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DIA [1.3K]
3 years ago
13

Post-Lab Questions

Chemistry
1 answer:
Svet_ta [14]3 years ago
7 0

Answer:

1. not enough dye was added to the drink.

The wrong dye was added to the drink

the water in the drink is evaporating

2. Changing the compound changes the absorbance behavior.

3. Measure the absorbance for the same solution in different cuvette sizes and find the y-intercept.

Explanation:

When the beverage company adds dye to the drink, there should be standard quantity added to the drink so that the color of the drink remains constant. When too much dye is added to the drink, the color will get dark brown or black. When the color of drink get lighter than green this means dye is not added in required quantity.

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a scuba tank has a pressure of 195 atm at a temperature of 10 degree Celsius. The volume of the tank is 350 L. How many moles of
larisa86 [58]
To determine the number of moles of air present in the tank, we assume that air is an ideal gas in order for us to use the following equation,
                                        n = PV/RT
Substituting the known values,
                        n = (195 atm)(350 L) / (0.0821 L.atm/mol.K)(10 + 273.15 K)
                                        n = 2935.91 moles
Thus, the number of moles of air is approximately 2935.91 moles. 
8 0
4 years ago
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Where photosynthesis takes place?
Vlad [161]

Answer:

chloroplasts

Explanation:

3 0
4 years ago
The radius of a spherical aluminum atom is 140 picometers. How many aluminum atoms could be lined up across a length of 27.9 cm.
Karo-lina-s [1.5K]

Answer:

9.96 × 10⁸

Explanation:

Step 1: Calculate the diameter of 1 aluminum atom

The diameter of a sphere is 2 times the radius.

d = 2 × 140 pm = 280 pm

Step 2: Convert "d" to m

We will use the conversion factor 1 m = 10¹² pm.

280 pm × 1 m/10¹² pm = 2.80 × 10⁻¹⁰ m

Step 3: Convert the total length (L) to m

We will use the conversion factor 1 m = 100 cm.

27.9 cm × 1 m/100 cm = 0.279 m

Step 4: Calculate the number of atoms of aluminum required

We will use the following expression.

L/d = 0.279 m/2.80 × 10⁻¹⁰ m = 9.96 × 10⁸

5 0
3 years ago
What is the enthalpy of combustion per mile of c2h2(g)
julsineya [31]

Answer:

he heat of combustion per mole for acetylene, C2H2(g), is -1299.5 kJ/mol.

Explanation:

products are CO2(g) and H2O(l), and given that the enthalpy of formation is -393.5 kJ/mol for CO2(g) and -285.8 kJ/mol for H2O(l), find the enthalpy of formation of C2H2(g).

The heat of combustion per mole for acetylene, C2H2(g), is -1299.5 kJ/mol. Assuming that the combustion products are CO2(g) and H2O(l), and given that the enthalpy of formation is -393.5 kJ/mol for CO2(g) and -285.8 kJ/mol for H2O(l), find the enthalpy of formation of C2H2(g).

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3 years ago
In principle, at least one way to increase the concentration of G6P is to drive the equilibrium to the right by increasing the i
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Answer:

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Explanation:

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