The value, k 1 ( 713 K ) = 8.1 × 10 2 cm 3 mol - 1 s - 1, is consistent with spin-unrestricted density functional theory. Extrapolation to a wider temperature range through ab initio calculations yields the rate constant k 1 = 3.6 × 10 4 T 2.5 exp ( - 14 425 [ K ] / ...
The authors present direct calculations of the thermal rate constant for the F + H{sub 2} reaction. The rate is obtained from the time integral of the flux... WH Miller,WH Thompson,H Wang - 《Journal of Physical Chemistry A》 被引量: 81发表: 1998年 Kinetics of the Reaction between ...
考察rate和rate constant的影响因素,注意题目说的是不正确的选项。rate和rate constant都随T增加而增加,A&B正确;OH-的添加会减少 [H+],[H+]降低会降低反应速率,C正确;D错误。 5、D。考察rate equation和halogenoalkane 水解 SN1,SN2机理和有机物命名。因为rate equation是unimolecular所以是SN1,所以反应物应该...
Furthermore, the constant necessity to hire and train new employees to be productive can be costly, weighing down on a company’s profit margins (and reducing output). Therefore, the attrition rate reflects the pace of employee turnover, expressed as a percentage, which serves as a key perfor...
The cap rate is a pro-forma measure of the implied return on an investment property as of the date of acquisition. In contrast, the constant denominator in the cash yield remains indifferent to the current state of the real estate market conditions, considering fixed purchase price and equity ...
We presented a reliable empirical rate constant (kOH) estimation method for the hydrogen abstraction reaction of HFEs, HFCs with OH radicals at 298 K. The present method comprises of two procedures. In the beginning, we calculated the BDEs of the C–H bond at 298 K by using ANN technique ...
The filter introduces a group delay of 36 samples, which is equivalent to an output delay of 3.6 time units accounting for the sample rateFs=10 Hz. Calculate the output delay using center-of-mass weighted sum formula∑L−1k=0k⋅h[k]∑L−1j=0h[j]and verify that it is indeed 3.6...
The simplest variation of the dividend discount model is the Gordon Growth Model, which assumes that dividends are anticipated to grow indefinitely at a constant rate. The Gordon Growth Model approximates the share price of a company by taking the next period’s dividend per share (DPS) and di...
Though broadly used across the financial sector, EAR has several downsides. The EAR calculation assumes that the interest rate will be constant throughout the entire period (i.e., the full year) and that there are no fluctuations in rates. However, in reality, interest rates can change freque...
For the last 10 years, a local business has enjoyed annualcash flowsof $500,000; based on forecasts, these cash flows are expected to continue indefinitely. The business's annual expenses are a constant $100,000. Therefore, the business earns $400,000 annually ($500,000 - $100,000 = ...