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marshall27 [118]
2 years ago
10

A cube of steel has dimensions 0.2 mx 0.2 m * 0.2 m. What is

Chemistry
2 answers:
Anvisha [2.4K]2 years ago
8 0

Answer: 8000

Explanation:

never [62]2 years ago
5 0

Answer: 800”

Explanation:

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Write a balanced half-reaction for the oxidation of liquid water H2O to aqueous hydrogen peroxide H2O2 in basic aqueous solution
nignag [31]

Answer : The balanced half-reaction in a basic solution will be,

2OH^-(aq)\rightarrow H_2O_2(aq)+2e^-  

Explanation :

Redox reaction or Oxidation-reduction reaction : It is defined as the reaction in which the oxidation and reduction reaction takes place simultaneously.

Rules for the balanced chemical equation in basic solution are :

First we have to write into the two half-reactions.

Now balance the main atoms in the reaction.

Now balance the hydrogen and oxygen atoms on both the sides of the reaction.

If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.

If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion (OH^-) at that side where the less number of hydrogen are present.

Now balance the charge.

  • The half reaction is :

H_2O(l)\rightarrow H_2O_2(aq)

  • Now balance the oxygen atoms.

H_2O(l)\rightarrow H_2O_2(aq)+H_2O(l)

  • Now balance the hydrogen atoms.

H_2O(l)+2OH^-(aq)\rightarrow H_2O_2(aq)+H_2O(l)

  • Now balance the charge.

H_2O(l)+2OH^-(aq)\rightarrow H_2O_2(aq)+H_2O(l)+2e^-

The balanced half-reaction in a basic solution will be,

2OH^-(aq)\rightarrow H_2O_2(aq)+2e^-

7 0
2 years ago
Which type of reaction is Mg + S → MgS?
Aleksandr [31]

The type  of reaction that is  Mg +S→  MgS  is a  synthesis reaction


  <u><em>Explanation</em></u>

Synthesis reaction  as refers to as direct combination is a reaction  in which two or   more chemical   species   combine  to form   more  complex  product.

 The reaction  of  Mg  +S → MgS  is a synthesis  reaction because;

    Mg combine with  S to form a more complex product MgS

8 0
2 years ago
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Titanium metal requires a photon with a minimum energy of 6.94×10⁻¹⁹J to emit electrons. What is the wavelength of this light? E
Elena-2011 [213]

Answer:2.86x10^-7m

Explanation:E=hc/^

E=6.94x10^-19J

c = 2.9979x10^8m/s

h= 6.626x10^-34Js

^ =( 6.626x10^-34)x( 2.9979x 10^8)/ 6.94x10^-19

= 2.86x10^-7m

5 0
2 years ago
(S)-5,5-dibromo-3-fluoro-2-methyl-3-hexanol
blsea [12.9K]
<span>(CH3)2-CH2-C(F)(OH)-CH2-CBr2-CH3</span>
6 0
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A balance measures mass to 0.001 g. If you determine the mass of an object that weighs about 30 g, would you record the mass as
solong [7]

Answer:

The mass is recorded as 32.075 g

Explanation:

"The first digit of uncertainty is taken as the last significant digit", this is the rule for significant figures in the analysis. The balance measures the mass up to three decimal places, so it makes the most sense to note the  whole figure.

8 0
2 years ago
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