We can't use fossil fuels forever, someday we will run out of coal for example.
Answer:
1 mole of water requires 1 mole of hydrogen (H2) and 0.5 moles of oxygen (O2). This requires 100/18 moles of hydrogen. As the molar mass of hydrogen is 2, it requires 200/18 = 100/9 g of hydrogen. It requires 100/9 g of hydrogen gas and 800/9 g of oxygen gas to make 100 g of water.
100 g h = 50 moles hydrogen gas as weight of one mole of hydrogen gas is 2 ( mol. Weight of h is 1 and Hydrogen molecule gas 2 hydrogen.
So we will get 50 moles of water
2.5 moles O2
9
Answer:
when 1 kg ice change phase to water.
it absorb energy 3.34*10^5 j
Answer:
Cellular division has three main functions: (1) the reproduction of an entire unicellular organism, (2) the growth and repair of tissues in multicellular animals, and (3) the formation of gametes (eggs and sperm) for sexual reproduction in multicellular animals.