Answer:
hey...
Explanation:
Sodium carbonate (Na2CO3), also known as washing soda, can soften both temporary and permanent hard water.
Answer: Correct statements are given below:
1) In activity series elements are listed according to their reactivity.
2) Nuclear reaction in which low atomic nuclei fuse to form a heavier nucleus with the release of energy. Nuclear fusion reaction occurs in the sun.
3) C3H8 + 5O2 → 3CO2 + 4H2O is the example of a combustion reaction.
4) 2Fe + O2 → 2FeO is the example of synthesis reaction. In synthesis reaction is a type of reaction in which two reactants combine to form a single product.
Their molecules move at different speeds
n = m/M = 2/18 = 1/9 ~0,1 mol
I think it’s 1 mole
If Iam not mistaken