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3 years ago

Can chlorine replace iodine?

Chemistry

1 answer:

Viktor [21]3 years ago

4 0

Answer:

The reactivity of the halogen group (group 17) decreases from top to bottom within the group. Fluorine is the most reactive halogen, while iodine is the least. Since chlorine is above bromine, it is more reactive than bromine and can replace it in a halogen replacement reaction.

Explanation:

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What volume is occupied by 2.33 miles of an ideal gas at 0.953 atm and 44°C

Viefleur [7K]

Answer:

6663.6

Explanation:

3 0

3 years ago

When a 3.80 g sample of C8H18(l) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 27.3 oC. The heat

Fudgin [204]

Answer: The enthalpy of the reaction is -5112.5 kJ/mol

Explanation:

To calculate the heat absorbed by the calorimeter, we use the equation:

$q=c\Delta T$

where,

q = heat absorbed

c = heat capacity of calorimeter = 6.18 kJ/°C

$\Delta T$ = change in temperature = 27.3°C

Putting values in above equation, we get:

$q=6.18kJ/^oC\times 27.3^oC=168.714kJ$

Heat absorbed by the calorimeter will be equal to the heat released by the reaction.

Sign convention of heat:

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of octane = 3.80 g

Molar mass of octane = 114 g/mol

Putting values in above equation, we get:

$\text{Moles of octane}=\frac{3.80g}{114g/mol}=0.033mol$

To calculate the enthalpy change of the reaction, we use the equation:

$\Delta E=\frac{q}{n}$

where,

q = amount of heat released = -168.714 kJ

n = number of moles = 0.033 moles

$\Delta E$ = enthalpy change of the reaction

Putting values in above equation, we get:

$\Delta E=\frac{-168.714kJ}{0.033mol}=-5112.5kJ/mol$

Hence, the enthalpy of the reaction is -5112.5 kJ/mol

4 0

3 years ago

Anyone know how to do this?

Sergeu [11.5K]

It’s kind of blurry

8 0

3 years ago

Which of the two substances would have a higher melting point: O2 or quartz (SiO2)n? Explain your answer.

sesenic [268]

Answer:

quartz (SiO2)n

Explanation:

Melting point is defined as the temperature or point at which the substances change its state from solid to liquid.

Quartz (SiO2)n has high melting point than O2 because Quartz (SiO2)n is found in the form of hard, crystalline mineral that is made up of silicon and oxygen atoms having strong covalent bonds between all the atoms. So, a lot of energy is required to break the bond between the atoms and it has a high melting point.

Hence, the correct answer is quartz (SiO2)n.

7 0

3 years ago

During the combustion of a peanut that weighed 0.341 g, the temperature of the 100 mL of water in the calorimeter rose from 23.4

blondinia [14]

Answer:

119 kCal per serving.

Explanation:

The heat energy necessary to elevates water's temperature from 23.4°C to 37.9°C can be calculated by the equation below:

Q = mcΔT

Q: heat energy

m: mass in g

c: specific heat capacity in cal/g°C

ΔT = temperature variation in °C

m is the mass of water, considering the density of water to be 1g/mL, 100 mL of water weights 100g. Therefore:

Q = 100 g x 1.00 cal/g°C x (37.9 - 23.4)°C

Q = 1450 cal

1450 cal ____ 0.341 g peanuts

x ____ 28 g peanuts

x = 119061.58 cal

This means that the cal from fat per serving of peanuts is at least 119 kCal.

3 0

3 years ago