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Concept explainers
(a)
Interpretation:
Total number of atoms in
Concept Introduction:
Statement that uses chemical symbols and formulas instead of words in order to describe the changes that takes place in a
- Correct formulas of the reactants are written in left side of chemical equation.
- Correct formulas of products are written in right side of chemical equation.
- An arrow is placed between reactants and products which point towards the products.
- If two or more substances are present in reactant and product, plus sign is used to separate them.
Balanced chemical equation is the one that has equal number of atoms of each element that is involved in the chemical reaction on both sides of the chemical equation. An unbalanced chemical equation can be balanced by adding coefficients to the equation. It is a number that is placed in left side of the chemical formula so that it changes the amount only and not the identity.
(b)
Interpretation:
Total number of atoms in
Concept Introduction:
Statement that uses chemical symbols and formulas instead of words in order to describe the changes that takes place in a chemical reaction is known as chemical equation. Reactants are the substances that are present in starting of the chemical reaction and it is entered in left side of the chemical equation. Products are the substance that is obtained from the reactants as a final outcome of the chemical reaction and it is entered in right side of the chemical equation. In order to write a chemical equation four conventions are used and they are,
- Correct formulas of the reactants are written in left side of chemical equation.
- Correct formulas of products are written in right side of chemical equation.
- An arrow is placed between reactants and products which point towards the products.
- If two or more substances are present in reactant and product, plus sign is used to separate them.
Balanced chemical equation is the one that has equal number of atoms of each element that is involved in the chemical reaction on both sides of the chemical equation. An unbalanced chemical equation can be balanced by adding coefficients to the equation. It is a number that is placed in left side of the chemical formula so that it changes the amount only and not the identity.
(c)
Interpretation:
Total number of atoms in
Concept Introduction:
Statement that uses chemical symbols and formulas instead of words in order to describe the changes that takes place in a chemical reaction is known as chemical equation. Reactants are the substances that are present in starting of the chemical reaction and it is entered in left side of the chemical equation. Products are the substance that is obtained from the reactants as a final outcome of the chemical reaction and it is entered in right side of the chemical equation. In order to write a chemical equation four conventions are used and they are,
- Correct formulas of the reactants are written in left side of chemical equation.
- Correct formulas of products are written in right side of chemical equation.
- An arrow is placed between reactants and products which point towards the products.
- If two or more substances are present in reactant and product, plus sign is used to separate them.
Balanced chemical equation is the one that has equal number of atoms of each element that is involved in the chemical reaction on both sides of the chemical equation. An unbalanced chemical equation can be balanced by adding coefficients to the equation. It is a number that is placed in left side of the chemical formula so that it changes the amount only and not the identity.
(d)
Interpretation:
Total number of atoms in
Concept Introduction:
Statement that uses chemical symbols and formulas instead of words in order to describe the changes that takes place in a chemical reaction is known as chemical equation. Reactants are the substances that are present in starting of the chemical reaction and it is entered in left side of the chemical equation. Products are the substance that is obtained from the reactants as a final outcome of the chemical reaction and it is entered in right side of the chemical equation. In order to write a chemical equation four conventions are used and they are,
- Correct formulas of the reactants are written in left side of chemical equation.
- Correct formulas of products are written in right side of chemical equation.
- An arrow is placed between reactants and products which point towards the products.
- If two or more substances are present in reactant and product, plus sign is used to separate them.
Balanced chemical equation is the one that has equal number of atoms of each element that is involved in the chemical reaction on both sides of the chemical equation. An unbalanced chemical equation can be balanced by adding coefficients to the equation. It is a number that is placed in left side of the chemical formula so that it changes the amount only and not the identity.
