lf the weight of h0m0genous bar AB is 5kN, F is 45kN, and bar AB is in equilibrium. Calculate the direction (in degrees) of the reaction at point A. (Answer:16.12degrees)

Q: Is the mass of one mole of N2 greater than, less than, orequal to the mass of one mole of O2?

A: Given:Is the mass of one mole of N2 greater than, less than, or equal toThe mass of one mole of…

Q: Read and then identify the action/reaction pairs for each. 4. Two feet 5. Tractor and Elephant

A: Required :  Action reaction pair.

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A: Kindling has greater surface area per unit mass as compared to large sticks and logs. Hence, it…

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A:

Q: Can carbon dioxide be liquefied at room temperature (20ºC)? If so, how? If not, why not?

A: Introduction: Liquefaction of gases is defined as the conversion of states of gas from the liquid…

Q: Write down the Arrhenius equation. Derive an expression for temperature variations. At a temperature…

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Q: The heat of a reaction, AH, may be calculated by: * 1 p A. AH =EAH -EAH, B. AH =AH Σ ΔΗ, reac tant…

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

Q: A sample of oxygen gas has a volume of 2.50 L at STP. How many grams of O, are present?

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Q: rive the equation H= U + PV

A: Enthalpy, H  : It is a property of a thermodynamic system, which is defined as the sum of internal…

Q: erimentalist clai ts, a heat engim R, converts 16

A: GivenQ1=300 BtuT1=900 RW=160 BtuT2=540 R

Q: To eight significant figures, Avogadro's constant is 6.0221367 × 1028 mol-1. Which of the following…

A: Avogadro's constant = 6.0221367 x 1023 mol-1  To find = Correct rounding

Q: A typical timber wolf has a mass of 40 kg, a typical jackrabbit a mass of 2.5 kg. Given the scaling…

A:

Q: A 59 kg person climbs up the stairs with a height of 5.5m. Where does the energy come from to cause…

A: Energy come from to cause this increase as potential energy Potential energy increase in this case…

Q: Which is heavier 1kg of nail or 1kg of cotton? Why?

A: nail is heavier in case of presence of air, in vacuum both are same.

Q: The equilibrium constant of a reaction triples on raising the temperature from 289 °C to 371 °c.…

A: Initial Temperature, T1 = 289 °C = (289 + 273.15) K = 562.15 K Final Temperature, T2 = 371 °C =…

Q: Calculate the rate constant, k, for a reaction at 50.0 °C that has an activation energy of 87.9…

A: Given data: The activation energy is E=87.9 kJ/mol. The temperature is T=50°C. The frequency factor…

Q: Suppose that the root-mean-square velocity v-ms of water molecules (molecular mass is equal to 18.0…

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Q: A simple model for car- bon dioxide consists of

A: from the following relation ω = 2π f and also ω2 =  k/m here  ω = angular frequency f = linear…

Q: The density of dry air at NTP is 0.001293g/cm3. At what temperature will a litre of dry weigh 1g at…

A: according to the ideal gas equation,

Q: Which contains the most moles: 10.0 gg of hydrogen gas, 100 gg of carbon, or 500 gg of lead?

A: Let M be the mass of the element, Mmol be the molar mass of element.Write the expression for the…

Q: The following data are given for a biogas digester suitable for the output of six cows. The volume…

A: SOlution: given that Vd = 6 m3 Vg =4.1 m3

Q: Just a rock oin the ground! ACTION REACTION

A: Newton’s Third Law

Q: What is wrong with this refrigerator whose diagram is shown below?

A:

Q: How many molecules of carbon dioxide are there in 44g of carbon dioxide?

A: Number of molecules

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A: Microstates are the distinguished arrangement of the particle of the system. The formula to…

Q: At what temperature will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres? Use the…

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Q: Write the equilibrium constant expression for each of the following reactions: a. HC(g) Ox(g) Cl(g)…

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A: No, because it is not a good idea to put the batteries in fridge. Cold and moist environment will…

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Q: Calculate the moles of hydrogen (H2) present in a 500 ml sample of hydrogen gas at a pressure of 1…

A: In the given question We have to determine the number of moles of the hydrogen gas.

Q: The following data are given for a biogas digester suitable for the output of six cows. The volume…

A:

Q: The following data are given for a biogas digester suitable for the output of six COWS. The volume…

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Q: Why we use a number of antimony-bismuth couple in a thermopile?

A: A thermopile is basically made with an antimony-bismuth couple.When a temperature difference is…

Q: Action and reaction are equal and opposite, then why they do not cancel each other?

A: From Newton’s third law of motion, every action has an equal and opposite reaction. Thus, if an…

Q: ow that the elasticity of substitution for any homothetic production function is equal to the…

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Q: . The freezing point depression of a solution of glucose (C,H,206, molar mass = 180.0 g/mol) is…

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Q: iniform rod in the figure shown welghs 420 a) Compute the reaction at the smooth sur b) Determine…

A: for equilibrium of object forces must be equal and opposite

Q: Why do the electron-transfer reactions of the cytochromes differ in standard reduction potential,…

A: The electron-transfer reactions of the cytochromes differ in standard reduction potential, even…

Q: You are designing a new product that requires the use of a stable nonreactive gas. Which gas would…

A: SOlution: TO suggest the gas, for a new product that requires the use of a stable nonreactive gas.

Q: Find the density of the air at 0°C and 1.013 x 105 Pa. One mole of air may be assumed to be 79%…

A: Given data: The percentage composition of nitrogen in in one mole of air, %nitrogen=79%. The…

Q: Derive the steady state rate equation for the following mechanism for a trimolecular reaction: W +…

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Q: Arent you gonna convert 8000ft-lb to btu first?

A: Yes we have to convert lb-ft to btu as these are different unit. 1ft-lb = 0.00129 btu  8000 ft-lb =…

Q: The conversion of cyclopropane in the gas phase is a first-order reaction with a rate constant of…

A: The first order reaction is given by  where, Ro is the initial activity, R is the final activity, t…

Q: how many joules would be absorbed for the water?

A: Onc Calorie is equal to 4.2 Joules Here water needs 5000 Calories to get heated from 20 degrees…

Q: When does an object have a store of GPE?

A: Given:When does an object have a store of gravitational potential energy,(GPE)Now,An object having…