Please help me with the following questions.
1.
7 Par\"! A carpenter builds an exterior house wall with a layer of wood 3.0 cm thick on the outside and a | er of rofoam insulation 2.4 cm thick on the inside wall surface The moi-Irhas kiwi) 080W} {m- K] and the Styrofoam has What is the temperature at the plane where the wood meets the Styrofoam? k = 0.010 Wf-{m - K}. The interior surface temperature is 20.030 and the Express your answer in Celsius degrees. exterior surface temperature is 3140' C. For related proble msolving tips and strategies, you mayr want to view a Video Tutor Solution of Conduction through two bars in contact. "C PartA How many moles of helium are in the tank? A 20.0 L tank contains 4.76 x 10 * kg of helium at 17.0"C. The molar Express your answer in moles. mass of helium is 4.00 g/mol. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Volume of an ideal gas at stp. AEd n= mol Submit Request Answer Part B What is the pressure in the tank (in pascals)? Express your answer in pascals. AEQ p= Pa Submit Request Answer Part C What is the pressure in the tank (in atmospheres)? Express your answer in atmospheres. AEd atmReview | Constants Problem-Solving Strategy 18.2: Kinetic-molecular theory IDENTIFY the relevant concepts: Learning Goal: Use the results of the kinetic-molecular model whenever you are asked to relate macroscopic properties of a gas, such as temperature and pressure, to microscopic properties, such as At what temperature is the root-mean-square speed of nitrogen molecules molecular speeds equal to the root-mean-square speed of hydrogen molecules at 20.0 C? SET UP the problem using the following steps: The molar mass of a nitrogen atom is 14.0 g/mol and the molar mass of a 1. Identify which variables are known and which are the unknown target variables. hydrogen atom is 1.01g/mol 2. Choose the equation(s) to be used from among 3 Ktr = -n.RT ,m(v2 ) av = 3KT 3RT Urms = V (32 ) av = m M EXECUTE the solution as follows: 1. The usual units for molar mass M are grams per mole; for example, the molar mass of oxygen is 32 g/mol. These units are often omitted in tables. When you use SI units in equations, such as the equations above, you must express M in kilograms per mole by multiplying the value shown in the table by the ratio 1 kg/10 g. Thus, in SI units, M for oxygen is 32 x 10-kg/mol. 2. Determine whether you are working on a "per molecule" basis or a "per mole" basis. Keep in mind that m is the mass of a molecule and M is the mass of a mole; N is the number of molecules, and n is the number of moles; k is the gas constant per molecule, and R is the gas constant per mole. 3. Remember that T must always be in kelvins. EVALUTE your answer. Keep in mind that typical molecular speeds at room temperature are several hundred meters per second. If your answer seems dramatically different, recheck your calculations. IDENTIFY the relevant concepts Use the results of the kinetic-molecular model to compare the molecular speed of nitrogen and hydrogen gas molecules to their temperature. SET UPSET UP Learning Goal: V Part A At what temperature is the root-mean-square speed of nitrogen molecules equal to the root-mean-square speed of hydrogen molecules at 20.0 C? Below is a list of some of the relevant quantities in this problem; Subscripts H2 and N2 refer to the hydrogen and nitrogen molecules, respectively. Which of the following quantities The molar mass of a nitrogen atom is 14.0 g/mol and the molar mass of a are known? hydrogen atom is 1.01 g/mol. Check all that apply. O mN2 O (Urms ) NZ O MHz O (Kur ) Hz O THE O (Kur) N2 O MN2 O (Urms ) Hz O MHz O IN2 Submit Request AnswerDiatomic carbon dioxide gas {002 has molar mass of 44.0 gf'mol) is at a temperature of 294 K. V V Part A Calculate the most probable speed amp. Express your answer in meters per second. \"mp : mfs Quest Answer Part B Calculate the average speed aw. Express your answer in meters per second. um, = mfs Quest Answer Part C Calculate the rootmeansquare speed um. Express your answer in meters per second. Info Part A On the phase diagram, which section of curve represents the pressure and temperature values at which ammonia will boil? Ammonia (NH3) is a colorless, pungent gas at standard pressure and temperature. It is a natural metabolic byproduct, usually getting released Express your answer as two letters that lie on a section of the appropriate curve. For instance, if you believe points A and B are correct, enter AB. n respiration, sweat, and urine. However, because ammonia is caustic, exposure to large quantities of it can cause illness and even death. View Available Hint(s) Despite its inherent dangers, ammonia is environmentally friendly in small quantities and has many applications in our economy. It can be used as a boiling curve = fertilizer, as a source of hydrogen gas for welding, as a refrigerant, in the production of nitric acid and sodium carbonate, in metallurgy, and in the infamous smelling salts used to revive unconscious people. Ammonia today can be mass produced inexpensively in chemical refineries. Submit To safely produce and store ammonia, its physical and thermodynamic properties must be understood. Physically, ammonia is a strong base that reacts with acids and metals. The thermodynamic properties describing the phases of ammonia (solid, liquid, and gas) and the transitions Part B Complete previous part(s) between the phases are just as important. The relationship of these phases to pressure and temperature is quantitatively described by Part C ammonia's p7 phase diagram. (Figure 1)Note that, in this diagram, the pressure axis is not to scale. From the diagram, the melting temperature, boiling temperature, and On the phase diagram, which section of curve represents the pressure and temperature values at which ammonia will sublimate? other quantities can be determined for any pressure. The pressure and temperature range for each of the phases is shown by its own unique Express the answer as two letters that lie on a section of the appropriate curve. For instance, if you believe points A and B are correct, enter AB. area of the graph. The lines bounding each of the phases on the diagram View Available Hint(s) represent the temperatures and pressures at which two states can Figure

Question

Please help me with the following questions.

