1.5 g of a coal sample is kept in the bomb of a calorimeter. The initial and final temperatures of water in bucket are 23 and 28 0c respectively. The bucket wash is titrated against n/10 na2co3 and the titer value is 2.5 ml. Sulphur content in the coal is 2 %. Parr 45c10 ni-cr wire is used to ignite the coal sample and 4 cm of the wire is fused. The water equivalent of the calorimeter is 2402 cal per oc. Hydrogen content of the coal sample is 8 %. Calculate the hhv and lhv of the coal sample
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Answer:
The following are the physical properties of metal :
The physical properties make them useful for many purposes. For e.g. Copper is used in making electric wires, gold is used to make jewellery, stainless steel is used to make pots, pans, etc
Metals react with nonmetals to form ionic bonds. For e.g. Sodium Chloride (NaCl)
Metals are a good conductor of electricity which means that they can conduct electricity due to the free moving electrons present in them. Copper is used as wiring as it is a good conductor of electricity.
Metals have high melting points and high boiling points as they have strong metallic bonds.
All metals are physically lustrous. They have a lustre that makes them shine. Gold is used for making jewellery.
Metals are hard, they can’t be broken easily and require a lot of energy and strength to break. Iron is used to make cars, buildings, ships, etc.
Metals weigh a lot as they have a high density. Metals are heavy for their size.
They don’t have flexibility and have tensile strength. Metals can’t be stretched.
I hope this will be help you.