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Gekata [30.6K]
3 years ago
14

4) In a chemical change a _____________ substance forms.

Chemistry
2 answers:
Law Incorporation [45]3 years ago
8 0
A complex substance forms when a chemical change takes place
Snezhnost [94]3 years ago
4 0
The mass substance forms


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Do you expect the O---O bond in H2O2 to be longer or shorter than the O---O bond in O2?
melomori [17]

Answer : The O-O bond in H_2O_2 will be longer than the O-O bond in O_2.

Explanation :

In the H_2O_2, the two oxygen atoms are bonded by the single bond and in O_2, the two oxygen atoms are bonded by the double bond.

As we know, the bond strength of double bond is greater than the single bond.

And the relation between the bond strength and bond length is,

\text{ Bond strength}\propto \frac{1}{\text{ Bond length}}

That means the higher the strength, the shorter will be the bond length.

Hence, the bond length of single bond will be longer than the double bond.

The structure of given molecule is shown below.

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4 years ago
A cat runs 27 meters in 2 seconds. What is the velocity of the cat? (answer with up to 2 decimal places)
larisa86 [58]
Velocity = change in displacement/ change over time
V = 27/ 2 = 13.5m/s
3 0
3 years ago
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Which is the electron configuration for zinc?
FinnZ [79.3K]

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d10

3 0
2 years ago
Five gases combined in a gas cylinder have the following partial pressures: 3. 00 atm (N2), 1. 80 atm (O2), 0. 29 atm (Ar), 0. 1
Helen [10]

The total pressure of the gaseous mixture has been 5.37 atm. Thus, option D is correct.

The partial pressure has been defined as the pressure exerted by each gas in the mixture.

According to the Dalton's law of partial pressure, the total pressure of gas has been the sum of the partial pressure of the gases in the mixture.

The given partial pressure of gases in the mixture has been:

  • Partial pressure of Nitrogen, P_N_2=3\;\rm atm
  • Partial pressure of Oxygen, P_O_2=1.80\;\rm atm
  • Partial pressure of Argon, P_A_r=0.29\;\rm atm
  • Partial pressure of Helium, P_H_e=0.18\;\rm atm
  • Partial pressure of Hydrogen, P_H=0.10\;\rm atm

The total pressure of the gaseous mixture has been:

P=P_N_2\;+\;P_O_2\;+\;P_A_R\;+\;P_H_e\;+\;P_H\\P=3\;+\;1.80\;+\;0.29\;+\;0.18\;+\;0.10\;\text {atm}\\P=5.37\;\rm atm

The total pressure of the gaseous mixture has been 5.37 atm. Thus, option D is correct.

For more information about partial pressure, refer to the link:

brainly.com/question/14623719

7 0
2 years ago
Balance the following:<br> CsH12 +<br> 02<br> CO2+<br> |<br> H20
user100 [1]

Answer:

C5H12+8O2-->5CO2+6H20

7 0
3 years ago
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