Answer:
Ni C03 ---> CO2 + NiO
Explanation:
Ni C03 ---> CO2 + NiO
When heating nickel carbonate at elevated temperatures, 400 ° C for example, decomposes giving as products carbon dioxide and nickel oxide.
Answer:
Stir the Mixture.
Explanation:
Stirring, or agitation helps to disperse the particles of sugar throughout the water, which is another way of increasing the surface area of the sugar and accelerating the time it takes to dissolve.
Hope this helps good luck! :D
Answer:
Explanation:
Regardless of the type of gas, 1 mole at standard temperature and pressure (STP) occupies a volume of 22.4 liters. In this case the gas is helium (He).
We can set up a ratio.
Multiply by the given number of moles.
The moles of helium will cancel.
Multiply.
5.25 moles of helium gas at STP is 117.6 liters of helium.
the number of atom present in the molecule is given by the Avogadro number that is 6.022×10²³ . For the CO2 , the molecule is made of 3 atom .So for the one mole of CO2 there are 1.8066×10²⁴ atom.