reactions change old substances into new substances. chemical O physical
Q: Derive seckure tetrode equation
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Q: Calculate (to the nearest 0.1 u) the formula mass of these compounds. a. Magnesium Fluoride MgF2 b.…
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Q: An exothermic reaction absorbs energy, so the products have more potential energy than the…
A: In an exothermic reaction, the products have less potential energy than the reactants. This…
Q: Balance the chemical reaction: C&H10(s) + O2(g) → CO2 + H₂O - 17 What are the coefficients for the…
A: Let the balanced equation be aC4H10+bO2→cCO2+dH2O
Q: 3. Which of the following is a fusion reaction. Na +a → "Mg +H "N+a → "0+ H Ra → Rn +a+y d. H+"C→ "N…
A: During a nuclear fusion reaction, two or more light nuclei fuse with each other to form a heavier…
Q: What are the similarities and differences between the everyday and technical meanings and uses of…
A: The term "element" has different meanings and uses in everyday language as well as in technical…
Q: What is compound
A: A chemical compound is a chemical substance composed of many identical molecules composed of atoms…
Q: Bonds What kind of chemical bond is formed when electrons are transferred from atom to atom (when…
A: When electrons are transferred from one atom to another then the atom which loses the electrons gets…
Q: Activated complex 200 150 Reactants Potential Energy 100 Products 50- Reaction Pathway and the…
A: The heat of the reaction ∆H is equal to the difference of the potential energy of products and the…
Q: Which substance is an element? O 1. CH4 O 2. NaCl O 3. N2 O 4. NO2
A: N2 is an element. N2 is the nitrogen atom or element.
Q: The figure below shows some of the ions used in calculating the Madelung constant for NaCl. The…
A: Given: - Structure of NaCl crystal . with Na by small circles and Cl by big circles.
Q: Based on their locations on the periodic table, which two elements would you expect to form positive…
A: Boron and aluminum are the two elements which form ions of +3 charge.
Q: Which element would have properties most like magnesium (Mg)? A. P B. Sr C. Na D. Mo
A: B. Sr Is the correct answer
Q: The compound as shown in the image below is O
A: The following question refers to the chemical compund given as showm in the image,
Q: Discuss Exothermic and endothermic reactions
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Q: 55480/play 6/15 Question Chemistry Reactions Revision What does the diagram represent? 908 1 A…
A: Step 1: By looking at the image we can say that two types of molecules are present. Step 2:…
Q: what are some selection rules in atomic physics explain using appropriate graphs
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Q: Equations How many nitrogen atoms are on each side of this equation: 3Mg + N2 M93N2 O One O Two O…
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Q: is yaclioacive . Deiermine emiller wheitrer it is an d-emiller or a B- .
A: Given: Z = 72 A = 170
Q: Bonds One atom of sodium would most likely form an ionic bond with one atom of: O Sodium can not…
A: In the given figure ,Electronic valency of all elements are given, Hydrogen(H) have valency 1.…
Q: Which of the following elements is balanced and what is the type of balance ? 38 s 218 35 ms 164.3…
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Q: reactions chanqe old substances into new substanc chemical physical
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Q: the chemcical equation of a firework
A: The most important component of a firework the gunpowder. The combination of sulfur, charcoal and…
Q: 4. Most metals are NOT * O Ductile. O Malleable. O Liquid at room temperature. O Good conductors of…
A: The material that conducts heat and electricity are known as metals. The materials that do not…
Q: How many moles of O₂ react with or are produced by 5.67 moles of the first reactant shown in each…
A: There are different questions and each question has its subparts. So, according to bartleby's…
Q: ŞLi +?→Be + dn }CI + ?-s + 3He Be + He →3He + ? Br + }H -→? + 2 3n
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Q: Solid State: show that the cell võlume of a 3 mm network (triclinic) with a#b# c L # B+8 is obtained…
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Q: Enhancer 2 The time taken for a first order reaction is to reduce the initial concentration by a…
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Q: Where is a transistor most likely to be found ? A) Wrist watch B) Fuse C) Hearing aid D) Fluorescent…
A: A transistor is a type of semiconductor device that can be used to both conduct and insulate…
Q: Complete the following reaction 81Rb + n 81Sr Р + Ve 81Br 81Kr e 81y
A: A beta particle is an electron or a positron. Beta decay is a type of radioactive decay that takes…
Q: Briefly explain how a Transistor can be used as a Switch and as an Amplifier?
A: Given:- This transistor consists of three modes. They are: 1. Saturation region. 2.…
Q: Each valence electron in a doped semiconductor forms a ...... Please choose one: a. Recombination b.…
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Q: How does our body react to hot or cold substances? Explain
A: We need to explain how our body react to hot or cold substances. Let's understand each one by one…
Q: The equilibrium-constant expression depends on t of the reaction. O a. temperature O b.…
A: Equilibrium constant is the value of the reaction quotient of the chemical reaction at the…
Q: Determine the percentage by mass of each element in the following compounds. place.) (a) ammonia,…
A: (a) In the compound NH3 There is 1 N atom and 3 H atom Mass of N = 14 u Mass of H = 1 u Mass of the…
Q: 13. Complete the following equations: 239 93 Np → Pu + 239 94 32 P → 15 + e+ P
A: 239Np 93 → 239Pu94 + 0e-1 + V-where , = 0e-1
Q: 06- According to the below reaction , determine the Q-value of reaction and showing type of…
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Q: An exothermic reaction involves an increase in entropy. True False
A: The reaction in which energy is released in form of heat or light is called exothermic reaction. In…
Q: Label parts of an equation Fe + 2HCI FeCl, +
A: The given equation is a chemical reaction. In a chemical reaction, substances (the reactants) change…
Q: silver sulfur Ag S. S. (S) How many of cach atom are in the reactants? Ag slver S sufur Balanced…
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Q: When the combination of two drugs results in an acute effect that is equivalent to thesum of the…
A: Synergism comes from the Greek word "synergos" meaning working together. In toxicology, synergism…
Q: Atoms become stable when their outer shell is and has valence electrons.
A: Atoms become stable when their outer shell is full and has 8 valence electrons.
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