Chemistry

Chemistry, 13.09.2019 23:30, ctomo2004

When the relative humidity is 100%,we say the air is (3 pts) a) saturated b) supercooled c) superheated d) very humid

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Chemistry, 23.08.2019 19:30, thederpbro

When the relative humidity is 90%, we say the air is: supercooled superheated saturated humid

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Mathematics, 16.09.2019 14:00, kiarajack456

The heat index combines air temperature with relative humidity to give an idea as to how hot it "feels" outside, much the same way that the wind chill index links cold temperatures and wind speed. the national weather service uses the following equation to determine the heat index: hi=-42.379+2.049t+10.143r-0.225tr-(6.838*10^-3)t^2-0.0548r^2+ (1.229*10^-3)t^2r+(8.528*10^- 4)tr^2-(1.990*10^-6)t^2r^2 where t is the air temperature in degrees fahrenheit and r is the relative humidity (ie. r=%% if the relative humidity is 55%). the equation is valid only for air temperatures above 80 degrees fahrenheit and relative humidities above 40%. 23.) on a hot humid summer day, the temperature reaches 95 degrees fahrenheit with a relative humidity of 75%. calculate the heat index to the nearest degree. 24.) write an equation that gives the heat index hi for any temperature t given a relative humidity of 100%. round your coefficients to 3 decimal places. 25.) on a warm day both the air temperature and the heat index are 85 degrees fahrenheit. what is the relative humidity? round any coefficients to 3 decimal places and give your answer to the nearest percent.

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Geography, 10.10.2019 01:20, NathanMoreno2019

Equipment list 1 psychrometer 1 humidity table cloth covers for the wet bulb 1400 ml beaker 1 thermometer 1 styrofoam cup 1 plastic pitcher water ice l. introduction the relative humidity and dew point are critical values in understanding weather. in this laboratory exercise, you will measure the relative humidity and dew point, both indoors and outdoors. you will also compare your results with weather station values. il. theory humidity is the amount of water vapor in the air. saturated air is air that is filled to capacity with water vapor the capacity air has to hold water vapor is temperature dependent . o warm air has a much greater capacity than cold air water vapor adds pressure (called vapor pressure) to the air the most common way to report the amount of humidity in the air is to use relative humidity. the relative humidity is the ratio of the air's actual water vapor content compared with the amount of water vapor required for saturation a given temperature. the relative humidity: . is expressed as a percent . for saturated air content equals capacity has a 100 percent relative humidity o o can be changed in two ways add or subtract moisture to the air changing the air temperature o o the dew point temperature: the temperature the air needs to be cooled to reach saturation. cooling the air below the dew point causes condensation (e g. dew, fog, or cloud formation) 1

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When the relative humidity is 100%,we say the air is (3 pts) a) saturated b) supercooled c) superhea...

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