B. A Lead(II) carbonate was heated strongly in a crucible. A
colourless gas was evolved and a yellow residue was left
behind in the crucible. Some carbon powder was added
to the yellow residue and the mixture heated again. At
the end of the reaction, shiny globules were obtained.
ari Name the yellow residue.
(üy Name the colourless gas.
ü What chemical test would you carry out to
confirm the identity of the gas?

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

the correct answer would be d. hope this !