Chemistry Questions and Answers

. 11:24 X Courses Module 03 Zahara Noor wants to create a presentation of different molecules that helped change the world, but she needs help in naming them, so that anyone is able to understand th...

. Now, provide the following information about your chosen molecule: Describe why the molecule is important and its function within the human body. Use the editor to format your answer Question 8 Dr...

Please help. . C learning.rasmussen.edu/ultra/courses/_110044_1/grades/assessment/_11129874_1/overview/attempt/_24708896_1?courseld=_110044_1 Calculate the average atomic mass for the following isoto...

Question 31 and 32, please help me find the correct answer.. Identify the bond angles for the compound: CO2 A 109.50 B 120 180 D 1050 Question 32 Identify all of the intermolecular forces within the m...

Choose one molecule that is vital to the human body. Provide the following information: Name of the molecule Now, provide the following information: Molecular formula Now, provide the following inform...

Liv is trying to decide which molecules to use for her chemistry reaction. The first thing she has to do is find the molar mass of each of the molecules she can potentially use. Calculate the molar ma...

Question Below,. Question 8 (9 points) Given the following aqueous reactants, write a balanced chemical equation to describe the reaction that occurs when they are mixed. Include the formulas and phys...

Reference this image and identify whether the following solution is saturated, supersaturated or undersaturated; KNO3 at a solubility of 140 at 100* C 300 - Sugar 260- KNO 220 180 Solubility (g solute...

understanding resonance is a key concept to understanding the different ways a molecule can exist, simultaneously. how many resonance structures does the following molecule have: HPO4^2- ANSWER CHOICE...

During her presentation, Zahara was asked several questions from the audience and to provide the molecular formula for molecules that the audience had questions about. Show Zahara how to name Type 2 i...

In the conversion of Malic to Lactic acid, one Carbon is lost as CO 2 . If an ML fermentation is carried out on a dry wine, would you expect a direct physical measurement like a density reading to be ...

You are concerned that you may have a Brettanomyces infection in your cellar. Describe a quality control program that you would set up to determine the extent of the infection and to help limit its sp...

Labs 4 Less © , your local discount laboratory, can provide you with an analysis for your must or juice that is the TOTAL concentration (in mg/L) of ALL the amino acids present in a pre fermentation ...

You have just returned from the supermarket with two bottles of white wine from an appellation that is better known for anarchists than winemakers. Surprisingly, the wine is delicious, with a ...

A custom crush client wants you to make a Chardonnay that smells just like "Movie theater popcorn with extra butter." Outline 5 things that you might do to the nice Chardonnay juice/wine to give you...

You just purchased a pump that can move (on average) 7 L/sec of wine. Using the information provided above and your new pump, how many minutes will it take to fill Tank 320, which has a volume of 1,...

While rummaging through the cabinets in your winery lab, you find a container of liquid labeled only, " 20.00 mL HCl (aq) ". Wondering if it will be sufficiently strong to remove the rust from your ...

You have just been named the new Lab Director for an historic Napa Valley winery. Before you start your FSO 2 analysis via the A.O. method you realize you are out of 3% H 2 O 2 and you have 30 samples...

You would like to add DAP to a 1,550 gal fermenter of Cabernet Sauvignon to increase its YAN level to 250 ppm N. Your lab has determined its current level of YAN to be 127 ppm N. If each gram ...

Identify the element associated with the following electron configurations. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 1 4d 8 Identify the element associated with the following electron configurat...

Question 20 1 Point During her presentation, Zahara was asked several questions from the audience and to provide the molecular formula for molecules that the audience had questions about. Help Zahara ...

Please help with both questions. Question 16 1 Point Zahara Noor wants to create a presentation of different molecules that helped change the world, but she needs help in naming them, so that anyone i...

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1. Liv is trying to decide which molecules to use for her chemistry reaction. The first thing she has to do is find the molar mass of each of the molecules she can potentially use. Calculate the molar...

C. Examine the following mixtures: Identify whether homogeneous or heterogeneous. Describe the method of separating the component. 1. 1.0 g iron filing and 1.0 g of sulfur 2. 3.0 ml of silver nitrate ...

1) Calculate the concentration of a solution using the following methods with accuracy: Percentage concentration (V/V, W/V, or W/W) Molar concentration (moles per litre) 2) Describe the steps tak...

1) Write net ionic equations for double displacement reactions with precision (K) 2) Distinguish between a strong and weak acid or base by considering the degree to which it ionizes in water with ap...