1.

7 Par\"! A carpenter builds an exterior house wall with a layer of wood 3.0 cm thick on the outside and a | er of rofoam insulation 2.4 cm thick on the inside wall surface The moi-Irhas kiwi) 080W} {m- K] and the Styrofoam has What is the temperature at the plane where the wood meets the Styrofoam? k = 0.010 Wf-{m - K}. The interior surface temperature is 20.030 and the Express your answer in Celsius degrees. exterior surface temperature is 3140' C. For related proble msolving tips and strategies, you mayr want to view a Video Tutor Solution of Conduction through two bars in contact. "C PartA How many moles of helium are in the tank? A 20.0 L tank contains 4.76 x 10 * kg of helium at 17.0"C. The molar Express your answer in moles. mass of helium is 4.00 g/mol. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Volume of an ideal gas at stp. AEd n= mol Submit Request Answer Part B What is the pressure in the tank (in pascals)? Express your answer in pascals. AEQ p= Pa Submit Request Answer Part C What is the pressure in the tank (in atmospheres)? Express your answer in atmospheres. AEd atmReview | Constants Problem-Solving Strategy 18.2: Kinetic-molecular theory IDENTIFY the relevant concepts: Learning Goal: Use the results of the kinetic-molecular model whenever you are asked to relate macroscopic properties of a gas, such as temperature and pressure, to microscopic properties, such as At what temperature is the root-mean-square speed of nitrogen molecules molecular speeds equal to the root-mean-square speed of hydrogen molecules at 20.0 C? SET UP the problem using the following steps: The molar mass of a nitrogen atom is 14.0 g/mol and the molar mass of a 1. Identify which variables are known and which are the unknown target variables. hydrogen atom is 1.01g/mol 2. Choose the equation(s) to be used from among 3 Ktr = -n.RT ,m(v2 ) av = 3KT 3RT Urms = V (32 ) av = m M EXECUTE the solution as follows: 1. The usual units for molar mass M are grams per mole; for example, the molar mass of oxygen is 32 g/mol. These units are often omitted in tables. When you use SI units in equations, such as the equations above, you must express M in kilograms per mole by multiplying the value shown in the table by the ratio 1 kg/10 g. Thus, in SI units, M for oxygen is 32 x 10-kg/mol. 2. Determine whether you are working on a "per molecule" basis or a "per mole" basis. Keep in mind that m is the mass of a molecule and M is the mass of a mole; N is the number of molecules, and n is the number of moles; k is the gas constant per molecule, and R is the gas constant per mole. 3. Remember that T must always be in kelvins. EVALUTE your answer. Keep in mind that typical molecular speeds at room temperature are several hundred meters per second. If your answer seems dramatically different, recheck your calculations. IDENTIFY the relevant concepts Use the results of the kinetic-molecular model to compare the molecular speed of nitrogen and hydrogen gas molecules to their temperature. SET UPSET UP Learning Goal: V Part A At what temperature is the root-mean-square speed of nitrogen molecules equal to the root-mean-square speed of hydrogen molecules at 20.0 C? Below is a list of some of the relevant quantities in this problem; Subscripts H2 and N2 refer to the hydrogen and nitrogen molecules, respectively. Which of the following quantities The molar mass of a nitrogen atom is 14.0 g/mol and the molar mass of a are known? hydrogen atom is 1.01 g/mol. Check all that apply. O mN2 O (Urms ) NZ O MHz O (Kur ) Hz O THE O (Kur) N2 O MN2 O (Urms ) Hz O MHz O IN2 Submit Request AnswerDiatomic carbon dioxide gas {002 has molar mass of 44.0 gf'mol) is at a temperature of 294 K. V V Part A Calculate the most probable speed amp. Express your answer in meters per second. \"mp : mfs Quest Answer Part B Calculate the average speed aw. Express your answer in meters per second. um, = mfs Quest Answer Part C Calculate the rootmeansquare speed um. Express your answer in meters per second. Info Part A On the phase diagram, which section of curve represents the pressure and temperature values at which ammonia will boil? Ammonia (NH3) is a colorless, pungent gas at standard pressure and temperature. It is a natural metabolic byproduct, usually getting released Express your answer as two letters that lie on a section of the appropriate curve. For instance, if you believe points A and B are correct, enter AB. n respiration, sweat, and urine. However, because ammonia is caustic, exposure to large quantities of it can cause illness and even death. View Available Hint(s) Despite its inherent dangers, ammonia is environmentally friendly in small quantities and has many applications in our economy. It can be used as a boiling curve = fertilizer, as a source of hydrogen gas for welding, as a refrigerant, in the production of nitric acid and sodium carbonate, in metallurgy, and in the infamous smelling salts used to revive unconscious people. Ammonia today can be mass produced inexpensively in chemical refineries. Submit To safely produce and store ammonia, its physical and thermodynamic properties must be understood. Physically, ammonia is a strong base that reacts with acids and metals. The thermodynamic properties describing the phases of ammonia (solid, liquid, and gas) and the transitions Part B Complete previous part(s) between the phases are just as important. The relationship of these phases to pressure and temperature is quantitatively described by Part C ammonia's p7 phase diagram. (Figure 1)Note that, in this diagram, the pressure axis is not to scale. From the diagram, the melting temperature, boiling temperature, and On the phase diagram, which section of curve represents the pressure and temperature values at which ammonia will sublimate? other quantities can be determined for any pressure. The pressure and temperature range for each of the phases is shown by its own unique Express the answer as two letters that lie on a section of the appropriate curve. For instance, if you believe points A and B are correct, enter AB. area of the graph. The lines bounding each of the phases on the diagram View Available Hint(s) represent the temperatures and pressures at which two states can Figure