A sodium atom has 11 protons and 12 neutrons. What is the atomic number of sodium? Multiple Choice A. 34 B. 12 C. 23 D. 11

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

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Q: The atomic number of an atom is determined by the number of in the atom. (a) protons (b) neutrons…

A: The fundamental building blocks of matter are known as atoms. They are composed of neutrally-charged…

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: A student mixed ethanol and a mystery substance in a test tube. They shook the mixture and then…

A: Biomolecules are the biological molecules that are present inside the living organisms. These…

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: Which would make up a 1:1000 dilution? O 1 ml of sample to 999 ml of solution 1 ml of sample to 1000…

A: Dilution is a method to find the observable count during the microbiology experiment. Because it…

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: When reacted, how does the use of potassium (K+) vs sodium (Na+) change the soap product?

A: Saponification is a biochemical process which deals with the conversion of  oil, lipid, and fats…

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: Identify as many materials as you can in the dust. If you cannot identify a particular material,…

A: Dust is made up of fine particles of solid matter. It consists of particles from the atomosphere…

Q: The atomic number of potassium (K) is 19 and the mass number is 39. How many neutrons does potassium…

A: Atomic number is defined as the number of protons in the nucleus of an atom . Mass number is defined…

Q: If you added one more proton to an atom of iron, then what element would it become?   A. Cobalt   B.…

A: Proton carries a positive electrical charge and they alone determine the nucleus charge.Hence adding…

Q: Radioactivity is a phenomenon of the spontaneous emission of: A. protons (alpha particles)…

A: Radioactivity is the physical process of spontaneous atomic nucleic transformations. Mother, or…

Q: Choose the combination of answers that most accurately completes the statement.Ionizing radiation…

A: Radiation can be broken into two broad categories: Non-ionizing, which possesses sufficient energy…

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: The mass number of an atom depends primarily on the number of protons and neutrons. positrons.…

A: An atom is the smallest unit of any matter. It has three subatomic particles; neutrons, protons, and…

Q: If glass is so dangerous, why is it used in the lab?

A: Most injuries in a laboratory caused by the broken glass. This kind of injuries should be avoided in…

Q: Select the best answer or answers from the choices given: The mass number of an atom is (a) equal to…

A: The mass number of an atom is:

Q: 1.0 0 0.5 0 5 Ligand A Ligand B 10 15 20 25 Ligand Ligand D 40 45 50 55 60 30 35 [Ligand] (MM)

A: Kd is dissociation constant which is ligand concentration at half of saturation or at 0.5 theta…

Q: A free radiacal is  a) Any charged particel  b) An atom or molecule with unpaired electron in the…

A: Ans- b) An atom or molecule with an unpaired electron in the outer shell The free radical define as…

Q: If we removed a neutron from an atom, what would happen to the atom? Group of answer choices: a) its…

A: Atoms are the smallest unit of any matter in the universe. The electron revolves around the atoms in…

Q: The name given to the atomic particle found outside the nucleus of an atom isa. proton.b. neutron.c.…

A: The smallest particle of matter is called an atom. It is the very basic structural unit of any…

Q: mass mass mass mass 100 100 100 100 10 10 10 10 0.1 0.1 0.1 0.1 0.01 0.01 01 1 10 100 1000 0.01 0.01…

A: Log to log graph is two dimensional graph of numerical data which uses logarithm scale on both…

Q: "If a DNA molecule has 12% thymine, how much guanine will it have?" 12% 24% 38% 76%

A: Chargaff rule: According to this rule in a DNA molecule, the base pairing is complementary and it…

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: which liquid is most like water and would support human life?

A: Water is the necessity of all living beings as it is free flowing and provides life to all living…

Q: What atom has only one proton?a. hydrogen   d. a free radicalb. an isotope  e. a radioisotopec.…

A: Proton is the positivity charged particle found in the nucleus of atom,it is small in structure with…

Q: Compound X has the above properties. Compound X is   a. C2H5OH b. C2H5Cl c. C2H5COOCH3 d. C2H6

A: Asked : Correct option which is compound X

Q: Compare and contrast an acid from a base.

A: Acid and base both are chemical compounds that react to form water and salt by the neutralization…

Q: Select the correct answer. Electrons, protons, and neutrons are three subatomic particles of an…

A: Step 1 The organization is a systematic arrangement of smaller and simpler components into larger…

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: A covalent bond consists of a pair of shared electrons between two atoms. How does this shared pair…

A: Covalent bonds are formed by the mutual sharing of the electrons between two atoms having…

Q: 33 of 48 A radioisotope is all the following except an isotope with different number of neutrons…

A: Radioisotopes can be defined as atoms that contain an unstable combination of neutrons and protons…

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: Include the number of the blank in your answer.For example, Blank#1 = 15. Substance c (cal/goC) c…

A: 1 Calorie = 4184 Joule

Q: Nonsilicates are a group of minerals that DO NOT contain what two elements? A. silver and gold B.…

A: Answer-B. Silicon and oxygen

Q: Which type of model is described below? A scientist thinks of the inside of a tree as being like a…

A: Plants use xylem to transport water from the soil to the leaf of the plants. Plants absorb the water…

Q: 44.All atoms of a given element have the same ________. Group of answer choices a.mass number…

A: An element is a basic material in the formation of all the living, nonliving, and chemical matter…

Q: Consider an electron transition from n = 3 to the n = 2 energy level in a hydrogen atom resulting in…

A: The electrons of hydrogen atoms revolve around their nucleus. They occur as a set of electrons with…

Q: What is the name of a representation of the physical world? Answer please A. Alloy B. Compound C.…

A: Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms.

Q: hat do you call the smallest unit of particle in the universe?

A: According to the question the answer is: C) Nucleus  Nucleus are very small and are densely packed.…

Q: Ammonia gas would be classified as (1) a compound (2) a mixture (3) an element (4) an atom

A: AMMONIA GAS IS CLASSIFIED AS COMPOUND.

Q: If a model of a hydrogen atom had a diameter of 45 cm, what would have to be the diameter of the…

A: Introduction - Hydrogen atom or its model is made up of a centrally placed nucleus or in this case…

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 monomers of protein differ from each other

A: Proteins are biomolecules and the body’s building blocks. They play significant roles in body…

Q: Draw and label a simplified model of an atom. Explain how this model misrepresents our understanding…

A: An atom is the smallest component of an element present everywhere in the universe. It is made up of…

Q: Which element is a metal? A. C B. Rn C. CI D. Cr

A: The classification of chemicals into different groups and understanding their properties individual…

Q: Knowing the atomic mass of an element allows inferences about which of the following?

A: Atom is the smallest or basic unit of matter and was discovered by sir John Dalton in 1808  Charge…

Q: 3. High energy radiation ejects the electrons in an atom causing free radicals. Which are examples…

A: High energy radiations are part of the spectrum with high frequency, low wavelength and high energy.…