IONIC BONDING: this occurs between metal and nonmetal atoms. It occurs as a result of electron transfer from one atom to another.
<u>Example</u>: NaCl is an ionic compound (between a metal, Na, and a nonmetal, Cl)
POLAR COVALENT: 2 atoms share bonded pairs of electrons sort of unequally. Electrons in a polar covalent bond are more attracted to one atom than the other atom. This type of bonding occurs between nonmetals.
<u>Example</u>: HF has polar covalent bonds
NONPOLAR COVALENT: occurs between nonmetals atoms. this type of bonding occurs between atoms with almost the same electronegativity.
<u>Example</u>: N2
<u />
<span>A. insoluble solids in water
</span><span>C. solids of different sizes</span>
Complete Question
The complete question is shown on the first uploaded image
Answer:
The concentration of that should used originally is
Explanation:
From the question we are told that
The necessary elementary step is
The time taken for sixth of 0.5 M of reactant to react
The time available is
The desired concentration to remain
Let Z be the reactant , Y be the first product and X the second product
Generally the elementary rate law is mathematically as
Where k is the rate constant , is the concentration of Z
From the elementary rate law we see that the reaction is second order (This because the concentration of the reactant is raised to power 2 )
For second order reaction
Where is the initial concentration of Z which a value of
From the question we are told that it take 9 hours for the concentration of the reactant to become
So
=>
For
Answer and Explanation:
The molar mass of a substance is all of the weights from the elements combined.
So, we have the elements
CU, S, and
CU has a mass is 65
S mass is 32
O has a mass of 16, but there's 4 atoms of O, so we do 16 times 4, which is 64.
Now we add.
65 + 32 + 64 is 161.
<u>So, the answer is 160, or answer choice A.</u>
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
Answer:
→
Explanation:
→
On the left you have:
Na: 1
Br: 2
On the right you have:
Na: 1
Br: 1
To get the Br to be the same on both sides, you would multiple the NaBr by 2. Then, you will have 2 Na so you put a coefficient of 2 in front of the Na aswell.