What is the total number of valence electrons in CO 2?     14     16     19     20     24

Q: Compared with 31P, the radioactive isotope 32P has(A) a different atomic number.(B) one more…

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Q: Fill in the blanks ______ sigma bonds and ______ pi bonds are in CO2 molecule Blank A: 5,2,1,3,0,6,4…

A: INTRODUCTION Carbondioxide This is an acidic colorless gas with a density greater than air.

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: An ion has 15 protons, 16 neutrons, and 18 electrons. The symbol for the ion is 31P3+. 31P3-.…

A: An atomic number of an element is identified by the number of protons present in its atoms. The…

Q: How many valence electrons are in Oxygen

A: Valency is defined as the combining capacity of the element. It is determined by the number of…

Q: Which sample contains the greatest Number of Molecules ? [H=1 , c=12 ,O=16]  4 gm Hydrogen  18 gm of…

A: A molecule can be defined as the group of two or more atoms. Some of the most common examples are…

Q: Alanine has pKa values of 2.4 and 9.9. Its isoelectric point, pI, is equal to____.  A. 6.15 B. 23.76…

A: Amino acids contain an alpha-carboxylic acid group and an alpha-amino group. Every amino acid has…

Q: At pH=2.2, which of the following is true СООН ÇO0 Ç00 CO0 H,N-CH H3N-CH H,N-CH H2N-CH CH2 pK, CH2…

A: The given amino acid is glutamic acid. Glutamic acid is an acidic or negatively charged amino acid.…

Q: How many valence electrons does calcium (Ca) have? * O 20 4. 2. This is a required question Most of…

A: How many valence electrons does calcium have? Answer ) two .

Q: Which of these atoms has an oxidation number of 2-? O Sulfur O Chlorine O Aluminum O Neon O Silicon…

A: Oxidation State/number And Valency Valency is defined as the number of electrons present in…

Q: For 42He*2 The atomic number is f and there are are protons. The mass number is and there are…

A: The atomic number means number of proton in the nucleus while mass number is total number of proton…

Q: Carbon 14 is an isotope of Carbon-12. What makes Carbon 14 an isotope?

A: Isotopes refer to the atoms of the same chemical element that possess a different number of neutrons…

Q: What is the name of this graph? 100 10 1.0 0.1 60 64 68 72 74 78 Temperature (C) D value (seconds)

A: In pharmaceutical and food industries a unit is defined as sterile, on the statistical basis of…

Q: An isotope of sodium (Na) has a mass number of 22 and an atomic number of 11.how many neutrons does…

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Q: Methane CH4 + 202 → CO2 + 2H2O Propane C3H3 + 502 – 3CO2 + 4H2O Decane C10 H22 + 15.502 10CO2 +…

A: The complete combustion of hydrocarbons produce Carbon Dioxide and water where in absence of proper…

Q: What happens to a molecule that is reduced during a chemical rxn?   a) gains an oxygen b) becomes…

A: During a chemical reaction, the reactant molecules undergo changes in their external electronic…

Q: Give the number of valance and core electrons for each. Valence electrons are from the group number.…

A: Valence electrons  are the one that occupies  the outermost shell or highest energy level of an atom…

Q: The atomic number on the periodic table tells us how many are in the atom. * O protons O neutrons O…

A: All biomolecules are made us of the basic chemical elements that why Biology and chemistry go hand…

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: Carbon (C) has approximately the same electronegativity as hydrogen (H). Which of he following is a…

A: Methane was discovered and isolated during 1776 by a scientist named Alessandro Volta during his…

Q: 1.23 g sample of acetic acid (HC2H3O2) was burned in excess oxygen in a bomb calorimeter. The…

A: Initial Temperature= 23.77 degree celsius Final Temperature= 27.95 degree celsius Weight of sample=…

Q: ) Complete the following information about charge & are located charge & are located charge & are…

A: Electrons have a charge of -1 and are situated on the atom's perimeter. They are a fraction of the…

Q: elow is a diagram illustrating electron shells around a chloride ion. Keeping in mind that chloride…

A: Chlorine is a chemical element with atomic number 17 and the symbol is Cl. It is the second lightest…

Q: At pH=2.2, which of the following is true COOH COO- Ç00 ÇO0* H3N-CH H,N-CH H&N-CH H2N-CH CH2 CH2 pK,…

A: The given amino acid is glutamic acid. Glutamic acid contains three ionizable groups in the form of…

Q: What is the charge of an electron? no charge O positive neutral negative

A: Electron are subatomic particle carries negative charge and proton carries positive charge while…

Q: Which of the following equations is correct?   options:   FAD+ + 2 electrons à FADH2   FAD + 2…

A: Answer -- FAD + 2 electrons + 2 protons à FADH2

Q: How many grams of CH3OH can be made from 10.0 g of CO if it all reacts?

