Complete as seguintes equações e indique os pares de ácido 1 base 1 e ácido 2 base 2 a) HNO2 + H2O b) H2PO-4 + H30 - C) C6H5 - NH3 + OH - d) CH3NH3 + H2O

What are the minimum body weight required of blood donors?

What are some advantages of using less farm machinery in planting?

The average atomic mass listed in the periodic table indicates the mass of the

What is carrying capacity? A: the maximum number of species that can live together in an area B: the maximum population that can be supported in an area C: the maximum population that can reproduce in an area D: the maximum number of predators that

If i have 4 moles of a gas ata pressure of 5.2 atm and a volume of 15 liters, what is the temperature?

Sodium and chlorine can bond together. sodium gives chlorine a needed electron. what is chlorine's charge after accepting the electron?

What astronomical equiptment did hypatia use?

Name each activity or observation as either physical or chemical change. 1) Boiling water for pasta 2) Digesting food 3) Soda goes "flat" 4) Stretching a rubber band 5) Grilling a hamburger 6) Adding sugar to tea 7) Adding lemon to tea 8) Mowing the

Ironing a shirt is an example of ... convection conduction radiation condensation

Which compound conducts electricity only in the molten state? A. sodium bromide B. calcium hydroxide C. barium sulfate D. magnesium sulfate