Answer:
Anything you want
Explanation:
Be yourself. Dont care about what other people think
Correct AnswerFourth Option, 2518 g
Solution:The formula of number of moles (n) in terms of mass of the compound(m) and molar mass of the compound (M) can be stated as:
We have the number of moles of Octane.
So,
n = 22.05 moles
We have the molar mass of octane.
So,
M=114.22 g/mol
Using these values in the above formula we can calculate mass of Octane (m).
Therefore, the mass of 22.05 moles of Octane is 2518 g.
<span>The normal dividing line for soluble/not soluble is 0.1 M.
If a substance, as a saturated solution at room temp and pressure, cannot form a solution concentration of 0.1 M, then it is considered insoluble.
The 0.1 M figure was selected because _most_ substances are either well above that value or well below. Some substances (calcium hydroxide is one? not sure) come close to the 0.1 M dividing line but there are only a very few.</span><span>
but most likely it wont mix</span>
The answer is B. The earth's axis is tilted so that the Northern Hemisphere faces the sun. Hope this helps and good luck! :)
Answer:
3.2 × 10³ J
Explanation:
Step 1: Given data
- Mass of the gold ring (m): 25 g
- Specific heat capacity of gold (Cp): 0.129 J/g.°C
- Initial temperature: 75 °C
- Final temperature: 1064 °C
Step 2: Calculate the temperature change (ΔT)
ΔT = 1064 °C - 75 °C = 989 °C
Step 3: Calculate the energy required (Q)
We will use the following expression.
Q = Cp × m × ΔT
Q = 0.129 J/g.°C × 25 g × 989 °C
Q = 3.2 × 10³ J