6.If the energy of the system is the sum of the energy and work, identify the following: What happens to the volume if work was done on the system? A)Volume increases B)Volume decreases 7.If the energ...

du/ultra/ mail Standard Chartered... News Translate student portal @ Mail - Zephaniah K.. Question 4 1 Point What are the 3 interactions that happens in a solution between the solute and the solvents?...

Use balanced chemical equations to determine mole ratios for different chemicals in the reaction with accuracy (K) Perform stoichiometric 1 calculations to predict the amount of reactant or product re...

1) Make predictions about the expected products in chemical reactions based on the reactants present and the type of reaction taking place with relevance and logic 2) Use metal and nonmetal activi...

Hello I need a answer for this question quick no explanation needed!!. Question 1 (1 point) Deduce the oxidation states of the species in bold in the following compounds: KIO 3(aq) O a ) +4 O b ) + 5 ...

13)Which of these examples are liquids with low vapor pressure (doesn't evaporate easily)? A)Gasoline, propane B)Glycerin, motor oil, honey C)Water, alcohol D)Rubbing alcohol, acetone 14)Which liquid ...

11)In a solid state, molecules can move past each other. a)true b)false 12)Liquids have more tightly packed molecules than solids. a)true b)false 13)Which of these examples are liquids of high viscosi...

1. Identify which of these molecules has the highest boiling point and give the reasoning why in terms of intermolecular force. CHCl 3 , CH 3 COOH, CO 2 2. Calculate the molality of the following s...

1.) What are the 3 interactions that happens in a solution between the solute and the solvents? Describe the interactions in terms of salt dissolved in water. 2.) Describe the 4 standards that gase...

Assessment X + C D learning.rasmussen.edu/ultra/courses/_98208_1/outline/assessment/_9742123_1/overview/attempt/_23202627_1?courseld=_98208_1 Design Space Preschool Drawing.. You have plenty of salts ...

Lab Vered Unbuffered PH - 8.0 Buffer A strong acid has been poured into both beakers in the image on the left. Why did the color of the unbuffered solution change, but the buffered solution remained t...

1.) Consider this reaction: 6 CO 2 + 6 H 2 O + light C 6 H 12 O 6 + 6 O 2 If there were 2.38 x 10 2 g of H 2 O, 18.6 moles of CO 2 , and plenty of light, which reactant would be the limiting reactant?...

1.) Plants undergo photosynthesis in order to provide oxygen into the air, which is vital for the human body to stay alive: 6 CO 2 + 6 H 2 O + light C 6 H 12 O 6 + 6 O 2 If there were 2.38 x 10 2 g of...

1.) Calculate the concentration for the following pH: pH = 13.8 2.) Calculate the pH for the following concentration: [H 3 O + ] = 10.33 x 10 -9 M 3.) Calculate the pH for the following co...

1.) You have plenty of salts that are in front of you and you are trying to figure out which salts are soluble in water, and which ones of their products are soluble in water. For the following equati...

1. During her presentation, Zahara was asked several questions from the audience and to provide the molecular formula for molecules that the audience had questions about. Help Zahara classify...

X Question 23 1 Point During her presentation, Zahara was asked several questions from the audience and to provide the C molecular formula for molecules that the audience had questions about. Show Zah...

4 Question 16 O Zahara Noor wants to create a presentation of different molecules that helped change the world, but she needs help in naming them, so that anyone is able to understand the molecules th...

Question 11 Dr. Laila Malik has been tasked to help her graduate student with making a ground- breaking molecule, but she has to start with helping the student understand how different elements bond t...

The National Institute of Health (NIH) provides dietary recommendations for adults over various supplements. Convert the following recommendations for supplements over to mass or moles. A daily caffei...

Now that you know the details about how oxidation-reduction reactions occur, here's a simple trick to remember what is happening: Based off of this, identify the following for this reaction: (Remember...

Running a strong enough electric current through water will cause it to decompose into hydrogen and oxygen gas. Write the balanced chemical equation for this process. What is being oxidized, and what ...

10. Now that you know the details about how oxidation-reduction reactions occur, here's a simple trick to remember what is happening: Based off of this, identify the following for this reaction: AgN...

1. Combustion reactions are a notable source of carbon dioxide in the environment. Using the following balanced equation, how many grams of carbon dioxide is formed when 100.00 g of propane (C3...

1. Classify each of the following chemical reactions as: synthesis, decomposition, single-displacement, or double-displacement. Mole-to-Mole Conversions 3. Given the following balanced equation, how m...