A: Methanol (CH3OHCHX3OH) is made by reacting carbon monoxide (CO) and hydrogen (H2) at high pressure:…

Q: A sodium atom has 11 protons and 12 neutrons. What is the atomic number of sodium? Multiple Choice…

A: Atomic number is the proton number of a chemical element. It is represented by "Z".

Q: what is the number of molecules in 1.00 mole of CO2 molecules?  a) 6.022 x 10-23 b) 6.02 x 1023…

A: The mole is the unit of measurement for amount of substance in International System of Units (SI).

Q: What frequency of EM radiation is emitted when an electron in a hydrogen atom jumps from n = 3 to n…

A: Frequency = 4.57 * 10^14 S-1.

Q: Sodium (Na) atoms often lose the single electron that is in their outermost shell. How does losing…

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Q: The diagram below shows the bonds within and between three molecules. Of the labeled bonds, which…

A: 2 and 4 are the hydrogen bond . hydrogen bond is a primarily electrostatic force of attraction…

Q: Carbon has several isotopes including 12C and 14C. These isotopes differ in the number of: O a.…

A: When two or more atoms of same element have the same atomic number (number of protons or number of…

Q: Which of the numbered arrows in the figure points toward a "high-energy" phosphoanhydride bond? NH2…

A: The compound given is Ribo adenosine triphosphate. The energy and unstability of a bond increases…

Q: Put approx. 10 mL of vinegar (HC2H3O2) in a short glass bottle and add 1 piece of rust-free small…

A: Result: Iron(III) acetate Fe-(CH2COOH) will form. Observation: There will be a brown color coating…

Q: An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have?a. 11b. 12c. 22d.…

A: Isotopes are members of a family of an element that all have the same number of protons but…

Q: How many electrons are present in a Phosphorus 2+ atom? Group of answer choices 12 13 19 34

A: Atomic mass: the mass of an atom of an element. It is the approximate equivalent to the number of…

Q: The molecules for fossil fuels like gasoline, diesel, and natural gas are made only of carbon and…

A: A term different than that of the IUPAC name that is commonly used in trade, rules, and codes to…

Q: why is water considered a polar molecule? 1.the oxygen is found between the two hydrogens 2.its…

A: Water is the main component of earth and all living organisms in the planet. It is transparent,…

Q: If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1 liter of water…

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Q: vel 1) O bonds in carbon dioxide molecul 2 bonds in glucose molecules atoms of oxygen

A: Cellular respiration is the mechanism by which organisms mix oxygen with food molecules, diverting…

Q: Which statement about carbon is true? Group of answer choices Carbon has 4 valence electrons. Carbon…

A: Carbon is unique element because it is able to form covalent bonds with up to 4 items at one time.

Q: Which of the following contain copper atoms (Cu2*) Select one: O a. Complex II O b. Complex III…

A: There are four enzyme complexes of ETC present in the inner mitochondrial membrane. Complex 1-…

Q: A molecule of water is formed when one atom of oxygen is covalently bonded with two atoms of…

A: Covalent bonds are formed by sharing of electrons. In the water molecule, there are two covalent…

Q: At room temperature, all of the elements in group 18 (the noble gases) Are very reactive. Are not…

A: In the periodic table, group 18 is occupied by the noble gases. These are six in number and are…

Q: The electrons are unequally shared in and transferred in Multiple Choice Na CI", H20 CH4. N2 02 CH4…

A: The sharing of electrons between atoms of same or different element or transfer of electrons from…

Q: What is formed when an atom loses or gains an electron? O a. ion O b. bond O C. molecule O d. a new…

A: Molecules of every substances are made up of small particles. These are called atoms. Bohr's model…

Q: How many carbon (C) atoms are in C6 H14 N4 02? A. 4 B. 6 C. 14 D. 2

A: Since we know that carbon atoms tend to make four bonds, each carbon atom will have the number of…

Q: the oxidation state of the metal centres in the [Pt(SCN)2)(NH3)2]3×[Fe(C2O4)3]2 complex

A: The correct answer is option d.

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…