When two moles of hydrogen molecules(H2) and one moleof oxygen molecules (O2) react to form two moles of water (H2O)the energy released is 484 kJ. How much does themass decrease in this reaction? What % of the total originalmass is this?
Q: how much he is required from The environment to warm up 800 KG humans from 37C to 37.5C in joules?
A:
Q: Two 50g ice cubes are dropped into 200g of water in a thermally insulated container. The water is…
A: total mass of ice = 50g + 50 g = 100 g mass of water = 200 g initial temperature of water = 25oC…
Q: Much of the gas near the Sun is atomic hydrogen. Its temperature would have to be 1.5×107 K for the…
A:
Q: A woman expends 95 kJ of energy walking a kilometer. The energy is supplied by the metabolic…
A: Given data: The energy spend by walking is E=95 kJ/km. The efficiency is η=35%. The enthalpy of…
Q: A stream of refrigerant-134a at 1 MPa and 20°C is mixed with another stream at 1 MPa and 80°C. If…
A: Basic Details According to the mass balance equation, the mass of the system remains constant. The…
Q: A star radiates 3.75 times less power than the Sun. What is the ratio of the temperature of the star…
A:
Q: Voyager I is a space probe launched in 1977. An aluminum antenna on Voyager was 37.9 ? long on…
A: L0=Length of antenna=37.9 mα=Coefficient of linear expansion of aluminum=24×10−6 °C-1Final…
Q: An ideal gas, at pressure 4.5 atmospheres, in a volume 1.7 m3 and at a temperature of 324 K, is…
A: Given data: Initial pressure (P1) = 4.5 atm, initial volume (V1) = 1.7m3 Initial temperature (T1) =…
Q: When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05…
A: Given,
Q: 69 ◦F is considered room temperature, what is this in ◦C, R, and K
A: Given The room temperature is T=69°F The unit conversion from Fehranite to degree Celsius is shown…
Q: Even when shut down after a period of normal use,a large commercial nuclear reactor transfers…
A: Given : Rate of heat ( P ) = Qt = 150 MW = 150 * 106 W Mass of reactor core = 1.60 * 105 kg Specific…
Q: A 48.9 g silver spoon at 15.9°C is placed in a cup of coffee at 90.9°C. A short time later, the…
A: The heat needed to change the temperature of an object is given by Q = mc∆T, where m = the mass of…
Q: A piece ot hat ion at ITO C is putin a tub 18°c water. Atter S min ,the iron's tenmperature is 42°C.…
A: As per Newton’s law of cooling, the iron’s temperature at any time can be represented as, Here, Ts,…
Q: An ice cube with a mass of 45.8 g at 0.0 ∘C is added to a glass containing 4.50×102 g of water at…
A:
Q: How much energy is required to convert 20 kg of ice at -5 ° C into water vapor at 120 ° C?
A:
Q: A galss flask of volume 461 cm3 is totally filled with a mercury at 66 °C. When the temprature of…
A:
Q: The burning of gasoline in a car releases about 3.0 x 104 kcal/galIf a car averages 41 km/gal when…
A: Energy released = 3.0×104 kcal/gal41 km/gal=731.7 kcal/km This is the amount of energy released per…
Q: A 6.2 L balloon is filled with He at 1.00bar pressure and 298 K. How many He atoms are in the…
A:
Q: A scientist recorded the temperature of a freshwater lake at 9am and it was 18 C. She has already…
A: When a substance is heated from its initial temperature the material absorbs energy and its…
Q: The volume of air taken in by a warm-blooded vertebrate is 236 L/day at standard temperature and…
A: Volume of air taken per day at standard temperature and pressure (V) = 236 L Temperature of the…
Q: A container is filled with 5g of gas at STP. It is heated to 35°C with pressure being kept constant.…
A: PV=nRTn1T1=PVR=constantn1T1=n2T2mMT1=m-xMT2m is the mass of gas at STPM is the molar massx is the…
Q: 750 g of hot curry at 80⁰C cools down to 23⁰C after 1 hour left in the kitchen. If the specific…
A:
Q: You are using an apparatus that produces heat by condensing water steam at 100°C and then cooling…
A:
Q: Water at 17.0 °C is sprayed onto 0.239 kg of molten gold at 1063 °C (its melting point). The water…
A: in this question we determine minimum mass of water.
Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 oC? (Fundamental…
A: The amount of energy required to convert m gram 100°C water to 100°C steam is E=mL where, L= latent…
Q: A galss flask of volume 266 cm is totally filled with a mercury at 27 °C. When the temprature of the…
A:
Q: #5A-C
A:
Q: uestion 8 O out of 1 points A galss flask of volume 585 m is totally filled with a mercury at 70 °C.…
A:
Q: A container is filled with 5 g of a gas at STP. It is heated to 35°C with pressure being kept…
A: SOlution: Given that m = 5 g at STP T2 = 35 C
Q: How does the density of He-gas at 22C compare to the density of air at 22C? (He=5 g/mol)
A:
Q: your team is developing insulation for the interior of a spaceship for a trip to Mars. Should you…
A: your team is developing insulation for the interior of a spaceship for a trip to Mars. Should you…
Q: What is the change in the enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to…
A:
Q: ou pour 750 e of het coffee into an aluminua mess is 2sg. You measured He temp of the eoffee to be…
A: According to principle of calorimetry Heat given by hot body = heat taken by cold body
Q: Calculate AH, AS, and AG at 298 K for the reaction below. Please take note of units. B2H6(g) 2BH3(g)…
A:
Q: Assume Lake Michigan contains 4.90 x 1012 m³ of water, and assume the water's density is that of…
A: Given Data, Volume of Water (V)=4.90×1012 m3 Initial Temperature(Ti)=12.20C Final…
Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 °C? The answer…
A: Given:- mass of water = 4g currently temperature of the water = 100°C Find:- How much energy is…
Q: What mass of water at 25.0° C must be allowed to come to thermal equilibrium with a 1.85 -kg cube of…
A:
Q: 2.8 At a temperature of 100°C and an absolute pressure of 5 at- mospheres, what is the ratio of the…
A:
Q: A geologist working in the field drinks her morning coffee out of an aluminium cup. The cup has a…
A: The expression for the required final temperature from calorimetry,
Q: How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 °C? The answer…
A: Energy required = mass x latent heat of evaporation
Q: If 842 J of heat is needed to increase the temperature of ethane gas (C2H6) in a 15 liter container…
A: Heat transferred
Q: The specchic heat of steam at atmospheric pressure is 2,010 J/kg. °C , Eualuate the energy reguired…
A: Given Data : The specific heat of steam at atmospheric pressure is given as c=2010 JKg 0C The mass…
Q: How many kilograms of water is needed to raise its temperature by 25C when energy expense is…
A: Given: Temperature raise (ΔT) = 25 °C Heat Energy (Q) = 3.9 × 104 J Unknown: Mass of water (m) =?
When two moles of hydrogen molecules(H2) and one mole
of oxygen molecules (O2) react to form two moles of water (H2O)
the energy released is 484 kJ. How much does the
mass decrease in this reaction? What % of the total original
mass is this?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- ow much energy (in J) is required to evaporate 25% of 4g of water currently at 100 oC? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)How much energy is required to convert 3.5kg of ice at OC to water at 29C ? The latent heat of fusion of ice is: Lf 3.33 × 105J/kg = The specific heat capacity of water is 4186J/kg C Do NOT include units in your answer. Round your answer to 2 decimal places. Do NOT change to scientific notation. Ignore significant figures.How much energy (in J) is required to evaporate 25% of 4g of water currently at 100 oC? The answer (in fundamental SI unit) is ___________ (type the numeric value only, dont use scientific notation)
- ...In an experiment, 1 kg of fuel was completely burnt. The heat produced was measured to be 9,000 kJ. a. What will be the head produced for 7 kg of fuel?As radioactive plutonium isotopes decay, they generate heat as a byproduct. Pu-239 generates 1.9W/kg of heat. How much heat will 1.25molof Pu-239 release after decaying for three hours? Express this quantity in units of calories. Assume Pu-239 has a molecular weight of 244g/mol.Using Area-Moment Method. Consider 150 mm x 150 mm section and E = 80 GPa. a=2.8 b=24.0 c=28 Determine the following: Vertical Reaction at B in kN. Moment Reaction at A in kN-m.
- Stan Moneymaker needs 15 gallons of gasoline to top off his automobile’s gas tank. If he drives an extra eight miles (round trip) to a gas station on the outskirts of town, Stan can save $0.10 per gallon on the price of gasoline. Suppose gasoline costs $3.90 per gallon and Stan’s car gets 25 mpg for intown driving. Should Stan make the trip to get less expensive gasoline? Each mile that Stan drives creates one pound of carbon dioxide. Each pound of CO2 has a cost impact of $0.02 on the environment. What other factors (cost and otherwise) should Stan consider in his decision-making?Calculate AH, AS, and AG at 298 K for the reaction below. Please take note of units. B2H6(g) 2BH3(g) B2H6(g) 2BH3(g) AH 35 (kJ/mol) 110.0 IS 232.0 (J/mol-K) 188.0 AHxn kJ J/mol·K AGrxn kJ 關 %3DA number of particles are moving in a box. Their speeds are measured, and the number of particles, N₁, with a speed of v¿ is listed in the table below. a) b) What is the root-mean-square speed of the particles ? What is the average speed ? What it the most probable speed ? Vi Ni 1.0 1 2.0 2 3.0 6 4.0 5.0 105
- A bag of frozen vegetables with temperature 32◦F is placed in a 75◦F room. After 20 minutes, the temperature of the vegetables has risen to 41◦F. Using this information, find an exponential formula for the temperature of the vegetables where time is measured in minutes. To find the exponential formula, transform the temperature into a new variable for which the problem can be solved as an exponential growth/decay problem. Then find the formula in that variable and transform back to temperature. Based on the formula, what is the temperature of the vegetables after 45 minutes?What is the r.m.s speed of diatomic tritium (T2) in which the nucleus contains two neutrons and one proton at 273k and 100kPa.Amy 68 kg in mass eat a Sausage 'N Egg McMuffin and drink a medium size orange juice for breakfast. After breakfast, she decides to "work off" all the consumed energies by running up a 5-degree slope trail at 15 km/h. [Answer in 2 significant figures] Use 1 cal = 4.184 J. %3D Food Energy content in Cal Sausage 'N Egg McMuffin 480 Medium size orange juice 190 Activity on level ground Metabolic power (W) Running at 15 km/h 1150 [Answer in 2 significant figures] What is the necessary metabolic power for Amy? [Hint: You can model her power needs as the sum of the power to walk on level ground plus the power needed to raise her body by the appropriate amount. Assume that the efficiency of the body in using energy is 25%] How far did Amy run to work off all the energies she consumed?