Escriba las fórmulas de los siguientes compuestos iónicos:

A) óxido de sodio

B) sulfuro de hierro (que contenga el ion Fe 2+)

C) Sulfato de cobalto (que contenga los iones Co 3 + y SO 2 - (arriba) y 4 (abajo)

D) Fluoruro de bario

Ayúdenme, por favor!

The buildup of lactic acid in muscles causes pain during extreme physical exertion. the ka for lactic acid (c2h5ocooh) is 8.4 * 10-4. calculate the ph of a 0.06 m solution of lactic acid. 1. 2.297 2. 11.851 3. 2.174 4. 2.043 5. 2.149 6. 6.348 7. 1.

All magnetic minerals will have the element iron in the chemical composition true or false

Electricity can be produced through the turbine of a nuclear reactor which will then go through a generator and finally transfer through to our homes. True or False?

Which of the following would be the best reason to use titration for monitoring the effects of acid rain on drinking water?

Draw the mechanism for the reaction of an alkyl halide with sodium azide, followed by reduction. follow the directions on each step.

Why can two igneous rocks have the same minerals but different names?

Where do the heaviest elements in our solar system come from?

Four students presented different analogies to describe the formation of an ionic bond. Student A: A tug of war between seven middle school students and a high school student Student B: A small dog and a big dog tugging at a bone with equal strength

Chemical reactions occur when molecules or atoms collide so that the bonds between atoms break and new bonds form. breaking the bonds of the reactants requires energy; whereas, bond formation releases energy.

Calculate the volume of a 0.323-mol sample of a gas at 265 K and 0.900 atm.