Cho oxit MxOy của kim loại M có hóa trị không đổi. Hãy xác định công thức của oxit trên biết rằng 3,06 gam oxit nguyên chất tan trong dung dịch HNO3 dư thu được 5,22 gam muối.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.