Determine the balanced reaction of element A (white circles) with element B (gray circles) as represented below? A2 + B2 → AB3 O A2 + 3B2 → 2AB3 A+ 3B → 2AB O A+B → AB

Q: Which is a halogen?

A: The element  belonging to group 17 in the periodic table are called  as halogens.   They are…

Q: Explain how it is possible for one element to have a higher atomic number than another and yet have…

A: Atomic mass of any element is actually its average atomic mass which is calculated by the addition…

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Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

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Q: 6. A solid circular cone made of pure platinum (d = 21.45 g/cm³) has a diameter of 2.75 cm and a…

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Q: is not used to make Portland Cement a Calcareous Rocks b. Argillaceous Rocks c. Siliceous d. Sands…

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Q: Define the term Neutron-to-Proton Ratio?

A: To find: The Definition of Neutron-to-proton ratio

Q: Identify an element that would have similar properties as magnesium (Mg). Explain your choice and…

A: The element that has the similar properties like magnesium is -

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A: To specify the number of protons and electrons we will use the following concept . Since we know…

Q: Describe the formation of heavier elements during stars' formation and evolutions; Give at least 10…

A: Introduction :  An element is a group of atoms which have same number of protons, in pure form they…

Q: .85 If one gallon of gasoline contains about 2.0 g of lead, how much lead (in kg) is emitted into…

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Q: halogens TAL LE IA 12A Be Na Mg Kla Rb Sr |S Ba Fr Ra -| :0 KCI Br At

A: Chemical reactions occur when there is any chemical change. They are written in the form of chemical…

Q: what mass of sodium is also produced?

A: Given :- 2Na3N → N2 + 6Na  Mass of N2 produced = 29.7 g  To calculate :-   Mass of sodium (in g)

Q: The atomic structure of four particles are shown. electrons protons neutrons 18 17 18 Q 18 17 20 17…

A: Isoelectronic species can be defined as the species which have same number of electrons in an atom.

Q: Classify each of the following fifth-row elements as a metal, a metalloid, or a nonmetal: (a) Y (b)…

A: The metals are elements that are aligned left side of the periodic table and have a tendency to lose…

Q: Y What element is represented in question 33? O Sodium O Boron O Carbon O Sulfur

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Q: Consider the following data for the hypothetical element Smileonium, So. What is the average atomic…

A: Given data for the hypothetical element Smileonium: We have to calculate the average atomic mass of…

Q: Determine the balanced reaction of element A (white circles) with element E (gray circles) as…

A: According to the question, wight circles represent element A, gray circles represent element B. From…

Q: DO NOW: Describe the process happening in this image in as much detail as possible (complete…

A: The given nuclear reaction is,   86222Ra  ----------> 84218Po +       24He    • However,  Ra is…

Q: How many core electrons does nickel contain? O 26 O 18 O 2

A: How many core electron in Nickel ?

Q: Carbon, nitrogen, and oxygen have atomic numbers of 6, 7, and 8.  How many neutrons are in their…

A: Given: The atomic numbers of carbon, nitrogen, and oxygens are 6,7, and 8. We have to find the…

Q: Which element is a halogen? (a) Ne (b) O (c) Ca (d) I

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Q: m b d Halogens Alkali Metals Alkali Earth Metals Noble Gases a. b. c. d. Inert. Do not react with…

A: The periodic table contains different elements arranged in the group and periods . The group one of…

Q: Which element is in Period 2 group 4A? Which element is in Period 4 group 2A

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Q: Unit 9: Compounds - PS How many atoms of aluminum (Al), sulfur (S), and oxygen (0) are in each…

A: Given compound has molecular formula , Al2(SO4)3

Q: 4.40 Two isotopes of rubidium occur naturally, Rb and Rb. Which isotope of rubidium is more…

A: Average atomic mass of Rb = 85.47 Let percentage abundance of 85Rb = x and percentage abundance of…

Q: What element is defined by the following information?    p+=20  n ^o=20   e^-= 20

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Q: 92. Substance which takes up water or moisture and liquefies/dissolve in it:   hygroscopic…

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Q: 7. In cach pair of isotopes shown, indicate which one you would expect to be radioactive and why. a)…

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Q: Describe the energy_of the electron in the diagram below. Figure 1 e n=65 4 3 2 O energy is moving…

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Q: A general formula of nucleus is given as AZX2+; here A is mass number, and Z is atomic number.…

A: The protons and neutrons in the nucleus of an atom are called as nucleons. Protons are positively…

Q: How are elements heavier than helium formed in the stars, particularly until iron?  How are elements…

A: The chemical element helium has the atomic number 2 and the letter He in its name. It is the first…

Q: 7. During reactions, the element Na gives up one of its electrons to become the cation, Na+. Which…

A: Given,  Na+

Q: 79) 79.) In each of the following groups,which element is leost reuctive? Group ! a. b.Group 7 C.…

A: The most fundamental classification of the chemical elements is into metals and non-metals. Metals…

Q: A fictitious element X has a molecular weight of 9.46 g/mol. If the volume occupied by one atom of…

A: We have given that the a fictitious element X has a molecular weight of 9.46 g/mole and the volume…

Q: What is the differences between an Oxygen atom (16 amu, atomic number = 8) and a Calcium atom (46…

A: Oxygen atom = 16amu Calcium atom = 40amu  Metal- it have tendency to lose electron. Non metal - it…

Q: Describe an alpha particle. What nucleus is it equivalent to? •    Describe a beta particle. What…

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Q: Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of…

A: When coal burn there is a chemical reaction takes place. It is a chemical reaction. It's best…

Q: What is X? 1 poim 235 U + 1n n > 137 Te + X + 2 'n O 96-Rb 92-Kr 90-Sr O 97-Zr

A: Given 1) We know about the IUPAC naming of alkene and alkyne and selection of parent chain 2) we…

Q: A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater…

A: Phosphorous is a 15 group element. The atomic number of phosphorous (P) is 15 and its atomic mass is…

Q: 7. A 25.75 g sample of a nitrogen oxide was found to contain 6.68 g nitrogen and the rest oxygen.…

A: Problem 7 % Weight of an element in a compound = 100 x Weight of element/Weight of compound Weight…

Q: 8.How many protons, neutrons and electrons are present in" Sn 119 2+

A: In an element, atomic number of element is equal to number of protons.  While in neutral element…

Q: Determine the number of protons and the number of neutrons in isotope. 33P15

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Q: Boron consists mainly of 19.9% boron-10 and 80.1% boron-11. What is the average atomic mass (amu) of…

A: The average Atomic Mass of Boron is given by -

Q: Find the number of electrons and neutrons in the following: 207Pb+2 Electrons Neutrons

A: Nucleus is consisting of protons and neutrons. Number of neutrons = Atomic mass - number of protons

Q: Based from the nitrogen test experiment, what is the test for nitrogen?

A: Analytical chemistry is branch of chemistry in which we deal with detection of element in organic…

Q: The atomic number indicates the total number of neutrons and protons in a nucleus the number of…

A: #1) For an neutral atom        Atomic No. = No. Of protons OR No. Of electrons         mass no. =…

Q: In the equation used to determine the energy of the particles described in question (11), E = hc/λ,…

A: The given equation is  E = hc/λ

Q: halogen noble gas

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Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.