How many grams of helium gas are in a balloon at STP conditions if the volume of the balloon is 11.2 Liters? Your answer: O 16 grams O 2 grams O 4 grams O 8 grams

Q: Which one is a constitutional isomer of the following molecule? Br- Br Br Br

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Q: х. Choose the correct answer: 1) Hз0, 2) heat ?????? OCH3 OH OH B) A) OCH3 OH D) OCH3

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Q: Determine the oxidation numbers of each of the elements in the following reaction, and identify…

A: 1) The given reaction as follow                 2MnCO3 (s)   +   O2 (g)    →  2 MnO2 (s) +  2CO2…

Q: (A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true…

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Q: Which of the following alkenes has the smallest molar heat of hydrogenation (ie, releases the least…

A: we  have to select the alkene which has smallest molar heat of hydrogenation

Q: ow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [References] The…

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Q: 2. Calculate the amount of CO₂ emitted per kJ of heat produced of pentanol; (AH comb = -3331 kJ/mol)

A: 2) Pentanol underogo combustion reaction to form carbon dioxide and water vapour.Tge amount of heat…

Q: Why is the amount of heat absorbed by the water not equal to the amount of heat produced by the…

A: Combustion is a exothermic chemical process in which in presence of atmospheric oxygen, molecules…

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A: Breathing in hot particles and hazardous gases created by fire is how smoke inhalation. The number…

Q: 0: ОН + H—N Heat

A: We have been given acid and amine reaction, we have to find the products.

Q: 4. One day while working the in lab, I decide to warm a cup of water to make some tea. I place the…

A: Given :-  C(s) + 2H2 (g) → CH4(g) , ∆H1 = -74.87 (kJ/mol) ... (1)  C(s) + O2 (g) → CO2(g) , ∆H2 =…

Q: explain your choi 23 22 21 20 19 18 17 16 15 60 120 180 Time (s) Endothermic Exothermic b) Would the…

A: The reaction in which energy is absorbed is known as endothermic reaction. The enthalpy change for…

Q: 3. A solid chemical called Instant Ice can be purchased, which when mixed with water at room…

A: Endothermic reactions are those in which the enthalpy change, that is the difference in enthalpy…

Q: n 4.5 dl of Ethanol with a temperature of 37 ° C, add an ice cube of water. The ice cube weighs 78 g…

A: Heat energy involved in a process is given by the equation  Q = m c (T2 - T1) where, Q=heat energy ,…

Q: Why do molecules exist independently?

A: Given question is : Why do molecules exist independently = ?

Q: Where on the track does a roller coaster have the most potential energy? O 1 O 2 O 3 O 4 O 5

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Q: • Al. Al • • Al • None of the choices

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Q: Typed and correct answer with explanation please If two reactions had AG = -6.7 kJ/mole (reaction…

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Q: Q1. A. How CO, can be converted to value-added products mediated by ionic liquids such as CO,…

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Q: What's More Xeiivity 2: Positive or Negative? Direction: Study the comic strips entítled,…

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Q: Based on the reaction below, answer the following questions. 4 Fe (s) + 3 02 (e) 2 Fe2O3 (s) + heat…

A: We have to choose the options as in accordance to reaction.

Q: The enthalpy of combustion of hard coal averages -35 kJ/g, that of gasoline, 1.28 X105 kJ/gal. How…

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Q: 3. In the calorimeter which component do you think is gaining heat (metal or water)? Explain how you…

A: Please find solutions of question 3 & 4.   3. In the calorimeter which component do you think is…

Q: 11. The density of magnesium metal is 1.74 g/cc. What is the mass of 85.1 cc of magnesium?

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Q: 3. Entropy changes, unlike enthalpy changes, cannot be measured using a calorimeter.…

A: The statements given are, Entropy changes, unlike enthalpy changes, cannot be measured using a…

Q: 5. If you hold snow, the snow begins to melt and your hand feel cold. This is because melting snow…

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Q: C Macmillan Learn The table lists the specific heat values for brick, ethanol, and wood. Specific…

A: Heat is calculated by using the formula q=ms∆T q=heat m=mass of substance s=specific heat of that…

Q: 26,Sg iron l090 mitial 22.4mL woler 20.2'C cen sity watler 100g/m L pacily capmetly water: 4.184…

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Q: OH но OH HN E

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Q: ee ELOH fuerfuryl acetate (FAC).

A: The electron pushing arrows are useful to understand the movement of  electrons from one atom/group…

Q: Sound require a medium in order to transfer energy. does does not

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Q: extrapolation of a curve. 2. A student determined the calorimeter constant of the calorimeter, using…

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Q: Plastic and glass rods that have been charged by rubbing with wool and silk, respectively, hang by…

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Q: 'OH H₂SO

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Q: Be sure to show all work and circle the correct answer! 1. One can often estimate the density of…

A: Water(H2O) has 1 O and 2 H atoms. Since the volume of the 2 H atoms is neglected, we have to…

Q: W Which of the following is most directly responsible for water having a high heat capacity? O lonic…

A: The high heat capacity of water is primarily due to hydrogen bonding. Hydrogen bonding is a type of…

Q: 2. What type of reaction would have a positive AT value? Explain.

A: Positive ∆T (Change in temperature) indicates that the temperature of a system is increasing due to…

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Q: HNO3 H,SO,

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Q: The addition of 1.170 g of zinc metal to 0.03580 mol HCl in a total of 0.10O L in a coffee-cup…

A: The given reaction is : The mass of zinc metal = 1.170 g Number of moles of HCl = 0.03580 mol The…

Types of Polymers on the basis of Method of Preparation