Adevarat sau fals CHIMIE 1)Alcoolii sunt compusi, care contin in molecula grupe hidroxil OH, legate cu rest de hidrocarbura ...

2)Molecula etanoului contine o grupa hidroxil OH unita cu rest de hidrocarbura a etanului - C2H5 ...

3)Alcoolii inferiori metanolulsi etanolul sunt gaze insolubile in apa ...

4)Denumirea metanol provine de la hidrocarbura metan la care se adauga sufixul-ol...

Ethanol (c2h5oh) is produced from the fermentation of sucrose in the presence of enzymes. c12h22o11(aq) + h2o(g) 4 c2h5oh(l) + 4 co2(g) determine the theoretical yield and the percent yields of ethanol if 680. g sucrose undergoes fermentation and 326.5 g ethanol is obtained. theoretical _ g _ percent %

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?