Chemistry, 10.07.2019 20:30 orangnevertrust69
At a festival, spherical balloons with a radius of 140.cm are to be inflated with hot air and released. the air at the festival will have a temperature of 25°c and must be heated to 100°c to make the balloons float. 1.00kg of propane c3h8 fuel are available to be burned to heat the air. calculate the maximum number of balloons that can be inflated with hot air. here are some data you may find useful: specific heat capacity of air: 1.009j·g°c density of air at 100°c: 0.946kgm3 density of propane at 100°c: 1.440kgm3 formation enthalpy of propane at 25°c: −103.85kjmol
Answers: 1
Chemistry, 22.06.2019 07:00
The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.
Answers: 2
Chemistry, 22.06.2019 22:00
Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope
Answers: 1
Chemistry, 23.06.2019 01:30
At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.
Answers: 1
Chemistry, 23.06.2019 02:20
In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me
Answers: 2
At a festival, spherical balloons with a radius of 140.cm are to be inflated with hot air and releas...
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