Afuel gas containing 86% methane, 8% ethane, and 6% propane by volume flows to a furnace at a rate of 1450 m3/h at 15°c and 150 kpa (gauge), where it is burned with 8% excess air. calculate the required flow rate of air in scmh (standard cubic meters per hour).
a certain gas has a molecular weight of 30.0, a critical temperature of 310 k, and a critical pressure of 4.5 mpa. calculate the density in kg/m5 (b) if the gas obeys the law of corresponding states of this gas at 465 k and 9.0 mpa (a) if the gas is ideal and

the temperature of the gas, in k, not celsius.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol