Ans 1 : a) HCN , cyanic acid
The names of the chemical compounds depend on identity of elements present in them , their number of atoms and their oxidation state.
HCN is hydrogen cyanide which is known as prussic acid. Cyanic acid is HOCN . So here option a is incorrectly named.
Question Completion Status: QUESTION 1 All of the following are in aqueous solution. Which is incorrectly...
if you need a value of Ka, you should use this table: An aqueous solution contains 0.390 M hydrofluoric acid. How many mL of 0.200 M sodium hydroxide would have to be added to 250 mL of this solution in order to prepare a buffer with a pH of 3.050? mL Ferric ion Fe(H20)63+ 4.0x10-3 Formic acid HCOOH 1.8x10-4 Hydrocyanic acid HCN 4.0x10-10 Hydrofluoric acid HF 7.2x10-4 2.4x10-12 Hydrogen peroxide H202 Hydrosulfuric acid H2S 1.0x10-7 1.0x10-19 Hypochlorous acid HCIO 3.5x10-8...
d. NH4(C5Ohm e. (NH4)2CO3 47. Which of the following are incorrectly paired a) Sr, alkaline earth metal b) Ta, transition metal c) F, halogen d) As, halogen e) , transition metal 48. Which of the following are incorrectly paired? a) Phosphorus, Pr b) Palladium, Pd c) Platinum, Pt d) Lead, Pb e) Potassium, K 49. Which of the following names is incorrect? a) cobalt(II) chloride b) magnesium oxide c) aluminum(III) oxide d) diphosphorus pentoxide e) All of the above names...
Question Completion Status: QUESTION 16 Which one of the following pairs cannot be mixed together to form a buffer solution? NH3, NH4Cl NaC2H302, C2H302H (C2H302- = acetate) B. O NaF, HF O D.NaCl, HCI H3PO4, KH P04 OE QUESTION 17 colmats the facoltinn hat er da Hand Min Click Save and sharque and submit. Click Save to say all are Remaining Time: 1 hour, 21 minutes, 41 seconds. Question Completion Status: Let's suppose that the pH of a solution of...
select all that apply please Question Completion Status: QUESTION 1 Which of the following are rings? 7Z Z/18Z QC/2) = (a + bv2 : 0,5 € Q} QCV2, V3) = {a + b 2 + c/3 +0V6: 2,6,c,d E QI ZIV3] = {a + bv3: a, b € Z} R= {a + b2 : a,b e Q} Z[i] = {a + bi: a,b E Z} 2/3) = (a + b3 + c3V9:0,b,c E Q] QUESTION 2
Question 28 3 pts What is the pH of an aqueous solution after 10.0 mL of 0.20 M NaOH is added to a 35.0 mL of 0.30 MHCIO? 05.12 O 2.77 O 3.48 6.89 lonization Constants for Acids at 25°C Name Formula Kai К2 Kaz Acetic Arsenic 1.0 x 107 3.0 x 10-12 Arsenous Ascorbic 1.6 x 10-12 Benzoic Boric HC2H302 H₂A504 НАО H2C8H08 HG,HgO2 H803 HC H102 H.CO, HC H20201 HCIOZ HyCH07 HCNO Butanol Carbonic 5.6 x 10-11 Chloroacetic...
Remaining Time: 05 minutes, 18 seconds. Question Completion Status: Given the following sequence all 1 5 10 15 20 25 30 35 5- AAA TGC ATG TTG CCA CCT GAG CAT CCC GTG ACC GGA-3' 3'- TTT ACG TAC AAC GGT GGA CTC GTA GGG CAC TGG CCT -5' Transcribe Translate Give the new amino acid sequence for a one base pair insertion "C" at position 15 (CCC ACC...) What single base pair change can yield a nonsense mutation in...
Expand Question Completion Status: QUESTION 1 Which of the following sentences contains the correct ending punctuation? Janice asked, "Do you know why the door to the study room is locked?" Janice asked, "Do you know why the door to the study room is locked!" Janice asked, "Do you know why the door to the study room is locked." 4 points QUESTION 2 Which of the following sentences contains the correct ending punctuation? Carlo asked Brittany which professor he should take...
Please help with solving Question 1 (A-C) Thank you! Unless otherwise specified in the problem, you may assume that all solutions are at 25°C. 1. 50.0 mL of a pH 6.00 carbonic acid buffer is titrated with 0.2857 M NaOH, requiring 17.47 mL to reach the second equivalence point. a. Calculate the molarity of carbonic acid and bicarbonate in the original buffer. Carbonic acid: Bicarbonate: b. Calculate the pH of the solution after a total of 100.0 mL of 0.2857...