Organic Chemistry Questions

A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to answer the questions below. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of copper atoms?

Classify each of the following mixtures as either homogeneous or heterogeneous: oil and vinegar salad dressing gasoline sand and salt

a. Explain how the ionization energy of atoms changes when proceeding down a group of the Periodic Table at first increases and then decreases generally decreases generally increases at first decreases and then increases b. Explain why this change occurs. Electrons experience an increasingly stronger pull by the nucleus. The nuclear charge is higher. The shielding of an atom's outermost electrons decreases. Electrons are farther from the positively charged nucleus..

An organic solvent has a density of 1.18 g/mL. What volume is occupied by 30.0 g of the liquid?

Take powers and roots as needed on your calculator to complete the following: a = 0.556³ b5 = 112 c = 3.00^3.94 d¹.39= 2.14

Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. An automobile engine with a displacement of 3.27×10^2

Cyclopentene is treated with hydrogen gas (H₂) and a platinum catalyst to form the product cyclopentane. This reaction can be generally classified as what type of process? A) oxidation B) elimination C) addition D) substitution

In a hydrogenation reaction of an alkene, hydrogen atoms are added to a double bond to form an A) alkane B) alkene C) alkyne D) aromatic ring

The density of pure silver is 10.5 g/cm³ at 20°C. If 9.50 g of pure silver pellets is added to a graduated cylinder containing 10.2 mL of water, to what volume level will the water in the cylinder rise?

Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 325 mL of insulin at a concentration of 30.0 mg/mL. What is the total mass of insulin in the bottle?

In the name 2-chloropropane, what does the 2 represent? It tells you there are two (2) ways this compound could be drawn. Where on the parent the substituent is attached, so in this case the substituent is located on carbon 2. How many carbon atoms are in the parent chain, so in this case, there are 2 carbons. It tells you there are 2 substituents on the parent chain.

A proton and a neutron have the same mass but opposite charges. true false The mass of an electron is considerably smaller than that of a neutron. true false An atomic mass unit (amu) is a unit of length. true false By definition, 1 amu is equal to 1.6605 x 107-24 true false. The protons and neutrons of an atom are found in the nucleus. true false

How many significant figures are there in each of the following numbers? 69.326 0.063486 0.36 307.19

State whether the kinetic energy of the underlined object increases or decreases as a result of the change described. an air plane takes off a tennis ball is served a golf ball lands on a green

Classify the underlined property as chemical or physical: When aluminum foil is placed into liquid bromine a white solid forms. Plants use carbon dioxide from the air to produce oxygen. Iodine is a purple solid that melts at 114 °C.

a. When 45.045 and 47.195 are added, the answer should be based on Enter the answer with the correct number of digits. b. When 45.045 + 47.195 = 87.11 is divided by 22.54, the answer should be based on

Calculate the mass of bromobenzene in 2.04 qt of bromobenzene. The density of bromobenzene is 1.49 g/cm³.

You are driving 40. mi/h and take your eyes off the road for "just a second" (exactly one second). What distance (in feet) do you travel in this time?

Which of the following reaction conditions results in Markovnikov addition to an unsymmetric alkene? A) HBr B) HBr with peroxides C) Br₂ D) H₂ with Pd-C E) KMnO4 with NaOH

How much will it cost to purchase materials for a fence if 86 feet are needed and the fencing costs $41.74/yard? Set up the problem below and calculate the cost. Place your conversion factors in order such that "feet" cancels first.

There are 12 eggs in a dozen. If a farmer's chickens produce an average of 322 dozen eggs in a month, how many eggs are reported per month? 322 dozen x 12 eggs/dozen eggs

In the laboratory a student finds that it takes 53.2 calories to increase the temperature of 14.4 grams of solid magnesium from 20.3 to 36.5 degrees Celsius. Based on these data, what is the specific heat of magnesium?

The liquid decane has a density of 0.727 g/mL at 25.0°C. If a 145 gram sample of this compound is needed, what volume of the liquid at 25.0°C must be provided?

In the winter, a heated home in the Northeast might be maintained at a temperature of 69°F. What is this temperature on the Celsius and Kelvin scales?

Explain why it is important to follow the steps in order and use the proper materials. Use details from the text to support your answer.

Name these elements (try not to look at a Periodic Table): Ar bi Ca Na

The world record for the hundred meter dash is 9.58 s. What is the corresponding average speed in units of m/s, km/h, ft/s, and mi/h? a. In units of m/s? b. In units of km/h? c. In units of ft/s? d. In units of mi/h? e. At this speed, how long would it take to run 2.00 × 10² yards?

