Atomic Weights, g/mol: O =16 Na = 23 S=32 CI =35 Ca=40 C = 12 N =14 H=1 P= 31 1. A gaseous mixture contains oxygen gas and nitrogen gas. If the weight of oxygen gas is 20.0 grams and its mole fraction is 0.18, find the weight of nitrogen gas in the mixture. 2. A solution of sodium hydroxide has a density of 1.14 g/mL and contains 32.8% sodium hydroxide by mass. If 40.0 mL of this solution is diluted with 30.0 mL of water, what is the concentration of the dilute sodium hydroxide? It is desired to prepare calcium sulfate solution by dissolving 200 grams calcium sulfate in enough water to a volume of 850 mL The solution has a specific gravity of 1.26. Calculate: 3. % by wt ppm solute molality a. d. mole fraction of solute b. е. Normality С.

Atomic Weights, g/mol: O =16 Na = 23 S=32 CI =35 Ca=40 C = 12 N =14 H=1 P= 31 1. A gaseous mixture contains oxygen gas and nitrogen gas. If the weight of oxygen gas is 20.0 grams and its mole fraction is 0.18, find the weight of nitrogen gas in the mixture. 2. A solution of sodium hydroxide has a density of 1.14 g/mL and contains 32.8% sodium hydroxide by mass. If 40.0 mL of this solution is diluted with 30.0 mL of water, what is the concentration of the dilute sodium hydroxide? It is desired to prepare calcium sulfate solution by dissolving 200 grams calcium sulfate in enough water to a volume of 850 mL The solution has a specific gravity of 1.26. Calculate: 3. % by wt ppm solute molality a. d. mole fraction of solute b. е. Normality С.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

What are the safety hazards of these chemicals Acetic anhydride (108-24-7) Formic acid (64-18-60) Benzotriazole (95-14-7) N-Formylbenzotriazole (72773-04-7)
A number of substances containing positively polarized carbon atoms have been labeled as "cancer suspect agents" (i.e., suspected carcinogens or cancer-inducing compounds). It has been suggested that the presence of such carbon atoms is responsible for the carcinogenic properties of these molecules. Assuming that the extent of polarization is proportional to carcinogenic potential, how would you rank the compounds with regard to cancer-causing potency? Most carcinogenic Least carcinogenic Answer Bank (CH,), Si CH;Cl CICH, OCH,CI CH,OCH,CI (CH;), C*
4-6 please
None
Please draw the active form of this "O HỌ NH2
Can you please give an explanation for question 3(A to J) or just answers? Thank you
TO 23 #F ** ## 4 .. ||| V Classify each of the molecules below. A B 4 CH3C=C NH₂2 primary amine Osecondary amine O tertiary amine Explanation G Identifying prinary, secondary, and tertiary amines A $ W S not an amine at all MB 4 # @ #D S P D MA C D *** # D # R # *40 O M PRE 6 19 # . PP G 4 CO @ 25 * 4 10 10 # ♥ a # B sh • Check B B => R W # B RS 9 Ra 00 • a B # S 66 D W W PR ** 19 S # 4 4 BA M @ D #** 4 68 # $ D → * ** @ 48 4 9 S B S a #4 NG D B 55 # 46 3 S 62 4 TO 0 # # 9 4 D B 6 19 4 C 99 6 O primary amine O secondary amine O tertiary amine O not an amine at all P C B . 10 S 4 4 * 4 CH3 —CH=CH—NH2 S ## S 9 B B D Ⓡ 46 9 12 . O 16 S W 4 D # a 0 W #4 D D 1 @ 4 d ♥ 30. D # @ a S 12 #D $ B ** * B D S B 00 # 99 * W e A W 1 W S 9 A D * s @ 10 6 66 19 S P P 14 * 0 a 4 A 16 糖 U a V # # A ** DO E C 24 SP ** N $ B a **** @G S D # 4 S -A W C NE # SOP * ## @A 44 • B S * 15 B $ L ** * # W A Or C D # ** 4. $ A 68 B ** $3 RE B O 6 C $ * O * # @@ #D De A 16 8 W N #0 3 @a *** W 慈 B 4 G # ▶ 10 4 BO $…
ChemActivity 46A CA46A Overview of Amino Acids and Proteins (What does it mean for a protein to be denatured?) Model 1: General structure of an a-amino acid in acidic, neutral, or basic solution. The building blocks of proteins are a-amino acids, small molecules that contain a carboxylic acid and an amino group. The amino group is connected to the carbon next to the proboxyl group, designated the & carbon. There are 20 different amino acids found he proteins, only in the side chain ("R group"). O R-CH-C-OH NH3 + basic (high pH) acidic (low pH) Amino acids contain both a carboxylic acid (proton donor) and a basic amino group (proton acceptor). The neutral "zwitterionic" form is commonly found in aqueous solutions with a pH near neutrality. The side chain "R" may be one of 20 choices. a. at low pH: -NH₂ or -NH3+ b. near neutral pH: -NH₂ or -NH3* c. at high pH: -NH₂ or -NH3* 3. Circle the correct ionization state of a carboxyl group a. at low pH: -COOH or -COO- b. near neutral pH: -COOH…
In accordance to Dyuklo-Traube's rule in a homologous series of carboxylic acids, alcohols, amines at extension of length of the hydrocarbonic chain by one CH2-group the surface activity of substances is Select one: a. increased about 3-3,5 times b. increased about 0.5-1.5 times С. decreased about 30 times d. decreased about 2-3,5 times е. increased about 15 times
A plasma sample contains 3.44 moles of C2O42-. How many equivalents of C2O42- are present in the plasma? 1.72 Eq 6.88 Eq 3.44 Eq 0.860 Eq 13.8 Eq
Need help determining the acidic and neutral components in an unknown sample. Have one of the following functional groups: Aldehyde Amine Ketone Alcohol Carboxylic acid Ester Phenol May have: Chlorine Ether Bromine Alkene lodine Alkyne Nitro Aromatic
Consider propanoic (CH3CH2CH2CO2H) acid and pentanoic (CH3CH2CH2CH2CO2H) acid and the corresponding alcohols with the same number of carbons, propanol (CH3CH2CH2COH) and pentanol (CH3CH2CH2CH2COH). Select the class of compound that is more soluble. {one answer] Select the best explanation for your answer to the previous question. [a second answer] Group of answer choices a. The solubility of alcohols in water decreases with increasing chain length. b. Propanoic acid and pentanoic acid are more soluble in water than the corresponding alcohol. c. Carboxylic acids are generally more soluble in water than alcohols of the same chain length because of increased hydrogen bonding with the -COOH functional group. d. Propanol and pentanol are more soluble in water than the corresponding carboxylic acid e. The solubility of carboxylic acids in water decreases with increasing chain length. f. Alcohols are generally more soluble in water than carboxylic acids of the same…