We watched 5 reactions: Thermite Hydrogen combining with oxygen to form water. Water splitting into hydrogen and oxygen. Hydrogen and oxygen combining with a catalyst Baking soda and vinegar Which of these reactions gave off energy? Group of answer choices 1 2 3 4 5

Q: Which of the following is the equation for the change in energy? W + PAV O H+ PIAV O HIAV+ P O H+…

A: Solution:

Q: According to NASA, the space shuttle's external fuel tank for the main propulsion system carries…

A: For determining the amount of limiting reactant or excess reactant, the mole ratio of reactants in a…

Q: Use the References to access important values if needed for this question. 1A 8A H 2A 3A 4A SA 6A 7A…

A: Two species are iso electronic when they have same number of electron  thus have electronic…

Q: Balance each reaction and write its reaction quotient, Qc:

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What is the atomic number for the element that is in group IIIA(13) and period 4? Atomic number =…

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Q: Matter or pure energy? soda taste soda color air humidity scent x-rays

A: The given examples can be classified as follows:

Q: The fundamental force underlying all chemical reactions is

A: Chemical reaction  are concerned with the bonding  between atoms. The bonding between atoms  is…

Q: c. FeS(s) + 2HCI(aq) → H2S(g) + FeCl2(aq) Soth (b) and (c) a. 2Sb(s) + 31g) b. 2H9O(s) → 2Hg(l) +…

A: Decomposition reaction are the reactions in which the reactant breakdown to form two or more…

Q: Consider the following balanced reaction: 2 A2 + 3 B → C2 + 2 D What is the enthalpy of reaction if…

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Q: Specify the number of protons and electrons in each of the following ions. A) Se^2−, needed for…

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

Q: How many different chemical compounds and elementary substances are represented in the image? A. O…

A: Elementary substances are made up of only one type of element. Chemical compound is a substance…

Q: Consider a green LED that draws 5 µW of power. Assuming all the power going into the LED is emitted…

A: Formula used Energy of n photon = nhc/wavlength(lambda) Where wavelength = 520nm c= 3×108 m/sec h =…

Q: When magnesium hydroxide reacts with nitric acid, it produces magnesium nitrate and water.…

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Q: 1. Using a dark sphere to represent hydrogen atoms and a light sphere to represent oxygen atoms…

A: A hydrogen atom is an atom of the chemical element hydrogen and an oxygen atom is an atom of the…

Q: Why is it important to be aware of the ingredients of the food you eat? Is fish good for your…

A: To grasp: Knowledge of foods we eat and characteristics of elements present in it

Q: A student performs a reaction and the mass of the watch glass, filter paper, and product together…

A: Mass of watch glass + filter paper + product = 130.0g Mass of watch glass = 80.0g Mass of filter…

Q: Of the five elements Sn, Si, Sb, O, Te, which has the most endothermic reaction? (E represents an…

A: When the atoms absorb energy during the reaction, the reaction is endothermic. The absorbed energy…

Q: CHE 180 General Chemistry I Homework Chapter 1, continued 10. Exercise 92: The properties of a…

A: Based on change in properties of a mixture of substances we can define it as a physical or chemical…

Q: Blank 1 are alkali and alkaline earth metals (primarily calcium, magnesium, potassium, and sodium)…

A: A question based on biological importance of chemical elements that is to be accomplished.

Q: After reading the text in What's now, Let us see how far you have learned this topiC. Activity 1.2:…

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Q: Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O…

A: The elements given are sulfur i.e. S, selenium i.e. Se, carbon i.e. C and phosphorus i.e. P.

Q: Assume that a room at sea level is filled with a gas of nitrogen molecules N2 in thermal equilibrium…

A: Given , Temperature =-10°C=(-10+273)K=263 Kh= 1.05×10-34 J.s

Q: uestion 27 D Se(s) +3 F2(g) → SeF6(g) AS' = -337 J/(mol,n· K) Substance ApproximateS (J/(mol · K))…

A: Entropy is a parameter which determines the randomness of a system. A positive entropy means the…

Q: Write the uses/ application of sb2O4( antimony tetroxide)

A: Sb2O4 known as Antimony tetroxide is an inorganic compound. The empirical formula of the compound is…

Q: QUESTION 12 When two atoms of 2H are fused to form one atom of 4He, the total energy is 3.83x1012J.…

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Q: Solar energy is: O the energy stored within the structural units of chemical substances. O the…

A: To define: Solar energy.

