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Is reaction of potassium iodide and water exothermic or endothermic?
Its endothermic... In my experiment, it went from 26 to 25 degrees celsius... Its endothermic... In my experiment, it went from 26 to 25 degrees celsius... This is wrong it is exothermic. Potassium chloride is snow salt. it is used because not only does it react with the snow to create hydrochloric acide and potassium hydroxide (both with much lower freezing points) but, the EXOTHERMIC reaction also helps melt the snow No, it is endothermic. The only reason we add salt to snow is to lower the melting point. If you're curious, dissolve as much KCl in a beaker as you can as quickly as you can. The water temperature will drop dramatically.
Where does potassium come from?
potassium comes from seawater . but it is found in other foods. such as avocado, banana nuts, orange juice, peanut butter, etc. the person who discovered potassium was Sir Humphrey Davy in 1807. the word potassium comes originally from potash. the atom of a potassium has four energy levels. in the first level it has 2 electrons, in the second level it has 8 electrons, in the third level it also has 8 electrons, finally in the fourth level it has only one electron. i can't say that learning things about an atom is easy but if pay close attention it could be easy to remember. first things first the atomic number which is the number at the top of the periodic letter of any atom is equal to the number of protons which also equals the number of electrons. now the number at the bottom of the letter is the atomic mass unit. this is the number that tells you the number of nuetrons. in order to get the number of nuetrons you need to take the atomic mass unit and subtract it with the number of protons. then you get your number of nuetrons. congrgulations, i hope you get an A on your project or whatever your doing
How many grams of potassium carbonate are needed to make 200mL of a 2.5M solution?
You would basically start off by multipying the 2.5X0.2 because you must change the mL to L and by doing so you will get : 0.5 once you have the 0.5 you then must find the molar mass # of potassium carbonate and to do so you must look at a table of elements. The molar mass number of K2CO3 is: 39(2)+12+16(3) = 138 Now that you have the molar mass # which is 138 you must multiply it by 0.5 from before so lastly you: 138X0.5= 69g And that's how you do it... :)
What happens to a fluid when the temperature increases?
When the temperature of a fluid increases, its molecules gain kinetic energy and move faster, causing the fluid to expand and become less dense. This results in a decrease in viscosity, making the fluid flow more easily. Additionally, the thermal expansion of the fluid may cause it to rise or circulate because of the changes in density.
Why is electrical energy converted into thermal energy?
The most common way of doing that is to use heat to boil water, and then to use the steam off the boiling water to turn turbines. The turbines are then used to turn generators, and they produce electricity. (The heat becomes mechanical energy to generate the electricial energy.) Heat is infared (IR) electromagnetic radiation. A simple and historical concept for conversion would be to use steam turbines. Although some research has been done into collecting IR energy from the Sun (and other sources) using nanotechnology. Thermoelectric generators turn thermal heat directly into electrical energy by heating different types of wire conductors. One type is called a Seebeck generator for its discoverer, Thomas Seebeck. The Seebeck effect is also widely used in voltage measuring devices. Lower-power thermionic generators also produce electrical energy directly from heat energy by ionic means. Some use caesium metal vapor. * Some forms of solar energy systems collect radiant heat from the Sun, heating water in the panels (but most use photovoltaic conversion, turning light energy into electricity).
What happen when potassium chlorate is heated?
It would decompose and turn molten. But be careful when you are doing it. Molten potassium chlorate is very nasty stuff. Spill it onto your skin, and it would leave a terrible burn. Potassium chlorate decomposes into oxygen, and when something that could burn, such as a gummy bear, is added to it, it rapidly combusts, driving the decomposition forward. If you spill molten potassium chlorate, you could think of the table, floor, your clothes, your skin, as another gummy bear. So be cautious when working with it.
Can the dead guide you?
No, the dead are incapable of doing anything unrelated to decomposition.
What element can be doing in the same period as the element potassium?
sodium and lithium are both group 1 elements (like potassium)
What did you learn by doing the thermal energy lab?
Nothing really.
How is potassium related to a neuron?
bad place kid for doing poster
What are descomposer?
Are organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition.
If potassium and sodium are so reactive how do you maintain levels of sodium and potassium in your cells without doing damage to your own cells?
We do not have pure sodium or potassium in our bodies; that would kill us! We really have sodium chloride (NaCl) which is table salt, and most likely potassium oxide (K2O) or some other compound with potassium in it.
What is thermal warming?
It is a tautology - while a thermal blanket may keep you warm, it is not doing so by thermal warming it is doing so by thermal insulation. Thermal means "relating to heat". Warming means "increased heat"
What is a breaking down reaction a word with 13 letters in it?
are you doing a crossword because so am I! The answer is DECOMPOSITION. good luck!!
What does decomposer mean?
De composers are organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition.
What means decomposer?
De composers are organisms that break down dead or decaying organisms, and in doing so carry out the natural process of decomposition.
What is heat expressed in?
joules Calories, btu's (British thermal units), and degrees. Depends what you're doing.