The melting point of an unknown solid is determined to be 41°C. What is this temperature on the Fahrenheit and Kelvin scales?

You have a 100.0-mL graduated cylinder containing 50.0 mL of water. You carefully place a 178-g piece of brass (density = 8.56 g/mL) into the water. What is the final volume reading in the graduated cylinder?

Which of the following is the correct name for the compound with formula Ca3P₂? (A) Tricalcium diphosphorus (B) Calcium phosphite (C) Calcium phosphate (D) Calcium diphosphate (E) Calcium phosphide

The label on a container of olive oil says 1.850 gal. This volume can be expressed in many different units. How many milliliters does the container hold?

Anna Karenina tells the stories of Anna and Levin. Both the stories run parallel. Which narrative technique is adopted in Anna Karenina? Use secondary subplot Multiple plot lines Reflection Description

The theory that no two electrons in the same atom can have the same four quantum numbers is described by the: a) Aufbau Principle b) Pauli Exclusion Principle c) None of these choices is correct d) Heisenberg's Uncertainty Principle

A sample has a measured temperature of 764.2 °C. What is its temperature in °F?

Given that hydrogen carbonate ion, HCO3(aq), has a K₂ of 4.8 x 10-11, which of the following is the K, for the carbonate ion, CO3² (aq)? a) 2.1 x 10-4 b) 4.8 x 10-11 c) 1.0 x 10-14 d) 1.0 x 10-7

Write each of the following numbers to 3 significant figures in exponential or scientific notation. Write each number with only one non-zero digit before the decimal point. 718 0.00637 0.0519 7310

Write the correct name for each compound below. 1. ((H3C)2CH)2O:| 2. H3C-CH2-O-CH2-CH3: 3. (H3C)3C-O-CH3: 4. H3C-O-CH2-CH2-O-CH3: 5. (C6H12)2O:

How many C atoms were needed to make 16 molecules of Mo(CO),(CHN);? How many TOTAL atoms are needed to make 16 molecules of Mo(CO),(CHN),? How many moles of atoms came together to make 0.5 moles of Mo(CO),(CHN);? Given the ion C₂0, what species would you expect to form with each of the following ions?

How much energy is required to raise the temperature of 12.3 grams of solid iron from 23.4°C to 36.9°C? The specific heat of iron is 0.106 cal/g °C.

Eucalyptus leaves are the food source for panda bears. Eucalyptol is an oil found in these leaves. Analysis of eucalyptol indicates it has a molar mass of 154 g/mol and contains 77.87% C, 11.76% H, and 10.37% O. Determine the molecular formula of eucalyptol.

The boiling point of a liquid is found to be 295 K. What is this temperature on the Celsius and Fahrenheit scales? Temperature = Temperature =

When you blow bubbles in a glass of water, the following reactions take place: H₂O+CO2-->H₂CO3>H*+HCO 3 A. What type of reaction is H₂O+CO2 -->H₂CO3 B. What type of reaction is H₂CO3-H* +H CO3

A nickel is found to have a mass of 4.95 g. Using unit analysis, show what the mass of this nickel is in kg.

The liquid 3-chloro-1,1,1-trifluoropropane has a density of 1.33 g/mL at 20.0 °C. If a 64.7 mL sample of this compound is provided, what is the mass of the liquid at 20.0 °C that must be provided?

A slice of cheese has a mass of 18 g and a volume of 17 cm³. What is the density of the cheese in units of g/cm³ and g/mL?

For the following reaction, 0.119 moles of calcium hydroxide are mixed with 0.339 moles of hydrochloric acid. calcium hydroxide (aq) + hydrochloric acid (aq) → calcium chloride (aq) + water (2) What is the formula for the limiting reagent? What is the maximum amount of calcium chloride that can be produced?

If the length, width, and height of a box are 9.25 cm, 5.00 cm and 3.00 cm, respectively, what is the volume of the box in units of milliliters and liters? (a) How many mL will the box contain? (b) How many L will the box contain?

1. How many MOLES of sulfur hexafluoride are present in 1.35 grams of this compound? 2. How many GRAMS of sulfur hexafluoride are present in 2.04 moles of this compound?

A copy of your chemistry textbook is found to have a length of 0.265 meters. Using unit analysis, show what the length of the copy of your chemistry textbook is in millimeters.

Which of the following compounds will form a cyclic ring as a major product on treatment of given compound with one equivalent of Mg in dry ether? BrCH₂CH₂Br BrCH₂CH₂CH₂Br BrCH₂CH=CHCH₂Br BrCH₂CH₂CH₂CH₂Br