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WITCHER [35]
3 years ago
12

What is an independent variable

Chemistry
1 answer:
frez [133]3 years ago
4 0

Answer:

a variable (often denoted by x ) whose variation does not depend on that of another.

Explanation:

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Different isotopes of the same element must have a different
Naddika [18.5K]
Different isotopes of the same element must have a different mass number
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Calculate the χacetone and χcyclohexane in the vapor above the solution. p°acetone = 229.5 torr and p°cyclohexane = 97.6 torr.
Ulleksa [173]
First calculate the mole fraction of each substance:
Acetone: 2.88 mol ÷ (2.88 mol + 1.45 mol) = 0.665
Cyclohexane: 1.45 ÷ (2.88 mol + 1.45 mol) = 0.335
Raoult's Law: P(total) = P(acetone) · χ(acetone)  + P(cyclohexane) · χ(cyclohexane).
P(total) = 229.5 torr · 0.665 + 97.6 torr · 0.335
P(total) = 185.3 torr
χ for acetone: 229.5 torr · 0.665 ÷ 185.3 torr = 0.823 
χ for cyclohexane:  97.6 torr · 0.335 ÷ 185.3 torr = 0.177
7 0
3 years ago
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__C8H18(I) + __ O2(g) —> __Co2(g) + __H2O(g) Balance out the equation
Ymorist [56]

Answer:

2C8H18(l) + O2(g)--->CO2(g)+H2O

3 0
2 years ago
Helpppppppppppppppp?
Ivenika [448]

Answer: A

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Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. The o
liberstina [14]

Answer: Molar concentration of the tree sap have to be 0.783 M

Explanation:

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

\pi=iCRT

where,

\pi = osmotic pressure of the solution = 19.6 atm

i = Van't hoff factor = 1 (for non-electrolytes)

R = Gas constant = 0.0821\text{ L.atm }mol^{-1}K^{-1}

T = temperature of the solution = 32^oC=[273+32]=305K

Putting values in above equation, we get:

19.6atm=1\times C\times 0.0821\text{ L.atm }mol^{-1}K^{-1}\times 305K

C=0.783M

Thus the molar concentration of the tree sap have to be 0.783 M to achieve this pressure on a day when the temperature is 32°C

4 0
3 years ago
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