Câu 2: (0,5 đ) Tính số ml H3PO4 85% (d=1,69 g/ml) phải lấy để hòa tan vào nước và pha loãng thành 500 ml thì pH = 3.
Biết axit H3PO4 có có pKal=2,15; pKaz=7,31; pKa3= 12,32.

Where are the questions

They are all decomposition reactions.

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.