Standard temperature and pressure Conditions

Minimize energy demands such as heating, cooling and carrying out reactions under pressure exceeding 1 atm aim for reactions run under standard temperature and pressure conditions (room temperature and 1 atm). 

Measurements made under standardized temperature and pressure conditions from a simple capillary rheometer and orilice of stipulated dimensions provide melt... 

Tlie next step will be the study the long term behaviour of selected materials in separate and both acids, under the standard temperature and pressure conditions given by the flow-sheet of the process, in a pressurised reactor. 

Assuming 0 =. 10" , virus particle to PFU ratio = 10 , and standard temperature and pressure conditions. values are standard deviations. 

If a 17.0 g sample of impure nickel metal reacts with excess carbon monoxide, CO, forming 6.25 L of Ni(CO)4 gas under standard temperature and pressure conditions, what is the percent by mass of nickel in the impure nickel metal sample ... 

Thinking it Through It is not a common practice on ACS exams, but do not assume that all information provided in a question is actually essential to its solution. Rather, decide on a route to the solution that will be the most expedient. Given that 6.25 L of Ni(CO)4fgJ form at standard temperature and pressure conditions, the molar volume of 22.4 L can be used as a conversion factor to find the number of moles of Ni(CO>4 present. Then the coefficients in the balanced chemical equation can be applied, observing that one mole of Ni(CO)4 reacts to produce one mole of Ni. The atomic molar mass for nickel can then be used to find the number of grams of Ni present. 

What mass of CaC03 will produce 8.0 L of COj, measured at standard temperature and pressure conditions . 

The constants k and a are determined experimentally. For example, the range of an alpha particle in air at STP (standard temperature and pressure conditions) is given by Eq. (2.13a) (Eichholz and Poston 1979) ... 

STP (NTP) Standard temperature and pressure. Conditions used internationally when measuring quantities that vary with both pressure and temperature (such as the density of a gas). The values are 101 325 Pa (approximately 100 kPa) and 0°C (273.15 K). See also standard pressure standard temperature. 

Co), which normalizes the results to standard temperature and pressure conditions (i.e., 0°C and 760 torr) ... 

In evaluating K, the drift velocity of the ion packet depends not only on the electrostatic field strength, but also on the pressure (p, torr) of the neutral drift gas and the temperature (T, kelvin) of separation. Therefore, it is conventional practice to report K as the standard or reduced mobility (Kq), which normalizes the results to standard temperature and pressure conditions (i.e., 0°C and 760 torr) ... 

Perfluorotributylamine is liquid and is therefore simple to manipulate in standard temperature and pressure conditions and its vapor tension is such that the surface vapor of the compound is easy to introduce in the mass spectrometer via a capillary tube equipped with an electrovalve. 

---