C-14 has 2 more neutrons than C-12
C-14
6 protons
8 neutrons
C-12
6 protons
6 neutrons
Atomic mass Ar => 39.948 a.m.u
39.948 g --------------- 6.02x10²³ atoms
?? g -------------------- 3.8x10²⁴ atoms
(3.8x10²⁴) x 39.948 / 6.02x10²³ => 250 g
hope this helps!
I believe that this atom is chlorine and the atom has an overall charge of zero.
Chlorine is chemical element which is atomic number 17 in the periodic table. Each chlorine atom has 17 protons (positively charged) in the nucleus balanced by 17 electrons (negatively charged) in the energy shells ( thus an overall charge of zero)
Hello!
The reaction that the graph represents is
A. Exothermic because Hrxn=-167 kJTo calculate Hrxn we apply the following equation:
Looking at the graph, and at the result of the calculations, we can see that the enthalpy of the products is
lower than the enthalpy of the reagents, because the sign is negative. That means that the reaction
releases energy in the form of heat and that the reaction is
exothermic.
Have a nice day!
Answer:
H---H and Cl---Cl bonds are broken and H---Cl bonds are formed.
Explanation:
The reaction between Hydrogen and Chlorine to produce HCl is:
⇒
In this reaction the reactants are and .
The product is HCl.
The bonds existing in the reactants are
1) H---H bond in (Non polar and covalent bond)
2)Cl---Cl bond in ( Non polar and covalent bond)
The bonds existing in product is/are:
1)H---Cl bond in HCl (Polar and covalent bond)
So all the chemical bonds in the reactants are broken to produce the chemical bonds in the products
In other words,
The H---H bonds and Cl---Cl bonds are broken to produce H---Cl bonds.