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Maddy on Socratic I’ve always been a straight A student but now I’m struggling in my first year of middle school, it would mean so much to gain some help from others!
Although dams are beneficial to human populations because . . . - Socratic Reservoir takes lot of land People are displaced from natural habitat Natural flow of river is affected damage to plants, trees have to be cut Ecology is affected large water storage in new place causes Earth quakes If the dam bursts millions will be killed in populated countries
The velocity of sound in oxygen at 30 °C is 330 m sec. What . . . - Socratic The speed of sound in Helium is =1022ms^-1 The speed of sound in a gas is v=sqrt((gamma*R*T) (M)) The speed of sound is =vms^-1 The heat capacity ratio is =gamma The gas constant is =R=8 314J"mol"^(-1)K^-1 The Molecular weight of Helium is =M=0 004kg The temperature is =T=273+30=303K For Helium gamma=1 66 Therefore, v_(He)=sqrt((1 66*8 314*303) (0 004)) =1022ms^-1 According to the tables, The
How many molecules are in 72. 00 g of C_6H_12O_6? | Socratic 0 400xxN_A, where N_A = "Avogadro's number" Given that there are 72 00 g, this represents a molar quantity of (72 00*cancelg) (180 16*cancelg*mol^-1) = 0 400 mol We simply multiply this molar quantity by N_A" Avogadro's number": 0 400*molxx6 022xx10^23*mol^-1 = ??