We present high resolution X-ray spectra of the X-ray bright classical T Tauri star , TW Hydrae , covering the wavelength range of 1.5-25 Å . The differential emission measure derived from fluxes of temperature-sensitive emission lines shows a plasma with a sharply peaked temperature distribution , peaking at \log T = 6.5 . Abundance anomalies are apparent , with iron very deficient relative to oxygen , while neon is enhanced relative to oxygen . Density-sensitive line ratios of Ne ix and O vii indicate densities near \log n _ { e } = 13 . A flare with rapid ( \sim 1 ks ) rise time was detected during our 48 ksec observation ; however , based on analysis of the emission-line spectrum during quiescent and flaring states , the derived plasma parameters do not appear strongly time-dependent . The inferred plasma temperature distribution and densities are consistent with a model in which the bulk of the X-ray emission from TW Hya is generated via mass accretion from its circumstellar disk . Assuming accretion powers the X-ray emission , our results for \log n _ { e } suggest an accretion rate of \sim 10 ^ { -8 } M _ { \odot } yr ^ { -1 } .