<span>The mass of an atom comes from
the protons and neutrons that are found in the nucleus. The number of protons
is the atomic number of an element. To find the number of neutrons, subtract
the atomic number from the mass of an atom. So, if an atom is missing a neutron
or has an extra neutron, the atom is called an isotope. An atom is still the
same element if it is missing an electron. That is also true for isotopes. They
are the same element but their number of neutron differs.</span>
Answer:
Single Displacement Reaction, balanced
Explanation:
Generally written as:
C + H₂O => CO + H₂
This type of reaction is single displacement because the difference between the reactant and product side is that one element has changed its "pairing".
The skeleton formula for single displacement is AB + C => AC + B.
The equation is balanced because the reactants and products have the same number of atoms.
1000 g of feathers is the least dense
Answer:
Increased heat,increased pressure,or the use of nuclear catalyst.
Answer: (a) The solubility of CuCl in pure water is .
(b) The solubility of CuCl in 0.1 M NaCl is .
Explanation:
(a) Chemical equation for the given reaction in pure water is as follows.
Initial: 0 0
Change: +x +x
Equilibm: x x
And, equilibrium expression is as follows.
x =
Hence, the solubility of CuCl in pure water is .
(b) When NaCl is 0.1 M,
,
,
Net equation:
= 0.1044
So for,
Initial: 0.1 0
Change: -x +x
Equilibm: 0.1 - x x
Now, the equilibrium expression is as follows.
K' =
0.1044 =
x =
Therefore, the solubility of CuCl in 0.1 M NaCl is .