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3 years ago

Which type of reaction does this diagram represent?

Chemistry

2 answers:

Mice21 [21]3 years ago

8 0

I want to say addition. But I have a tendency to be wrong

tensa zangetsu [6.8K]3 years ago

7 0

Answer: addition

Explanation: Addition: A reaction is one in which a molecule adds to another molecule to form a single product.

Condensation: A reaction in which molecules combine to form products along with the formation of a small molecule called as byproduct.

Elimination: A reaction in which small molecules are eliminated when a certain substance is made to react.

Substitution: A reaction in which one substance replaces another substance.

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Rashid [163]

Answer:

C. If a solar cell breaks, it releases chemicals and can harm humans.

Explanation:

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3 0

2 years ago

Can someone who expert in chemistry be my personal tutor? I'm so desperate

lions [1.4K]

Yes..? I don’t understand what you’re trying to ask mate.

5 0

3 years ago

A small portion of a crystal lattice is sketched below. What is the name of the unit cell of this lattice? Your answer must be a

Nikolay [14]

This is an incomplete question, the given sketch is shown below.

Answer : The name of given unit cell is, FCC (face-centered cubic unit cell)

Explanation :

Unit cell : It is defined as the smallest 3-dimensional portion of a complete space lattice which when repeated over the and again in different directions produces the complete space lattice.

There are three types of unit cell.

SCC (simple-centered cubic unit cell)
BCC (body-centered cubic unit cell)
FCC (face-centered cubic unit cell)

In SCC, the atoms are arranged at the corners.

$Z=\frac{1}{8}\times 8=1$

The number of atoms of unit cell = Z = 1

In BCC, the atoms are arranged at the corners and the body center.

$Z=\frac{1}{8}\times 8+1=2$

The number of atoms of unit cell = Z = 2

The given unit cell is, FCC because the atoms are arranged at the corners and the center of the 6 faces.

$Z=\frac{1}{8}\times 8+\frac{1}{2}\times 6=4$

The number of atoms of unit cell = Z = 4

Thus, the name of given unit cell is, FCC (face-centered cubic unit cell)

7 0

3 years ago

Why do commercial airliners encounter very little turbulence above 25,000 feet?

Nesterboy [21]

Answer:

Water vapor has mostly disappeared at colder elevations and its effect on weather turbulence.

Explanation:

3 0

2 years ago

A 10.000g ice cube is added to 100.000g of water at 80.0 oC in a calorimeter. The final temperature of the water in the calorime

Ket [755]

Answer: The amount of heat needed to melt the ice cube is 6.083 kJ

Explanation:

The processes involved in the given problem are:

$1.)H_2O(s)(0^oC,273K)\rightarrow H_2O(l)(0^oC,273K)\\2.)H_2O(l)(0^oC,273K)\rightarrow H_2O(l)(65.5^oC,338.5K)$

For process 1:

To calculate the amount of heat required to melt the ice at its melting point, we use the equation:

$q_1=m\times \Delta H_{fusion}$

where,

$q_1$ = amount of heat absorbed = ?

m = mass of ice = 10.000 g

$\Delta H_{fusion}$ = enthalpy change for fusion = 334.16 J/g

Putting all the values in above equation, we get:

$q_1=10.000g\times 334.16J/g=3341.6J$

For process 2:

To calculate the heat required at different temperature, we use the equation:

$q_2=mc\Delta T$

where,

$q_2$ = heat absorbed

m = mass of ice = 10.000 g

c = specific heat capacity of water = 4.184 J/g.°C

$\Delta T$ = change in temperature = $T_2-T_1=[65.0-0]^oC=65.5^oC$

Putting values in above equation, we get:

$q_2=10.000g\times 4.184J/g.^oC\times 65.5^oC\\\\q_2=2741.83J$

Total heat absorbed = $q_1+q_2$

Total heat absorbed = $[3341.6+2741.83]J=6083.43J=6.083kJ$

Hence, the amount of heat needed to melt the ice cube is 6.083 kJ

4 0

3 years ago