3- Responde verdadero o falso. Justifica respuestas falsas. a. Si una sustancia tiene ph 6,8 es neutra.

b. Si una sustancia tiene ph 5 es acida.

c. Si una sustancia tiene ph 7 es básica.

d. Si una sustancia tiene ph 3 es básica.

e. Si una sustancia tiene ph 7 es neutra

f. Si una sustancia tiene pH 8 es básica.

4- Dar dos ejemplos de sustancia acida y dos ejemplos de sustancia básica.

Ayud​

What reaction is taking place? 02 + c3h8 = h20 + co2

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Insoluble sulfide compounds are generally black in color. which of the following combinations could yield a black precipitate? check all that apply. na2s(aq)+kcl(aq) li2s(aq)+pb(no3)2(aq) pb(clo3)2(aq)+nano3(aq) agno3(aq)+kcl(aq) k2s(aq)+sn(no3)4(aq)