Answer:
the fastest would be gas, liquid would be in the middle and solid would be the slowest
Explanation:
Sharon earns $25 per item. This means that this number is increasing with each item sold, then you will have a variable with this number, such as 'x'.
Plus a base salary of $100 per week. This means that this number is always true for each week and will not change when looking at a weekly perspective.
How many items must she sell to earn at least $700 per week. This is the end goal or even slightly over $700.
To set it up:
25x + 100 ≥ 700
To solve:
25 x + 100 ≥ 700
- 100 -100
______________
25x ≥ 600
___ ___
25 25
_______________
x ≥ 24
Interpret:
Sharon must sell at least 24 items.
Answer:
2 ?
Explanation:
(Molar mass of S2Cl2 = 135.036 g/mol)
Eq. wt. of S in S2
Cl
2
= 2×35.5
2×32×35.5 =32g
Eq. wt. of S in SCl
2 =
2×35.5
32×35.5 =16g
So, their ratio is 2.
1. polarity
2. hydrophobic
3. cohesion
4. hydrophilic
5. surface tension
Mass of Zn = 0.103 g
Volume of HCl (V) = 50.0 ml
Density of solution (D) = 1.00 g/ml
Mass of HCl = D*V = 1.00 g/ml * 50.0 ml = 50.0 g
initial temp T1 = 22.5 C
Final temp T2 = 23.7 C
specific heat c = 4.18 J/g C
The heat (Q) required to raise the temp is given as:
Q = mcΔT = mc(T2-T1)
= (0.103+50)g * 4.18 J/g C * (23.7-22.5) C = 251.3 J = 0.2513 kJ
To find ΔH in kJ/mol
# moles of Zn = mass of Zn/Atomic mass = 0.103/65.39 = 0.00158 moles
a) ΔH = 0.2513 kJ/0.00158 moles = 159.05 kJ/mol
b) A calorimeter is an isolated system where there is no exchange of heat/energy.
Work done is given as: W = PΔV
since ΔV = 0, as the volume remains constant
W = 0