Answer:
Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.
Explanation:
It is really very important to know where the safety equipments are placed in lab because when we know it then accident wont occur in lab . it will also helps us to feel secure while doing any kinds of experiment
Answer:
50%
Explanation:
% yields =(experimental yields / theoretical yields ) x100%
= 122.1÷ 245.6 ) x100% = 50%
Answer:
Convection
Explanation:
Convection is the transport of heat by a fluid like air or water.
Hot air is less dense than cold air, so hot air rises and cold air sinks.
In weather, convection refers to the vertical transfer of heat and moisture from the surface to a cooler area aloft.
Conduction is wrong. It involves the movement of heat by collision of molecules.
Radiation is wrong. It does not need a medium to transfer the heat.