10.Whatdoestheunderlinedword“tangible”probably mean? A.Realistic. B.Creative. C.Challenging. D.Temporary. 11.Whatcanbeinferredfromtheresearchfindings? A.Peoplecangetsmartthroughlearning. B.Oneshouldnotdiscriminateotherraces. C.Peopledon?tenjoyequalrightsforeducation. D.Onecanlivelongerbygettingmoreeduca...
What produces hydronium ions in water? Why is LiHMDS such a strong base relative to hydroxide ion? What does ionization potential measure? Ammonium cation (NH4+) has a pKa of about 9.3. What is true of this compound when the pH is equal to 9.3? a. None of the molecules have a charge...
1. When a chemist speaks of equilibrium, what does he or she mean? Specifically, what is equal in an equilibrium? 2. A mountain river flows into a lake. The level of the lake varies depending on the When observing a solution at equilibrium, it appears to be stationary, as if no chemi...
What does work are native plants that naturally grow in the area.Native plants are important to have around since they provide beneficial pollinators(传粉者)like birds,bees and butterflies with seeds and contribute to a hea...
(A) 6 (B) 8 (C) 10 (D) 14 (E) 16<17>In the integer 3589 the digits are all different and increase from left to right. How many integers between 4000 and 5000 have digits that are all different and that increase from left to 42、 right?数学词汇1数学符号等于:=equal to, the ...
Perfectly pure water is made up of equal amounts of hydrogen ions (H+) and hydroxide ions (OH-). To clarify: that’s H x 2 and O x 1. Combine them together and you get H20. However, water is rarely pure. Dissolved chemicals and minerals can cause these ions to become unbalanced....
The hydrogen ion does not remain a free proton for long, as it is quickly hydrated by a surrounding un-ionized water molecule. The formation of the resulting ion, the hydronium ion, is represented in equation [2]: [2] H2O + H+⇔ H3O+ ...
It flamed orange/yellow, which is what sodium does. So.. unless yet again my logic is flawed here, this cant be a copper compound. another thing that caught my attention is this. using a graphite anode in the reaction yeilded Cl2. This is cuz the Cl2 has nothing to reacti with so ...
For which of the below reactions does the enthalpy of reaction equal the enthalpy of formation of What is enthalpy?Is enthalpy the action of when you burn a compound in order to find the amount of heat or is enthalpy just the actual heat that is produced?
In general chemistry, what do weak acids do? a. accept a proton b. donate a proton Acids: Lewis acids refer to those acids that possess the ability to form a covalent bond with two electrons. Boron trifluoride is one of the examples of such acids. Titration signifies the...