What happens to the mass of a marshmallow when you squeeze it?   a. Remains constant     b. Increases     c. Decreases

Q: a. K2Cr207 / Aq. H2SO4 /heat b. HNO3 / H2SO4 c. Br2 / FeBr3 d. NaOH, then H2O2 e. Sn / HCI f. NANO2…

A: In electrophilic aromatic substitution reaction, methyl group acts as ortho para directing group due…

Q: Given that H2(g)+F2(g)⟶2HF(g)       Δ?∘rxn=−546.6kJ 2H2(g)+O2(g)⟶2H2O(l)  Δ?∘rxn=−571.6 kJ…

A: Some Basic Rule (1) If we multiply the any number in reaction then in the enthalpy ,that number is…

Q: different chemicals store different amounts of energy in their what??

A: The correct answer is BONDS or CHEMICAL BONDS . The energy ( chemical energy or sometimes called…

Q: C. What is the overall temperature change? i °C

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Q: 1. What would happen to an objects potential energy as it begins moving? Potential energy would…

A: What is Potential energy Potential energy is the energy stored in an object because of its position.…

Q: Use the Referenceste access important values if needed for this question. 80 70 60 50 > 40 30 20 10…

A: An inverse proportion graph shows that two quantities shown on graph are inversely proportional to…

Q: e new temperature of t

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Q: Calculate the number of joules in calories 258 calories =? JOULES 9740 J = ? CALORIES  PLEASE…

A: The energy is measured using units such as Calorie and Joules. The relation between Calorie and…

Q: by 21

A: In nuclear reaction,  Mass number(A) and atomic number(Z) are balanced• By Emission of Alpha…

Q: For each equation, define the indicated variables and their units Note: use C to indicate Celsius q…

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Q: 2. The Berg Temperature Scale has these peculiar temperatures as it's reference points: 70°B (the…

A: Given : 0 oC temperature on Berg scale = 70 oB And 135 oC temperature on Berg scale = 98 oB

Q: B3 Initial water temperature 21 °C B4 Final water temperature 100 °C B5 Temperature change (^ T)…

A: Given: B6 volume of water  mass of water B7 number of calories needed to boil water = ?

Q: in step 4 and step 5 why divide by 4 and 16?

A: Step 4 The initial concentration of NO2 is, The concentration of NO2 after 24 seconds is…

Q: If the mass of the hot water is -67.46 and initial temperature of hot water is 51.0 and mass of cold…

A: First, the amount of heat absorbed by the cold water is determined.

Q: Find the kinetic energy of the ball.

A: Given :- mass of ball (m) = 23.44 kg                speed of ball (v) = 2.55 m/s  To calculate :-…

Q: Question 56 An example of kinetic energy is  Group of answer choices natural gas. chemical energy.…

A: Potential Energy:-  It is basically the energy held by an object by virtue of its position.  Kinetic…

Q: must justify your choice with a calculation.

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Q: Give three (3) examples for each Independent and Dependent Variable.

A: A variable can be defined as anything whose value varies. There are two types of variables:…

Q: List some examples of kinetic energy.

A: Kinetic energy could be defined as the energy that is found in objects that are moving. The energy…

Q: [Review Topics] [Reférences] Use the References to access important values if needed for this…

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Q: Hi im still confused how you get the values from the grap

A: As per the given values of K and T, lnK is computed and then a graph is plotted between lnK vs 1/T

Q: If the temperature gradually increased, does that mean that it rose slowly? Explain your answer.

A: Statement is that if temperature gradually increased, what does it mean

Q: Refer to the two beakers for question 7. 27°C 45°C The beakers both contain 125 mL of the same…

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Q: 1. 2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g) Δ?1=−699.0 kJΔH1=−699.0 kJ 2.…

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Q: the new temperature of th

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Q: Find the temperature of the coffee after the ice melts.

A: Mass of ice cube = 8.5 g Mass of coffee = 130 g Enthalpy of fusion = 6 kj/mol  Molar mass of water =…

Q: Temperature change of A = i x (temperature change of B)

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Q: s new volume?

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

Q: What are the important cycles of matter?

A: The elements of periodic table are found in different states of matter on earth.  The important…

Q: That volume

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

Q: 18.7 grams of ethanol are heated from 18.2°C to 112.1°C how many joules of energy were required?

A: Given that,  Weight of ethanol m = 18.7 g Initial temperature of ethanol T1 = 18.2°C Final…

Q: A sample of iron was heated to99.5°C, then placed into75.0g of water at19.5°C. The temperature of…

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Q: e new temperature of th

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Q: Calculate the maximum safe operating temperature the engineer should recommend for this reaction.…

A: Dinitrogen difluoride gas = N2F2 Mass of N2F2 = 0.107 Kg or 107 gm

Q: Once he executes the daring jump out of the plane the skydivers energy is converted to what type of…

A: When we have velocity then the kinetic energy is considered.

Q: 0.4994 g sample of a hydrate of CuS04 xH20, is heated to a constant weight of 0.3184 g(total loss of…

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Q: e change in temperature (°C)

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Q: The_needed to raise one gram of water one degree celsius is called a calorie. A. kilocalories B.…

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Q: 4) Write down the relationships your derived above as mathematical equations m = mass (g) AT =…

A: From Experiment-1, mass(m) is inversely proportional to change in temperature(∆T) when heat is…

Q: Carry out the following temperature conversions. Watch Significant figures. An over the counter pain…

A: Conversion of temperature scale....

Q: You are asked to study how much table sugar can be mixed or dissolved in water at different…

A: Dissolution can be either an exothermic process or an endothermic process. An exothermic process…

Q: Graph the information

A: The data is given as, Volume Pressure 33.41 15.40 8 64.31

Q: For this method to work the solid must (a) be more dense than the liquid, and (b) not react with nor…

A: we know density = mass volume  for metal piece, if we know the mass and volume of piece of metal…

Q: Wind power plants cannot change the and wild life. a. Water level O b. Solid waste O c. Panel d.…

A: Explained as follows

Q: Sodium acetate dissolves readily in water according to the following equation. NaC2H3O2 (s) –→…

A: For the dissolution process: Enthalpy of solution,  ΔH= -17.3kJ

Q: How do we calculate ? I just put 7 it's incorrect .

A: The reaction is called combustion reaction. In this reaction an organic molecule reacts with oxygen…

Q: what law?

A: There are few laws like charles law , Boyles law combined gas law in gas theory .