Can someone help me in solving the first question please. And second question I just included just to see if my answer is correct. My dyslexia plays with my mind sometimes =/
The pKb of ammonia is 4.74. What is the pKa?
A 
9.26 

B 
4.74 

C 
0.676 

D 
14 

E 
0.211 
If I dissolve KOH in solution to a concentration of 3.4 x 10^{4}, what is [OH] in solution?"
A. 
3.4 x 10^{4} 

B 
2.94 x 10^{11} 

C 
Can t be determined without the pKa 

D 
2.94 x 10^{10} 

E 
3.47 
Can someone help me in solving the first question please. And second question I just included...
HELP!! I keep getting these two questions wrong. THANK YOU to whoever can help me with this. If I dissolve KOH in solution to a concentration of 3.4 x 104, what is [OH] in solution?" 3.4 x 104 2.94 x 1011 Can t be determined without the pKa 2.94 x 1010 3.47 If [H+] in aqueous solution is 6.50 x 106, what is [OH]?" 1.67 x 104 1.67 x 109 4.22 1.67 x 1010 6.50 x 106
Can someone please help EXPLAIN this to me? I don't just want answers, I need EXPLANATIONS! I will mark it thumbs down if it is not explained to me and just given the answer. Thanks! Even if you could answer a few of them. Please, you'd be saving my grade. Just explain it. Equivalnets of hydroxide 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 pH a) What is the one letter code for...
I need help with solving this step by step, please help me solve these step by step and with explanation, please do It on paper and not typed up because it is really confusing when typed up format and your Solve the following problems. Your solutions should be in the final answers should have the correct units and number of significant figures. 58. proper What mass of Mg(OH), will dissolve in 1.0 L of 0.050 mol/L solution of MgSO4a? (9...
Can someone please help me in solving question in attached image. Thanks Suppose that an array A of n 1 numbers is given. We want to create a n x n matrix B such that, for 0 i<j<n, Bli.j] AIk] = Ali]Ali+1] for n ij 0, B[i.j] 0 +Aljl ki I need to write a program where it accepts A as array and return B as matrix defined above, for O(n 2) algorithm
I need help with the solving this problem! Can someone please give a detailed explanation on how to solve it? 8:08 Search MasteringChemistry <Chapter 16 Problem 16.81 < 9 of 12 > Review Constants Periodic Table Part A A solution of sodium acetate (NaCH3COO) has a pH of 9.48. The aciddissociation constant for acetic acid is 1.8 x 10 What is the molarity of the solution? Express your answer to two significant figures and include the appropriate units. Molarity =...
CAN SOMEONE HELP ME AND WITH SOLVING AND EXPLAINING IT TO ME PLEASE? Short Answer Question 2  The Display [10 marks] Rather than showing numbers, we want to design our 7segment display for letters. Design a circuit to decode our binary representation of each pressed key into the closest approximation of the ASCII letter (5 = A, 6 = B, 7 = C, 8 = D). Each segment of the display (ag) is an LED that turns on with...
Can someone help me with these 2, I am having trouble solving them. Question 4 Using the tables for water determine the specified property data at the indicated state. For H2O at p = 0.7 MPa and v = 0.62 m3/kg, find h in kJ/kg. Note: Round up the answer to 2 decimal places.  Question 5 Using the tables for water determine the specified property data at the indicated state. For H2O at p = 0.7 MPa and v...
Can someone please help me with my lab, for part 1 I need to find the ksp of Ca(OH)2 and the molar solubility and part 2 just the molar solubility. Can someone please show me how to do these calculations? PLEASE Part 1: Standard HCl conc. 0.0480 M Buret reading initial 0.00 mL Buret reading final 12.20 mL Volume of the filtrate of Ca(OH)2 solution 25.00 mL Part 2 Standard HCl conc. ...
i am stuck can someone help me answer these please 0.2.9 Question Help 0 Find the indicated 10 score. The graph to the right depicts 10 scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. 0.99 0 The indicated IQ score, x, is (Round to one decimal place as needed.) Question Help y...
Can someone please help me understand question 2? I understand the first one, but for some reason I keep getting the second one wrong In the class lecture notes, the result of the firstorder perturbation calculation for the energy of lithium was given as E"  2J12+ILLK2. This energy is added to the EC value obtained by treating each electron as if it were in an independent hydrogenlike orbital in order to estimate the total energy of the lithium atom....