Q: A principal shell with a value of n=3 would contain s,p,d, and f orbitals true or false
A: A principal shell is indicated by the principal quantum number.
Q: A substance formed of crystals of equal numbers of cations and anions held together by ionic bonds…
A: Answer is b.) salt.
Q: a) Identify the following as element (atomic or molecular), compound or mixture. b) Explain your…
A: An atom of a element is composed of a single nucleus with a unique number of protons surrounded by…
Q: Chlorine has seven electrons in its valence shell. It accepts an electron to complete its octet and…
A: The chloride ion acts as an electrolyte and is present in all bodily fluids. It helps in the…
Q: Generally YAC contains how many elements?a) 1b) 2c) 3d) 4
A: YAC stands for yeast artificial chromosomes and is widely used in the field of genetic engineering.…
Q: Assume that the mixture of substances in drawing (a) undergoes a reaction. Which of the drawings…
A: The law of conservation of mass states the mass in an isolated system is neither created nor…
Q: What does it mean to say that a substance is radioactive?
A: A substance composed two or more elements bonded together via chemical bonds is known as a compound.…
Q: Elemental analysis of a compound with molar mass 342.3 g/mol gives the following mass percent…
A: Given Percentage of C= 42.11 % Percentage of H=6.48 % Percentage of O=51.41% To Calculate:…
Q: The atomic number on an element tells us the number of
A: An atom is made up of three kinds of subatomic particles called protons, neutrons, and electrons,…
Q: Which elements in each pair is more metallic? Silicon or aluminum
A: Introduction: A pure substance that can't be separated by compound methods, comprising of molecules…
Q: What does the atomic number tell us about an atom
A: The atomic number which is denoted by Z of a chemical element uniquely identifies the chemical…
Q: The atomic mass number of an atom is determined by the sum of the number of in the atom. (a) protons…
A: The total number of neutrons and protons in an atomic nucleus is called atomic mass number.
Q: The atomic mass of an element can be used to determine A) the chemical properties of the element…
A: Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of…
Q: What element does not react with other elements? Group of answer choices A. hydrogen B. helium C.…
A: Noble gases These are group 18 elements of the periodic table. They are usually chemically inert.…
Q: Arrange in order of increasing atomic size. (a) the period 2 elements Li, C, and F (b) the group…
A: According to the question, we have to arrange the following period or group elements in order of…
Q: Some dried beans with a 14C/12C ratio one-eighth of the current value are found in an old cave. How…
A: The primary way for the age determination of an old sample is carbon dating. The carbon-14 is…
Q: What is the difference between an a particle and a helium atom?
A: Alpha particles - Alpha particles consist of two protons and to neutrons bound together into a…
Q: a certain element consists of two stable isotopes. the first has a mass of 138 amu
A: Atoms of an element having same atomic number but different mass number are called isotopes of that…
Q: How many total atoms would be in one formula unit of (NH4)3PO4? 20, 4, 18, 16
A: Ammonium phosphate fertilizes lawns that are deficient in nitrogen and phosphates. Ammonium…
Q: In the accompanying figure, the atomic number refers to the:
A: The given is C (carbon) The atomic number is 6 The mass number is 12
Q: Which do you think has a higher boiling point, pentane or neopentane (2,2-dimethylpropane)? Why?
A: The boiling point is the temperature at which the pressure of the liquid changes to the state of the…
Q: Which element is likely to lose an electron more easily, Mg or S?
A: Valency of an element is the combining power or combining capacity of the element with other atoms…
Q: Which elements would be more likely to make a compound with another element
A: In chemistry an element very basic part of any molecule and it is a pure substance consisting only…
Q: If you add an electron to fluorine, what will result? A) a negatively charged anion O B) a different…
A: Anion: negatively charged ion. Cation: positively charged ion.
Q: the following? A. Thiamine B. Selenium C. Zinc
A: The clinical scenario is suggestive of keshan disease which is an endemic cardiomyopathy found in…
Q: _____________ compounds exclude water.
A: Rule of thumb that states that "like dissolves like" which means that polar molecules are dissolved…
Q: Which equation represents a chemical reaction that obeys the law of conservation of matter? O…
A: Mass cannot be produced nor be destroyed, it can be converted So the reaction in which equal number…
Q: In the periodic table, the elements are arrangedaccording to ________ .a. size c. mass numberb.…
A: A periodic table is a tabular table. It displays all the chemical elements in this table. Over time…
Q: A metal ion with a 2+ charge has 23 electrons and forms a compound with a halogen ion that contains…
A: As we know that atomic mass is the addition of proton and neutrons present in the nucleus, whereas…
Q: Name several inorganic compounds.
A: Inorganic compounds: These are those compound which does not contain hydrogen and carbon bond where…
Q: Fluorine has an atomic number of 9. Which of the following is true of fluorine? D A. It will lose an…
A: It will gain an electron to become an anion. Cations are positively charged species. Anions are…
Q: Table salt (sodium chloride) is made up of sodium and chlorine. We are able toeat the compound,…
A: Table salt is sodium chloride. It is made up of sodium and chlorine. Sodium is a metal and chlorine…
Q: In H2O how many hydrogen (h) atoms are present
A: Answer- 2 atoms. In H2O 2 hydrogen atoms are present.
Q: water 4.18 ethyl alcohol 2.44 benzene 1.80 sulfuric acid 1.40 ased on the information in the table,…
A: INTRODUCTION One of water's most significant properties is that it takes a lot of energy to heat it.…
Q: Why do you think compounds containing the heavy metal lead are poisonous?
