Answer:
the answer is mixtures.
Explanation:
mixtures can be separated physically. elements like the ones on the periodic table cannot be further broken down. compounds are bonds between two or more elements and can only be broken down chemically.
A pure substance, any compound or element, can't be separated into different atoms by physical methods. A chemical reaction must occur to separate a compound into its different atoms/elements.
Answer:
-12 258 kJ
Step-by-step explanation:
Reaction 1: C₃H₈(g)+5O2(g) ⟶ 3CO₂(g)+ 4H₂O(g); ΔH₁ = - 2 043 kJ
Reaction 2: 6C₃H₈(g)+30O2(g) ⟶ 18CO₂(g)+ 24H₂O(g); ΔH₂ = -12 258 kJ
Reaction 2 is Reaction 1 multiplied by 6.
ΔH is an extensive property, so you must also <em>multiply ΔH by 6</em>.
What i'm English i do not know what are you talking about
Answer:
0.51M
Explanation:
Given parameters:
Initial volume of NaBr = 340mL
Initial molarity = 1.5M
Final volume = 1000mL
Unknown:
Final molarity = ?
Solution;
This is a dilution problem whereas the concentration of a compound changes from one to another.
In this kind of problem, we must establish that the number of moles still remains the same.
number of moles initially before diluting = number of moles after dilution
Number of moles = Molarity x volume
Let us find the number of moles;
Number of moles = initial volume x initial molarity
Convert mL to dm³;
1000mL = 1dm³
340mL gives
= 0.34dm³
Number of moles = initial volume x initial molarity = 0.34 x 1.5 = 0.51moles
Now to find the new molarity/concentration;
Final molarity =
=
= 0.51M
We can see a massive drop in molarity this is due to dilution of the initial concentration.
Answer:
The Coriolis Effect can be seen in action in the general circulation of the atmosphere. The winds at all latitudes to the north of 0° deflect to the right of their intended path in the Northern Hemisphere. The Coriolis Effect does not impact the wind speed
Explanation