Which of the following is a precipitation reaction?
a. hcl(aq) + koh(aq) → kcl(aq) + h2o(l)
b. 2 nai(aq) + hg2(no3)2(aq) → hg2i2(s) + 2 nano3(aq)
c. zn(s) + 2 agno3(aq) → 2 ag(s) + zn(no3)2(aq)
d. kcl(aq) + lii(aq) → ki(aq) + licl(aq)
e. none of the above is a precipitation reaction.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma