nucleus) and electrons. The negatively charged electrons perfectly balance the positively charged protons, so the atom has a net charge of zero. If you introduce many free electrons ...
While there are strong covalent bonds between carbon atoms in each layer, there are only weak forces between layers. This allows layers of carbon to slide over each other in graphite. ... In this rigid network atoms cannot move. This explains why diamonds are so hard and have such ahigh ...
In 1905, Albert Einstein developed the theory of special relativity. He also proved that atoms exist and figured out that light behaves as both a particle and a wave. To top it all off, he developed his famous equation E = mc², which describes the relationship between matter and ene...
Read more in How X-rays Work. Gamma rays: Gamma rays have the most energy and shortest wavelength of the entire spectrum. Nuclear explosions and radioactive atoms generate these rays. Gamma rays can kill living cells, and medical professionals sometimes use them to destroy cancerous cells. In...
In others, it's incredibly easy to get and then squandered. What substance is more necessary to our existence than any other? Water. At its most basic, water is a molecule with one oxygen atom and two hydrogen atoms, bonded together by shared electrons. It is a V-shaped polar molecule,...