30.0g of N_(2)CSH_(2)Cl is mixed with a 1.00L.solution of 0.100MN_(2)CSH. If 0.200 mol of NaOH is added, what will be the final pH? N_(2)CSHKb=6.1^ast 10^-6
What variable determines which "R" value you use in your calculation? moles (n) pressure (P) volume (V) temperature (T)
If E^circ (red) of a given half-cell is more negative than E^circ (red) for a standard hydrogen electrode, the half-cell will: A & tend to oxidize. B & tend to reduce. C & be at equilibrium. D & Not enough information is given.
Pb_(3)PO_(4) has a molar solublity of 3.0^ast 10^-23 What is the molar solubility in a solution of 0.0230MNa_(3)PO_(4) Answer
A container has 9.0 ml of liquid X with a density of 1200kg/m^3 How much liquid Y with a density of 1400kg/m^3 should be added to the flask so that the density of the liquid mixture is 1280kg/m^3 3.5 ml 6.0 ml 6.4 ml 8.7 ml
Question 26 (2 points) Which of the following will cause the rate of a reaction to increase? Decreasing reactant concentration Removing a catalyst Decreasing the temperature None of the above will increase reaction rate
Find the pH of a 0.0153 M solution of hypochlorous acid. (The value of K_(a) for hypochlorous acid is 2.9times 10^-8 Express your answer using two decimal places. pH=square
What does SDS stand for? Safety Data Sheets Standard Systems Solutions Saturated Diluted System Super Dynamic Suds
What is the name for BaCl_(2) A. Barium chlorine B. Monobarium dichloride C. Barium dichloride D. Barium chloride
What is the chemical formula for copper(II)phosphate? Cu_(2)PO_(4) CuPO_(4) Cu(PO_(4))_(3) Cu_(3)(PO_(4))_(2)
Given the following reactions and corresponding $\Delta H$ values, find the $\Delta H$ (to the nearest whole \#) for the reaction: $H_{2}SO_{4}(l)\rightarrow SO_{3}(g)+H_{2}O(g)$ $H_{2}S(g)+2O_{2}(g)\rightarrow H_{2}SO_{4}(l)$ $\Delta H=-235kJ$ $H_{2}S(g)+2O_{2}(g)\rightarrow SO_{3}(g)+H_{2}O(l)$ $\Delta H=-207kJ$ $H_{2}O(l)\rightarrow H_{2}O(g)$ $\Delta H=44kJ$ $\square $
Convert $4.68\times 10^{25}$ atoms $PBr_{3}$ to mol
Which of the following best describes a mixture? a material that is made up of many molecules a substance that can be changed into another substance a material that contains two or more substances a substance that has been broken down into Its smallest parts
What is used to of a hope of sixes in a a compound heard on the chermal reme? the periodic table prefixes chemical symbols the IUP AC
40. Using the hyphen form of symbol writing write the name of this atom. ${}_{9}^{19}F^{-1}$
Which of the following will not increase 1 point the rate of a chemical reaction? increasing surface area stirring decreasing the temperature increasing the concentration A __ is a substance that increases the rate of a reaction without being consumed. __ 1 point A(n) __ slows down the rate of a reaction. __ is a substance that 1 point
Use molecular orbital theory to determine the bond order in $H_{2}$ o 2 1 3
What partie should be used for the caygin akan when maning the characal formuls $SO_{2}?$ $\square $ disappointed mono- pent.
What happens to the pH of a buffer solution if it is diluted by adding more water? A) pH increases B) pH decreases C) pH remains the same D) pH becomes 7 E) It depends on the starting volume of the buffer
What is the chemical formula for lead (II)sulfate? $Pb_{3}(SO_{4})_{2}$ $PbSO_{4}$ $Pb_{3}(SO_{3})_{2}$ $PbSO_{3}$
