39 Which formula represents a molecule with the most polar bond? (1) CO (3) HI

(2) NO (4) HCl

When tin (IV) oxide is heated with carbon in a process called smelting, the element tin can be extracted. SnO 2 ( s ) + 2C ( s ) → Sn (l) + 2CO ( g) a. Interpret the chemical equation in terms of moles and mass.

Which is the best predictor of the radioactive nature of an isotope? (A) the proton-to-electron ratio (B) the neutron-to-proton ratio (C) the neutron-to-electron (D) ratio the electron-to-proton ratio

Which of the following is not the same as 0.032 liters? 0.00332hL 320cL 32mL

The volume of 0.05 M H2SO4 is needed to completely neutralise 15ml of 0.1 M NaOH solution is

What's makes up chromatin

How does heat transfer takes place between any two systems?

Hydrate name of CaCl2 * 8 H2O

Calculate the heat evolved from a mixture of 14.1 l of sulfure dioxide

Which stament best describes a solution

Which answer accurately describes the difference between speed and velocity? Read each answer choice carefully. Question 4 options: A. If speed is constant, then velocity is also constant. B. Speed requires direction.