Identifique a equação que forma uma base:

a) 2NaOH+2SO=Na2SO4+H2O

b) 2NO2+2O=HNO2+HNO3

c) H2O+CaO=Ca (OH) 2

d) SO2+H2O=H2SO4

e) 2Mg+O2+2MgO

Which substance is a product of a fermentation reaction? a - glucose b - zymase c - ethanol d - water

You are provided with a beaker, wire, two nails, battery, bulb and dilute soultions of HCl, HNO3, alcohol and glucose. How will you identify the acids from the given solutions using the given materials?

23 For a reaction at equilibrium, which change can increase the rates of the forward and reverse reactions?

Which of the following elements is most likely to form a covalent bond? A. K B. Mg C. Cu D. Br

If a new element were discovered and it was found to form 1 - ions, in which group would you place it in the periodic table?

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.