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Chapter 6 Solutions
Bundle: General, Organic, and Biological Chemistry, 7th + OWLv2 Quick Prep for General Chemistry, 4 terms (24 months) Printed Access Card
- Work out the following problems:a. Will an H bond form between H3C—CH=O and H2O? Draw asimple figure to support your answer.b. Draw the following molecules and determine which are polar:Cl2, NH3, CH4.c. What is the pH of a solution with a concentration of0.00001 moles/ml (M) of H+?arrow_forwardThe molecular weight of ethanol (CH3CH2OH) is46 and its density is 0.789 g/cm3.A. What is the molarity of ethanol in beer that is 5%ethanol by volume? [Alcohol content of beer varies fromabout 4% (lite beer) to 8% (stout beer).]B. The legal limit for a driver’s blood alcohol contentvaries, but 80 mg of ethanol per 100 mL of blood (usuallyreferred to as a blood alcohol level of 0.08) is typical. Whatis the molarity of ethanol in a person at this legal limit?C. How many 12-oz (355-mL) bottles of 5% beer coulda 70-kg person drink and remain under the legal limit? A70-kg person contains about 40 liters of water. Ignore themetabolism of ethanol, and assume that the water contentof the person remains constant.arrow_forwardThe following 'H NMR and IR spectra are obtained for an unknown compound with an empirical formula of C3H1403. Using the information given, determine the structure of the unknown compound. Show all details in your answer. a) 100 %T 88 20 35ee 3eee 25ee 2e0e 1see 1e00 cm1 2H зн 3H 2H 2H 2H 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 PPM 2878. 16 1716. 08 1234.60 1157.44 BE'T6 882.49arrow_forward
- Draw the Fischer projection formula for each of the following molecules. 1-36 а. b. ОН НО CH3 CI H i CH3 CH3 d. CH3 с. C. Cl ОН H CI НО Harrow_forwardRefer to the following titration curve below: 13 12 11 10 7 6 5 4 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Volume of Titrant / mL - Unknown Acid 0.10 mol/L - titrant = NaOH 0.1 mol/L What is the isoelectric point of histidine, according to the titration curve? Input your answer until the first decimal point. 2. 9,arrow_forwardWhat structure is labeled B? B A 台 G H Farrow_forward
- A solution with a density of 0.876 g>mL contains 5.0 g of toluene 1C7H82 and 225 g of benzene. Calculate the molarity of the solution.arrow_forwardWork out the following problems: a. What is the pH of a solution with a concentration of0.00001 moles/ml (M) of OH−?b. Draw the atomic structure of magnesium and predict what kindsof bonds it will make.c. What kind of ion would you expect magnesium to make on thebasis of its valence?arrow_forwardExplain how you would prepare 100ml of 10mMProline solution given that the molecular mass of proline= 115.13 g/molarrow_forward
- The molecular weight of glucose is 180.16 g/mol. Say you want to make 100 ml of a 0.6M solution of glucose. How much glucose and water should you use? Show your calculations for how you would make this solution.arrow_forwardA physician prescribes a prescription of Doriden, 325 mg, which requires you to prepare 30 capsules to be taken by a patient 1 hour before bedtime. Assuming that you will make a minimum of extra powder, how many tablets will you use to make this prescription? How many capsules will you calculate for? (Doriden is available in your pharmacy as a 500 mg tablet weighing 750 mg) Select one: a. 20 tablets, 30.77 capsules b. 19 tablets, 30 capsules c. 19 tablets, 32 capsules d. 20 tablets, 40 capsules What is the weight in grams of 1 Liter of alcohol (density, 0.816 g/mL? O O Oarrow_forwardThe ionization of p-nitrophenol is shown below (pKa = 7.0): a. Identify the weak acid and conjugate base. b. At pH 7, what are the relative concentrations of ionized and un-ionized p-nitrophenol? c. If enough concentrated hydrochloric acid is added to a solution of p-nitrophenol to lower the pH from 7 to 5, what will happen to the relative concentrations of the ionized and un-ionized forms? d. Ionized p-nitrophenol has a yellow color, while the un-ionized form is colorless. The yellow color can be measured using a spectrophotometer at 400nm. In order to determine the total amount of p-nitrophenol in a solution, would you perform the spectrophotometer reading at an acidic or basic pH? Clearly explain why? e. A solution of p-nitrophenol at pH 7.95 was found to have an A400 of 0.255 . What is the total concentration (in µM) of p-nitrophenol (ionized plus un-ionized) in the solution? The molar extinction coefficient of p-nitrophenol is 18,500 M-1cm-1 and the pKa is 7.arrow_forward
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