The balanced chemical reaction that would occur here would be:
7O2 + 2 Cl2 --> 2 Cl2O7
To determine the moles of oxygen that is needed in the system, we use the given amount of the product that is needed to be produced. Then, we use the relation from the balanced reaction to relate the product and one of the reactants. We do as follows:
moles Cl2O7 = 60.7 mol
moles O2 = 60.7 mol Cl2O7 ( 7 mol O2 / 2 mol Cl2O7 )
moles O2 = 212.45 mol O2
Therefore, about 213 moles of oxygen gas is needed in order to producr 60.7 moles of dichlorine heptoxide.
Answer:
Great question!The color of grass leaves (usually green) is mostly due to the absorbance of the other wavelengths of visible light by chlorophyll. Therefore, any differences in gene expression (that ultimately determine phenotype) that affect the concentration of chlorophyll in the leaf will, in turn, affect the color of that leaf. My guess is that, in the absence of light, you could still measure chlorophyll concentration, and assume what the color would be. However, you need transmitted (reflected) light in order to perceive color. I don't know, if a tree falls in the forest, and none is around to hear it, does it make a sound? Hope this helps. Keep the questions coming!
Explanation:
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The molarity of ethanol in the solution is 0.217 M
<h3>Further explanation</h3>
Given
1% by mass
density = 0.996 g/ml
Required
The molarity
Solution
mass/ml of Ethanol :
1% x 0.996 g/ml = 0.00996 g/ml
For 1 L solution :
0.00996 g/ml x 1000 ml/L = 9.96 g/L
Convert to mol/L(MW ethanol=46 g/mol) :
9.96 g/L : 46 g/mol= 0.217 mol/L = 0.217 M
Or you can use equation :
It is a statement of fact. explains how energy is produced, and describes the behavior of energy.
Answer:
Q = -3980.9 j
Explanation:
Given data:
Mass of sample = 30 g
Initial temperature = 56.7 °C
Final temperature = 25 °C
Specific heat of water = 4.186 j/g.°C
Amount of heat released = ?
Formula:
Q = m.c.ΔT
Q = heat released
m = mass of sample
c = specific heat of given sample
ΔT = change in temperature
Solution:
ΔT = T2 -T1
ΔT = 25 °C - 56.7 °C = - 31.7°C
Q = m.c.ΔT
Q = 30 g × 4.186 j/g.°C × - 31.7°C
Q = -3980.9 j