Convert 0.715 atm to mm Hg. 543.4 mm Hg Convert 63.3 kPa to mm Hg. 472.52 mm Hg Convert 2.15 atm to kPa. 218 kPa Convert 752 mm Hg to atm. 0.99 atm (Do not show your work in the space provided; rec...

To understand the main properties of gases is important. For each of the following sentences, select the word that completes correctly the statement about gases. a. Gases always fill their contai...

1.Sketch the galvanic cell represented by the following line notation. After drawing the galvanic cell, write the two half-reactions, write the net ionic redox reaction equation and identify the anode...

1.Potassium permanganate is a deep purple compound that can be used to determine the concentration of sulfur dioxide in the atmosphere. The reaction between sulfur oxide and potassium permanganate is ...

1.The following equation represents a reaction that took place in an acidic medium. Balance the equation using the half reactions methods. Identify each half-reaction as reduction or oxidation. MnO4^-...

1.which of the following statements is true about galvanic cell A) Electrons travel from the copper electrode to the magnesium electrode B)Electrons travel from the magnesium electrode to the copper e...

Chemistry 30, practice question. Question 15 (1 point) The equation that represents the equilibrium of hydrogen sulfate ion is OHSO4 (ag) + H20(1) + H30*(ag) + 5042- ( aq) OHSO 4 (aq) + H(ag) + 5042- ...

Chemistry 30, practice question. Question 13 (1 point) Many barbecues use propane as their fuel source. The reaction that takes place is shown below: C3H8(8) + 5 02(8) - 3 CO2(8) + 4 H20(8) During thi...

Question 1 Use the reaction below to answer the following question: CO 2(g) + H 2(g) ↔ CO (g) + H 2 O (g) At equilibrium if H 2(g) is added then the Kc value and concentration of CO 2(g) ...

Penicillin antibiotics were among the first medications to be effective against many bacterial infections caused by staphylococci and streptococci. Penicillin G represented as HPg(s) is only slightly ...

Part 1 - Balance the following equations showing all your work. 1. NO 2 - + MnO 4 -  NO 3 - + Mn 2+ (in acidic solution) 2. I - + MnO 3 -  I 2 + MnO 2 (in basic solut...

Hello please help me solving these questions Instructions Five metals (Mg, Zn, Cu, Ag, Au) were tested in a series of mixtures to determine their identity. Each metal in solid form was placed into var...

5) What is the specific heat of a substance of 1500 J are required to raise the temperature of a 300.0 g sample from 25 Celsius to 40 Celsius? A) 333 J/g Celsius B) 4.18 J/g Celsius C) 33 J/g Celsius ...

Please someone help me solving these questions 10.00 mL of the Unknown Acid B with a concentration of 0.1205M was placed into an Erlenmeyer ﬂask containing an acid/base indicator. 4.83 mL of 0.2519M...

Hello please someone help me solving these questions How many mL of 1.000M carbonic acid are need to neutralize are needed to 20.00 mL of 0.2423M NaOH? Do not type units into your answer. Below is the...

Hello please someone help me solving these questions Below is the balanced equation for the neutralization of aqueous nitric acid with aqueous sodium hydroxide. How many moles of sodium hydroxide are ...

Please someone help me solving these questions please Below is an image of the data from Trial #3. Assuming the initial volume and ﬁnal volume read from the buret are 20.95 mL and 46.46 mL respectiv...

Hello please someone help me solving these questions Questions 1 - 4 are based on Trial #1. Below is an image from Trial #1. Trial #1 3 mL 3. 16ML --...- - -. Initial Volume 4 ml Buret 28 mL Erlenmeye...

How can we know that atoms exist and understand them if they are invisible? Atoms were thought to be indivisible (not able to be broken down). We now know that they are made of smaller particles. Shou...

A volume of 30.0 mL of a 0.740 M HNO3 solution is titrated with 0.680 M KOH calculate the volume of KOH required to reach the equivalence point. please express answer to three significant figures,...

1. The Law of Combining Volumes states that, at a constant temperature and pressure, volumes of gaseous reactants and products of chemical reactions are always simple ratios of _________ numbers. A. R...

1. Convert 48.46 degrees celsius to K (Do not show your work in the space provided; record only your final answer with the correct number of significant digits and the proper units.) 2. Convert 305.68...

1.Respiration is a three-step process that breaks down glucose and produces ATP. Describe each of the three steps. 2.A manufacturing company is trying to produce a lightweight but strong cart for use ...

