It is a subscript
Also do you mean Cl not Ci. I assume you do because then it means 4 chlorine in that compound.
Explanation:
First, we need to calculate the number of moles of sodium carbonate we have in a 25 g sample. To calculate this, we will
find the molar mass of sodium carbonate (Na2CO3):
⇒ 2 × Molar mass of sodium + Molar mass of carbon + 3×molar mass of oxygen
⇒ 2 × 23 + 12 + 3 × 16
⇒ 46 + 12 + 48
⇒ 106g/mol
Thus, the molar mass of Na2CO3 is 106g/mol.
Therefore, number of moles = 25 ÷ 106
=> 0.2358 mol
Now, we know that every mole of Na2CO3 have 0.2358 moles of Na+ ions. Hence, total moles of Na2CO3 is 0.4716 moles
Number of ions present = 6.022 × 1023 × 0.4716 mol = 2.84 × 1023ions
Explanation:
Chemical properties are those properties that tells us about what a substance can do as regards to whether or not the substance reacts with other substances.
- Chemical properties are a function of the electrons contained in an atom and how they interact with other atoms.
- Examples of chemical properties are:
- Flammability
- Rusting of iron
- Precipitation
- Decomposition of water by an electric current
Learn more:
Chemical change brainly.com/question/9388643
#learnwithBrainly
Notice the subscript went from 83 to 84 and the 214 stayed the same that means it was beta decay.
Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. ... In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