Q: Use this diagram to answer the following questions. 7 Model The reactants in the above reaction are…

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Q: A sample of propane gas, C3H8, was combusted to produce energy according to the equation: C3H8…

A: Given :  Molecules of CO2 produced = 1.35 x 1024  Density of water = 1 g/cm3  Also, molar mass of…

Q: Two important components in the formation of bones and teeth O Magnesium and calcium O Calcium and…

A: Vitamins are essential for life. There are various types of vitamins A, B, C, D, E and K.

Q: Use the References to access important values if needed for this question. 1A 8A H 24 3A 4A SA 6A 7A…

A: Isoelectronic species are defined as those species which contains same number of electron but having…

Q: 70. Consider the following. This process would result in the formation of: a. a positive ion and…

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Q: The unit of energy in atomic units is given by me 167'eh? (A) 1 E, 2+2 et (B) 1 E, = 167 m,eh? me…

A: Energy of an electron depends on the orbit in which it is present. It also depends on the mass.…

Q: Using the provided table and the equation below, determine the heat of formation for PbS. 2 PbS (s)…

A: Heat of reaction = Heat of reaction of products - heat of reaction of reactants

Q: The halogens are the elements of group 17 on the periodic table. Halogens combine easily with…

A: we are to discuss which type of compound is formed when halogen reacts with group 1 metals.

Q: Consider two identical metal spheres, A and B. Sphere A carries a charge of – 48 µC and sphere B…

A: As two sphere touches to each other, negative charge will be transferred from the sphere with a…

Q: 2)A gas sample in a closed, expandable container of initial volume 5.00 L was allowed to warm from…

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Q: ____________ makes up the majority of oil use, with gasoline and diesel fuel being the most common…

A: Petroleum is a naturally occurring substance which is composed mainly of aliphatic hydrocarbons.…

Q: Mass of watch glass and evaporating dish:67.511 g   Mass of watch glass, evaporating dish, and Mg…

A: We can calculate mass of Mg,Cl, product by calculating mass before and after the reaction.

Q: Given these reactions, where X represents a generic metal or metalloid 1)…

A: There are some errors in the given reactions, here the corrected reactions are,

Q: Automobile airbags inflate due to the formation of nitrogen gas from the chemical reaction 2 NaN,…

A: The given chemical reaction is represented as follows:

Q: In experiment #7, you observed the formation of carbon dioxide by reacting baking soda with vinegar.…

A: When baking soda and vinegar reacts, carbon dioxide is formed as a product.

Q: Use the References to access important values if needed for this question. 1A 8A H 2A 3A 4A SA 6A 7A…

A: Isoelectronic species are the species having same electrons. Electron of Cl- = (17+1)= 18e-…

Q: QUESTION 5 Which of the following is not a direct conversion of the Sun's energy? O radiation O…

A:

Q: The thermogram in Figure below shows the change in mass of a sample of Copper sulfate pentahydrate,…

A: When copper sulfate pentahydrate solution is heated with high temperature, then at first it looses…

Q: esSED THIS? at Section 1Pos MO Wah • Part B Cansde the evaporion of methand 50'C COR U-COH Express…

A: Concept:  For a general reaction A(l) === B(g) The equilibrium constant Kp is given by  Kp = PB And…

Q: Mass of crucible and cover   12.73g 2. Mass of crucible, cover, and sample   24.11g 3. Mass of…

A: Total mass lost by sample during heating = Mass of crucible, cover, and sample - Mass of crucible,…

Q: 20. CH4 + 2 O2 Which atom is the C bonded to in the reactants? Which atom is the C bonded to in the…

A: In a reaction generally the reactants exchange their atoms to form a new compound which is called as…

Q: Classify the substance shown in the sketch below. You can click the other tabs in the sketch to get…

A: It is given a sketch which needs to be classified based on the option that is given and all need to…

Q: Which of the following reactions represents an electron gain energy that would be positive (i.e.…

A: When we add one electron to the outermost shell of an isolated gaseous atom, the energy released in…