when silica is heated with Na²CO³ we get which on cooling gives a glassy mass known as because it is in water. option -->( carbon dioxide , glass, in soluble), ( sodium silicate, water glass, in soluble),( sodium silicate, water glass, soluble ), carbon dioxide, glass, soluble)

idk

explanation:

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

here are the traits of a good leader.i'm not going to give you the examples so you can copy right it.that's illegal but i hope that this you out.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.