|A snow maker at a resort pumps 130 kg of lake water per minute and sprays it into the air above a ski run. The water droplets freeze in the air and fall to the ground, forming a layer of snow. If all the water pumped into the air turns to snow, and the snow cools to the ambient air temper- ature of – 7.0 °C, how much heat does the snow-making process release each minute? Assume that the temperature of the lake water is 12.0 °C, and use 2.00 x 10° J/(kg · C°) for the specific heat capacity of snow. *66.

54. || The air temperature and pressure in a laboratory are 20°C and 1.0 atm. A 1.0 L container is open to the air. The container is then sealed and placed in a bath of boiling water. After reaching thermal equilibrium, the container is opened. How many moles of air escape?

A 60.0-kg runner expends 359 W of power while running a marathon. Assuming 12.5% of the energy is delivered to the muscle tissue and that the excess energy is removed from the body by sweating, determine the volume of bodily fluid (assume it is water) lost per hour. (At 37.0°C the latent heat of vaporization of water is 2.41 ✕ 106 J/kg.) cm3

When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy that would raise your body temperature if it were not eliminated. The evaporation of perspiration is the primary mechanism for eliminating this energy. Determine the amount of water you lose to evaporation when running for 58 minutes at a rate that uses 400 kcal/h above your BMR. (That amount is often considered to be the "maximum fat-burning" energy output. The latent heat of vaporization of water at room temperature is 2.5  106 J/kg.) A) _________ kgB)The metabolism of 1 gram of fat generates approximately 8.63 kcal of energy and produces approximately 1 gram of water. (The hydrogen atoms in the fat molecule are transferred to oxygen to form water.) What fraction of your need for water will be provided by fat metabolism?______________ %

How much energy is required to raise the temperature of 0.25 kg of water from 20.°C to 80.°C? Answer in J. (What must i do to solve this?)

Question 7 Please write neatly

Describe the different mechanisms of heat transfer that affect the drying of washing outdoors. Is it better to have a sheltered sunny spot or a shaded windy location? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B IU S Paragraph Open Sans, s... v 10pt Ix •.. > !!! >