Ammonia (NH3) is an example of a Brønsted-Lowry Base. i. Define the Brønsted-Lowry acid-base theory. ii. What's the pH of a solution of ammonia that has a concentration of 0.335 M? The Kb of ammonia...

6/10 Write the formula for the conjugate acid of each base Part A CH3NH2 Express your answer as a chemical formula. =???? Part B C5H5N Express your answer as a chemical formula. = ???? Part C NO3− E...

5/10 1.) Watch the animation, and observe the titration process using a standard 0.100 M sodium hydroxide solution to titrate 50.0 mL of a 0.100 M hydrochloric acid solution. Identify which of t...

4/10 1.) What is the pH of an aqueous solution with[H3O+] = 6×10 −12 M ? Express the pH numerically using one decimal place. pH= ???? 2.) Carbonated cola is more acidic than coffee or even o...

Part A (5/10) Calculate the molarity of a solution made by putting 55.8 g of NaNO3 into a beaker and diluting to 2.50 L. Express your answer to three significant figures including the appropriate...

11. a.increases or decreases b. weaker or stronger c. intermolecular or intramolecular 1 11 Natural gas is a complex mixture ed that can be separated into CH4, out of C2H6, C3H8, and C4H10 as it cools...

Thank you tion 1 True or false: Intramolecular forces et are responsible for chemical ered properties of matter. ed out of Select one: ag O True ion OFalse on 2 True or false: Intramolecular forces he...

Fetal hemoglobin differs from adult hemoglobin in that it is able to bind oxygen with greater affinity, allowing the fetus to obtain oxygen from the mother's bloodstream. This greater affinity is due ...

10.0 kJ of heat is absorbed by a gas dissociation reaction occurring reversibly and isothermally at 298 K in an elastic balloon (a closed system) which, together with atmospheric pressure, exerts a co...

You are given a 200-mL sample of surface water from Lake Ontario, and asked to determine the chemical oxygen demand (COD) of the sample. To do so, you reflux the sample with 15 mL of a 0.2M K 2 Cr 2 O...

Electroplating is a widely used process. One of the most popular electroplating processes involves the plating of two metals, nickel and chromium, in separate vats. Nickel is plated first because it a...

36.7 grams of FeS2 reacts with 50.9 grams of O2 by the reaction below. 4 FeS2 +11 O2 → 8 SO2 + 2 Fe2O3 The molar masses of the reaction components are: FeS2: 119.98 g/mol O2: 32.00 g/mol Fe2O...

2.) Calculate the number of Hydrogen atoms in 5.4 moles of Hydrogen. a.9.0 x 10 -24 Hydrogen atoms. b.3.3 x 10 24 Hydrogen atoms. c.3.3 x 10 -22 Hydrogen atoms. d.9.0 x 10 22 Hydrogen atoms. ...

Describe what an isotope is and explain how it relates to the masses you see for each element on the periodic table. ( why are the masses decimals instead of whole numbers). What is the difference bet...

In Alberta, raw natural gas is piped from the well site to one of the more than 800 gas treatment plants. At the plant, water and liquid hydrocarbons are removed from the gas befo it is chemically re...

The quantum model of the atom attempts to describe what atomic characteristic? Neutron and electron position Proton and electron position Neutron position Electron position ...

5. In each of the following reactions, indicate which substance is oxidized, which is reduced, which is the oxidizing agent, and which is the reducing agent: how did you decide which is which for eac...

The VSEPR theory explains: Molecular geometry Electron configuration Structure-function relationships Bond polarity Chemical bonding Question 2 How many bonding electron pair(s) and lone electron p...

Chemical bonding occurs because: Elements are chemically stable when the protons and neutrons are equal. Elements want to obtain eight valence electrons. Elements have a tendency to gain protons. Elem...

An ionic bond involves: The gain of electrons The loss and gain of electrons Unequal sharing of electrons The equal sharing of electrons The loss of electrons Question 2 The sharing of four electro...

What is the electron configuration for V? 1S22S22P63S23P64S24P3 1S22S22P63S23P64S23D4 1S22S22P63S23P64S24D3 1S22S22P63S23P64S23D3 1S22S22P63S23P64S23P3 Question 7 The Bohr Model explains electro...

A large car manufacturer is suspected of polluting the water supply of your town. You know the company uses aqueous lead (Pb 4+ (aq) ) in its factory and you have a hunch that somehow this lead is fin...