Câu 1: Trong phân tử este (X) no, đơn chức, mạch hở có thành phần oxi chiếm 36,36 % khối lượng. Số đồng phân bố

tạo của X là

A. 4.

B. 5.

C. 2.

D. 3.

How do hydrocarbons differ in structure from carbohydrates.

Consider the reaction of hydrogen gas with chlorine gas: H2 + Cl2 → 2HCl 4 molecules of hydrogen gas react with 6 molecules of chlorine gas. 4 molecules of hydrogen gas in this reaction will produce 8 molecules of HCl.

An aqueous solution contains the following ions: Cl-, K+, Mg{2+}, NO3{-}, SO4{2-}. Is a precipitate likely to form? If so, giv ethe formula of the precipitate. A. MgSO4 B. MgCl2 C. K2SO4 D. No precipitate will form.

Because uranium-235 isn't found naturally in large quantities, engineers increase its concentration in nuclear fuel so that a chain reaction is more likely to occur. what is the name of this process?

How many moles of (NH4) 2S are there in 150 g of (NH4) 2S?

An atom that has the same amount of atoms of each element on both sides of the reaction obeys what law

Whats the main difference between a double replacement reaction and a single replacement

When is the absorption spectrum of an electron generated?

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration.

Which describes the volume of 1 mol of gas at standard temperature and pressure? ER The volume is greater for a larger mass of gas. The volume is the same for any gas. The volume depends on the size of the container.