A: Heavy metals are chemical elements that have high density and very toxic or poisonous even at their…
Q: Match the structure formula to the chemical formula for this substance
A: According to the question, a molecular structure is given. Now, we have to match the structural…
Q: How many H2O particles were produced by creating the following structure? R H R R -N-Ç, H-N-C,- H H…
A: Extention of a polypeptide chain is a typical dehydration reaction where OH from carboxyl group and…
Q: Which of the following is a hydroxide ion? H3O + H + H2O - OH -
A: Hydrogen is defined as the chemical element, having the symbol H. It has the atomic number 1. The…
Q: OCCURS IN WATER WITI 1. cobalt 2. strontium 3. selenium 4. vanadium
A: Osteoarthritis, also known as degenerative joint disease (DJD), is one of the most common type of…
Q: What is the purpose of subscripts in chemical formulas? So the chemist can multiply the chemical…
A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: How can you tell in an IR spectrum if the compound has just one or two oxygens? What is the…
A: Infrared Spectroscopy or IR spectroscopy is the study and measurement of interaction between the…
Q: In 5H2O how many hydrogen (H) atoms are present
A: Hydrogen atom is chemical atom which has atomic mass and number as 1. It has a single proton In it's…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Quinine ( C20 H24 N2 O2) is the most important alkaloid derived from cinchona bark. It is used as an antimalarial drug. For quinine, pK, = 5.1 and pK, = 9.7 ( pKp = – log Kp). Only 1 g quinine will dissolve in 1920.0 mL of solution. Calculate the pH of a saturated aqueous solution of quinine. Consider only the reaction | Q+ H2O= QH+ + OH- described by pK, where Q = quinine. pH =Explain how acetaminopen gives such spectroscopic and chromatographic graph by interpreting the peaks that appeared in the graphs. Fig1. Mass Spectrometric Chromatogram of Acetaminophen (the two graphs) Fig2. IR Spectrograph of AcetaminophenSuccinic acid is produced by Actinobacillus succinogenes with the following medium composition (g/L): glucose, 50; yeast extract, 5; NaCl, l; Na2HPO4, 0.3; NaH2PO4, 1.4; K2HPO4, 1.5; MgC12.6H20, 0.2; CaC12.2H20, 0.23. The pH is controlled and maintained at 3.63. Estimate the range of upper limit, if 0.8% of deadband is applied. With a schematic diagram, explain how to maintain the pH throughout the fermentation process.
- Prepare 200 ml of a 0.125 M stock of NaCl from a 1 M concentrated stock solution of NaCl.Most of the following conclusions regarding the photo shown above are correct Except: All of the following are correct regarding the disk diffusion test photos EXCEPT : Zone of inhibition Chlorine Chlorine Chlorine O-phenylphenol Hexachlorophene O-phenylphenol Hexachlorophene Hexachlorophene O-phenylpheno Quat Quat Quat Staphylococcus aureus (gram-positive) Escherichia coli Pseudomonas aeruginosa (gram-negative) (gram-negative) Select one: O to. Gram negative bacteria are the most sensitive to chemical agents O b. Only one of the four chemicals affected Pseudomonas O c. Gram positive bacteria are the most sensitive to disinfectants O d. Hexachlorophene was effective only against Gram positive bacteria. O and. Chlorine was effective against all bacteria bacteria testedStoichiometric equations can be used to represent the growth of microorganisms provided a 'molecular formula' for the cells is available. The molecular formula for biomass is obtained by measuring the amounts of C, N, H, O, and other elements in cells. For a particular bacterial strain, the molecular formula was determined to be C4.4H7.301.2No.86. These bacterial cells are grown under aerobic conditions with hexadecane (C16H34) as substrate. The reaction equation describing growth is: 1 C16H34 + 16.28 O2 +1.42 NH3 → 1.65 C4.4H7.301.2No.86 + 8.74 CO2+ 13.11 H20 You are in charge of a small batch fermenter for growing the bacteria you need to produce 8.2 kg of cells for inoculation of a pilot-scale reactor. a) What minimum amount of hexadecane substrate (in kg) must be contained in your culture medium? Assume 100% conversion of hexadecane to cells. b) What must be the minimum concentration of hexadecane (in kg/m3) in the medium if the fermenter working volume is 5.8 cubic meters? c) What…
- A 25.0 mL sample of a fruit juice requires 13.0 mL of 0.0100 M I2 solution for reaction. How many moles of ascorbic acid are in the sample?Cellular pH is slightly alkaline (pH 7.4), explain why a seemingly slight decrease in pH to 6.8 can have very serious consequences for the organism, becoming fatal?You resuspend 1 ml of of a purified chlorophyll sample in 10 ml of 80% acetone, and determine that the optical density of the solution (at 652 nm) is 0.88. What is the concentration of your original preparation?
- An incomplete structure of a porphyrin ring is shown below. The structure is missing three pi bonds and does not show the non-zero formal charges on two atoms. Complete the structure of the porphyrin ring with the missing pi bonds and formal charges. 0 0 +t DC 12⁰ H C N O S F P Cl Br IDescribe how the functional units for beta carotene, xanthophyll, chlorophyll A, and chlorophyll B are different. Be sure to identify the subunits that adhere to paper during chromatography.Carotene - Xanothophyll Chla –Chl, 1. Explain why chlorophyll b is at bottom and carotene is at the top of the chromatography paper? 2. What are the prouutts anu supstrate of