Ion concentration and pH of solution
At 25 degrees C, 0.212 g of barium hydroxide is dissolved completely in sufficient water to make 0.25 liter of final solution. What is the hydrogen ion concentration (in mol/liter) in this solution? What is the pH of this solution (to the nearest integer)
determine salt mixture compostition of substance based on limiting reactant.
i have an unknown salt mixture, which was heated and the mass of the precipitate was calculated. the limiting reactant was determined, and based on this data i should be able to determine the salt mixture composition. but i have no idea where to even begin.
both my mum and i have looked everywhere and cannot find what i need? I have to find the alchohol formulas for; Methanol, Ethanol, Propanol, Butanol, Pentanol, Hexanol, Heptanol and Octanol. We have found chemical tables and compounds but not specifically any containing alcohol. Please can you help or tell me where i could look ...continues
Pick the most exciting element in the Nitrogen column...
Pick the most exciting element in the Nitrogen column. Explain your answer.
Give the number of protons and the number of neutrons in the nucleus of the following atoms...
Give the number of protons and the number of neutrons in the nucleus of the following atoms and the number of electrons in their first and quantum shells: 10/5B 14/6C 3/2He 40/19K 16/8O
Briefly summarize the life of Linus Pauling and his contributions to the area of chemical bonding.
I am having a problem forming Ionic compounds. I have been given a list of elements. Na B N Ca Li Ne P Al SO4 Pb(II) NO3 Cu(I) etc.. Rules: Each compond can only contain two different ions. You can have multiples of each element. Formulas must represent the simplest whole nu ...continues
Formalin/Formaldehyde To whom it may concern, I was asked to figure out how to take instantaneous formalin readings in a medical laboratory that conducts biopsies (there are actually quite a few areas in the lab where formalin is utilized) - how to best measure the ceiling levels of formalin. We are currently using wonder ...continues
General Science-Inquiry and Problem Solving
Someone hads you an object that you have never seen before. Explain how you would identify it. Explain how inquiry and problem solving might determine what the object is. Identify the kinds of info you would expect to uncover using inquiry and problem solving. Explain hoiw the work of other scientist will help you.
Chemical bonds between carbon and hydrogen
What kind is the chemical bnd between carbon and hydroged and why ? and their molecules be reactive ? please describe what are reactive molecules too.
