Answer:
Sample 1 = liquid
Sample 2 = solid
Sample 3 = gas
Explanation:
Properties of gases:
Molecule of gases randomly move everywhere and occupy all available space.
Gases don't have definite volume and shape and take the shape and volume of container in which it present.
Their densities are very low as compared to the liquid and solids.
Gas molecules are at long distance from each other therefore by applying pressure gases can be compressed.
The very weak inter molecular forces are present between gas molecules.
Properties of Liquid:
Liquid have definite volume but don,t have definite shape.
Their densities are high as compared to the gases but low as compared to the solids.
In liquid, molecules are close to each other and have greater inter molecular forces as compared to the gas molecules.
Properties of solids:
Solids have definite volume and shape.
In solids molecules are tightly pack and very close to each other.
Their melting and boiling point are every high.
The densities of solids are also very high as compared to the liquid and gas.
There are very strong inter molecular forces are present between solid molecules.
Answer:
Check the explanation
Explanation:
1.
Kindly check the first image for the Synthesis reaction
2.
Kindly check the second image for the Single replacement reaction
3.
Kindly check the second image for the Double displacement reaction
Activation energy Enthalpy change
Synthesis reaction 45 KJ +35 KJ
Single replacement reaction 20KJ -35 KJ
Double replacement 65 KJ +50KJ
Answer:
Dubnium: Group 5 Period 7
Hydrogen: Group 1 Period 1
Explanation:
Answer:
I would go with the first option. It shows how people having been releasing more and more carbon dioxide into the atmosphere.
Explanation:
it shoudl be : 2Fe(NO3)3 + 3MgSO4 → 3Mg(NO3)2 + Fe2(SO4)3
(the difference is Fe2(SO4)3 has no coefficient)
