Hòa tan 19,35 gam hỗn hợp Zn và Mg bằng b (ml) dung dịch HCl nồng độ 2,5M thu được 12,32 lít khí H2 (đktc) 1, Viết PTHH của các phản ứng xảy ra
2, Tính phần trăm khối lượng mỗi kim loại trong hỗn hợp đầu
3, Xác định giá trị của b

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

може ли да зареждате повече информация, моля