2.Într-un vas închis se află o masă m=14g azot gazos la presiunea inițială normală și temperatura inițială t 1 =27 0 C. După încălzire izocoră presiunea a crescut de n=2 ori. Aflați
a a)temperatura finală și volumul ocupat de gaz
b)căldura absorbită
c)lucrul mecanic efectuat
d)variația energiei interne

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount