Blog

The following table shows the results of a two-factor analysis of variance with 2 levels of factor A, 3 levels of factor B, and a separate sample of n = 5 participants in each of the treatment conditions. Note that several values are missing in the table. What is the missing value for the F-ratio for the A × B interaction? Source           SS      df      MS Between        80      xx A                     8      xx      xx    F = xx B                   xx      xx      20    F = xx A × B              xx      xx      xx    F = xx Within           xx      xx      xx      Total            176      xx

The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is __________ kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol, and ΔHvap = 40.67 kJ/mol  

Of the following substances, __________ has the highest boiling point.  

The electron density of the 2s orbital is asymmetric.

The O-C-O bond angle in the CO32- ion is approximately __________.  

Why should a swabbed sample not be rubbed across the slide during preparation?

Which classification of culture medium applies to blood agar?

Other than a Gram stain preparation, which sample should be gently treated with heat prior to staining?

What is the best technique to obtain a sample from a lymph node?

What color change in DTM indicates the potential presence of dermatophytes?