What is the relationship between air pressure weather fronts and air masses? When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating […]
Why do chromosomes split in half?
Why do chromosomes split in half? Mitosis causes the number of chromosomes to double to 92, and then split in half back to 46. This process repeats constantly in the cells as the baby grows. Mitosis continues throughout your lifetime. It replaces skin cells, blood cells, and other types of cells that are damaged or […]
How are errors corrected?
How are errors corrected? Error-correcting code (ECC) or forward error correction (FEC) is a method that involves adding parity data bits to the message. These parity bits will be read by the receiver to determine whether an error happened during transmission or storage. In this case, the receiver checks and corrects errors when they occur. […]
Who is Ilya from Letters from Rifka?
Who is Ilya from Letters from Rifka? Ilya from Letters from Rifka is the poor boy that the main character meets at the holding facility on Ellis Island. He has had a rough life and everyone treats him as though he were a Peasant. Did Rifka make it to America? She helps him understand that […]
How many hydrogen molecules are in a molecule of water?
How many hydrogen molecules are in a molecule of water? two hydrogen A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. How many H is in water? two hydrogen atoms Liquid water. The water molecule is composed of two hydrogen atoms, each linked by a single chemical bond to […]
What are the forces that hold an atom together?
What are the forces that hold an atom together? Chemical bonds are forces that hold atoms together to make compounds or molecules. Chemical bonds include covalent, polar covalent, and ionic bonds. Atoms with relatively similar electronegativities share electrons between them and are connected by covalent bonds. What are the forces created by particles in the […]
How were the elements in the periodic table arranged?
How were the elements in the periodic table arranged? In the modern periodic table, the elements are listed in order of increasing atomic number. In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column (group). How did Mendeleev assemble the elements in […]
What is the best way to clean a wooden deck?
What is the best way to clean a wooden deck? They include: Warm water can be used on its own to wash a wood or composite deck. Liquid dish soap (ammonia-free) is safe for use on cleaning your deck when mixed with a little warm water. Oxygen bleach or powdered oxygen laundry cleaner is safe […]
Why did Hatshepsut build her mortuary temple?
Why did Hatshepsut build her mortuary temple? The Temple was built to commemorate the achievements of the great Queen Hatshepsut (18th Dynasty), and as a funerary Temple for her, as well as a sanctuary of the god, Amon Ra. In the 7th century AD, it was named after a Coptic monastery in the area, known […]
How do you remove solids from wastewater?
How do you remove solids from wastewater? Sedimentation processes are very effective in removing suspended solids in industrial wastewater. Clarifiers, either rectangular or circular, are most commonly used in the application of sedimentation in wastewater treatment facilities. What materials can be removed from wastewater? Primary Treatment This can include rags, paper, wood, food particles, egg […]