Cho 0.62 g P tác dụng vừa đủ với m g dung dịch H2SO4 98%.Sau phản ứng hoàn toàn thu được V lít khí SO2 (đktc là sp khử duy nhất) viết pthh tính m, V

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

the answer is c.the valence of the atoms combine .