ANSWER
The number of protons in an atom of N-15 is 7
<u>STEP-BY-STEP EXPLANATION:</u>
Firstly, we need to define an isotope
Isotopes are two or more atoms that have the same atomic number and position in the periodic table but different mass numbers due to differences in the number of neutrons.
Recall that, atomic number = no of proton
Since the isotopes of nitrogen are N-14 and N-15
The atomic number of nitrogen is 7 according to its position in the periodic table
Hence, the number of protons in an atom of N-15 is 7
Ok so basically you take an Ionic table and see if the charges for each compound cancel each other out. If they dont, add a subscript so the negative and positive charges cancel each other out. Then check of there is the same number of molecules on each side of the equation. i.e. nacl + cu-> cucl2 +na
On the product side there is 2 more chlorine than on the reactant side. so you would put a number in from of each compound until there is the same number of every molecule on all sides. i.e. 2nacl + cu -> 2na+ cucl2
The strongest bond strength is of HCCH (Ethyne), then comes H₂CCH₂ (Ethene) and H₃CCH₃ (Ethane) has the least bond strength as compare to Ethyne and Ethene.
HCCH > H₂CCH₂ > H₃CCH₃
Strongest ----------------------------------------------> Weakest
Explanation:
Ethyne has triple bond, one sigma bond and two pi bonds, Hence, a greater overlap is found between two carbon atoms which resulted in shortening the bond length (i.e 1.9 Angstrome). Also carbon carbon triple bond has highest force constant value i.e 15 ×10⁵ dyne/cm which is greater than carbon carbon double bond (10 ×10⁵ dyne/cm) and single bond (5 × 10⁵ dyne/cm).
The correct answer would be option 3. I order for a single displacement to occur there must be a single element and one compound. From then, the single element will then swap places with one of the elements in the compound (or in this case single circle and combined circles). Hope this helped!
Answer:
It is a chemical reaction because total mass remain unchanged.
Explanation:
A chemical reaction is represented by a chemical equation which show the reactant and products. Reactants are written on left side of arrow while products are written on right side. The number of atoms are remain same however arrangement of atoms is different on both side.
For example:
6H₂O + 6CO₂ + energy → C₆H₁₂O₆ + 6O₂
it is known from balanced chemical equation that 6 moles of carbon dioxide react with the six moles of water and created one mole of glucose and six mole of oxygen. The number of atoms are same on both side however arrangement of atoms is different.
While in case of nuclear reaction small change in mass take place.
