Cho 9,2 kim loại kìm R vào Nước dư thu được dd D và khí ở đktc dung dịch D hoà tan vừa đủ 400ml dd H2SO4 và 0,5M xác định kim loại R và V( L)

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these