Q6. Perform this addition to the correct number of significant Q figures: 8.32 + 12.148 +0.02 (a) 20.488 (b) 20.49 (c) 20.5 (d) 21 07 Rorform thi nel

Q: (Q13) Select of all the following that reflect the standard state of the element: lodine: I2 (g)…

A: The standard state of any element forms at 1 atm pressure and room temperature or at STP.

Q: Which of these has the correct sign for ASsys? O 2 H2S(g) + 3 O2(g) 2 H20(g) + 2 SO2{g); delta S is…

A: To predict the correct option.

Q: A certain oil used in industrial transformers has a density of 1.280 g/mL and a specific heat of…

A:

Q: CH4 (g) + 2 O2 (g) → CO₂ (g) + H₂O (1) AH = -890 KJ The heat liberated when 3 moles of methane (CH4)…

A: In the following reaction, what is the quantity of heat (in kJ) released when 3 moles of CH4 are…

Q: 2.37. True or false: Any process for which AH is negative is exothermic. Explain your answer.

A: Enthalpy change (∆H) of a reaction is given by the formula  ∆H = [enthalpies of products] -…

Q: Given the returns and probabilities for the three possible states listed below, calculate the…

A: The expected value of stock A is 9.05% which is equivalent to E(A) = 0.0905 and the expected value…

Q: (1) C(s) + O2(g) → CO2(9) AH = -393.51 kJ mol1 (2) S(s) + O2(g) → SO2(g) A:H = -296.83 kJ mol1 (3)…

A:

Q: If a system is given 60 J of heat and lifts the lid of the container 3 m with a force of 5 N, what…

A: The work done by a force can be calculated using the formula:Work = Force × Distance

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A:

Q: Experimental Enthalpy of Formation of Magnesium Oxide by Summation

A:

Q: The AE of a system that absorbs 15.4 J of heat and does 6.5 J of work on the surroundings is J. A)…

A:

Q: Estimate the thermal properties of a food with the following composition: carbohydrate 0.3%, protein…

A: Note: Since we are entitled to answer only three sub-parts, we’ll answer the first three as no…

Q: Calculate the amount of energy in kilojoules needed to change 243 g of water ice at –10 °C to steam…

A:

Q: When the system is exothermic , the system is gaining/ losing (choose one) heat and triangle H is…

A: If a system is exothermic the heat will be released from the system . And we can say system is…

Q: 1. N2(g) + 2 O2(g) = 2 NO2(g) : Enthalpy change=66.4 kj 2. 2 N2O(g) = 2 N2(g) + O2(g) : Enthalpy…

A: The objective of the question is to calculate the enthalpy change for the reaction 2 N2O(g) + 3…

Q: O States of Matter Interpreting a heating curve 0/5 E A pure sample of Substance S is put into an…

A: Answer  Cp(s) of substance Y is higher than Substance SExplanation:Step 1: Step 2: Step 3: Step 4:

Q: Use data from CRC Std Thermodyn Substances and thermo data jons to calculate A and AS for vaporizing…

A: The chemical reaction reaction which represents the vaporization of ethanol (C2H5OH) is given by…

Q: JII 21 UI 23 A silver cube with an edge length of 2.34 cm and a gold Substance Specific heat…

A: Given : edge length of gold cube = 2.68 cm Edge length of silver cube = 2.34 cm Volume of water =…

Q: Calculate the amount of heat, in kJ, needed to raise the temperature of 87.1 g of benzene from 285.0…

A: specific heat capacity is defined as heat required to raise the 1 kilogram body temperature by 1…

Q: Which of the following statement is correct? Select all the correct statements, wrong choices will…

A: Thermodynamics :  it is the branch of science where the relationship between heat , energy , work…

Q: Suppose that to a mug containing 125 mL of water at a temperature of 90°C we are 165 mL of water at…

A: Given: V1 = 125 mL T1 = 90°C = (90 + 273) Kelvin = 363 K V2 = 165 mL unknown temperature, T2 = ?…

Q: Given the following thermochemical equations with hypothetical AH values: 2NH3 (g) + 3N2O (g) → 4N2…

A:

Q: The heating or cooling of a substance is given by the equation: q = m Csp A T Where: q = energy…

A: Given equation: q = mCsp∆T where: q = energy transferred as heat m = mass Csp = specific heat ∆T =…

Q: The following information is given for silver at 1 atm: Th=2212.00˚C Tm=961.00°C Specific heat solid…

A:

Q: Which of these has the correct sign for ASsys? O HCI(g) + NH3(g) NHẠCI(s); delta S is positive O…

A: Entropy (S) can be defined as the measure or degree of randomness. Generally, the gas molecules are…

Q: So, when there is no value given for a substance O2, you are to assume that it is zero?

A: ∆Hfo of O2=0∆Hfo of formation of O2=0

Q: 6. How many calories of heat are needed to change 55.00g of nickel at 1250.0°C to 1750.0°C? (C…

A:

Q: e Joule e Energy is absorbed e Energy can change forces from one type to another e freezing e…

A: Thermodynamics is a branch of science which deals with the concept of heat and temperature and also…

Q: The oil in an automobile is used to lubricate internal engine parts and keep these parts clean. Oil…

A: The expression to calculated the temperature difference in oC from oF is shown below. ToC=59ToF-32…

Q: When 100 cal (418 J) of heat is applied to a 125 g sample, the temperature increases by 28 oC.…

A: The question is based on the concept of specific heat capacity.   amount of heat required to raise…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.