All categories

3 years ago

What are the 5 energy changes that occur when you light a firecracker?

Chemistry

1 answer:

Slav-nsk [51]3 years ago

8 0

Light,heat,fire,explosions

You might be interested in

What is The atomic sublevel with the next highest energy after 4p is

cluponka [151]

Answer:

Explanation:

The atomic sublevel with the next highest energy after the 4p is 5s.

Based on Aufbau's principle; the sublevels with lower energies are filled up before those with higher energies.

Sublevels do not fill up based on numerical order. The pattern of filling is shown as:

1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p

5 0

3 years ago

A concentration cell is constructed using two Ni electrodes with Ni2+ concentrations of 1.0 M and 1.00 � 10�4 M in the two half-

Komok [63]

Answer: The cell potential of the cell is +0.118 V

Explanation:

The half reactions for the cell is:

Oxidation half reaction (anode): $Ni(s)\rightarrow Ni^{2+}+2e^-$

Reduction half reaction (cathode): $Ni^{2+}+2e^-\rightarrow Ni(s)$

In this case, the cathode and anode both are same. So, $E^o_{cell}$ will be equal to zero.

To calculate cell potential of the cell, we use the equation given by Nernst, which is:

$E_{cell}=E^o_{cell}-\frac{0.0592}{n}\log \frac{[Ni^{2+}_{diluted}]}{[Ni^{2+}_{concentrated}]}$

where,

n = number of electrons in oxidation-reduction reaction = 2

$E_{cell}$ = ?

$[Ni^{2+}_{diluted}]$ = $1.00\times 10^{-4}M$

$[Ni^{2+}_{concentrated}]$ = 1.0 M

Putting values in above equation, we get:

$E_{cell}=0-\frac{0.0592}{2}\log \frac{1.00\times 10^{-4}M}{1.0M}$

$E_{cell}=0.118V$

Hence, the cell potential of the cell is +0.118 V

5 0

3 years ago

The addition of a catalyst in a chemical reaction

malfutka [58]

The addition of catalyst in a chemical reaction has 2 functions
1. if you add negative catalyst then the rate of chemical reaction decreases
2. if you add positive catalyst then the rate of chemical reaction increases.

6 0

4 years ago

What caused the deflection of the alpha particles in rutherford's gold foil experiment?

andrew-mc [135]

The nucleus in the atoms if gold deflected the alpha particles.

4 0

3 years ago

the word property can refer to a characteristic, such as a characteristic of a layer of the suns atmosphere. what is another mea

olganol [36]

Answer:

property can also refer to a belonging or someone's property/items

3 0

3 years ago