<h2>Answer with Explanation</h2>
This hypothesis concludes that the sugar dissolves faster in warm solution has to do with increased molecular motion because the combined power in the warm solution makes molecules in water to travel quicker and sucrose molecules to fluctuate faster which produced a continued evolution favors to make the connections between sucrose molecules easier to succeed. The collisions between the water molecules and the sugar molecules are at a high rate due to increased temperature.
The answer is true . hope this helps!
<u>Answer:</u> This element has +2 charge on it.
<u>Explanation:</u>
An ion is formed when an atom looses or gains electrons.
- When an atom looses electrons, it leads to the formation of positive ion known as cation.
- When an atom gains electrons, it leads to the formation of negative ion known as anion.
Magnesium is the 12th element of the periodic table having electronic configuration of 
This element will loose 2 electrons to attain stable electronic configuration and leads to the formation of a cation having formula 
Hence, this element has +2 charge on it.
Answer:
The given isotope is Br 80
If 35 protons present then its atomic number is 35
Mass number is 80 so its meutrons are 45 because proton+ neutron = mass number
Its electron are 36 because of negative one charge
Explanation:
The important thing to notice here is that the reaction takes place at STP conditions, which are defined as a pressure of
100 kPa
and a temperature of
0
∘
C
.
Moreover, at STP one mole of any ideal gas occupies exactly
22.7 L
- this is known as the molar volume of a gas at STP.
Since all the gases are at the same conditions for pressure and temperature, the mole ratios become volume ratios.
To prove this, use the ideal gas law equation to write the number of moles of hydrogen gas and of chlorine gas as
P
V
=
n
R
T
⇒
n
=
P
V
R
T
For hydrogen, you would have
n
hydrogen
=
P
⋅
V
hydrogen
R
T
and for chlorine you have
n
chlorine
=
P
⋅
V
chlorine
R
T
Thus, the mole ratio between hydrogen and chlorine will be
n
hydrogen
n
chlorine
=
P
V
hydronge
R
T
⋅
R
T
P
⋅
V
chlorine
=
V
hydrogen
V
chlorine
The same principle applies to the mole ratio that exists between hydrogen and hydrogen chloride.
So, the balanced chemical equation for this reaction is
H
2(g]
+
Cl
2(g]
→
2
HCl
(g]
Notice that you have a
1
:
2
mole ratio between hydrogen gas and hydrogen chloride.
This means that the reaction will produce twice as many moles as you the number of moles of hydrogen gas that reacts.
Use the volume ratio to find what volume of hydrogen chloride will be produced by the reaction
4.9
L H
2
⋅
2
L HCl
1
L H
2
=
9.8 L HCl
Now use the molar volume to find how many moles you'd get in this volume of gas at STP
9.8
L HCl
⋅
1 mole HCl
22.7
L HCl
=
0.4317 moles HCl
Finally, use hydrogen chloride's molar mass to find how many grams would contain this many moles
0.4317
moles HCl
⋅
36.461 g
1
mole HCl
=
15.74 g
Rounded to two sig figs, the answer will be
m
HCl
=
16 g
