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Kamila [148]
2 years ago
13

The theory general relativity was discovered by who

Chemistry
1 answer:
svetoff [14.1K]2 years ago
4 0
<span>The theory general relativity was discovered by Albert Einstein </span>
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Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt
Jet001 [13]

Answer:  2.00 V

Explanation:

The balanced redox reaction is:

2Al+3Cu^{2+}\rightarrow 2Al^{3+}+3Cu

Here Al undergoes oxidation by loss of electrons, thus act as anode. Copper undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

Al^{3+}+3e^-\rightarrow Al E^0_{[Al^{3+}/Al]}=-1.66V

Cu^{2+}+2e^-\rightarrow Cu E^0_{[Cu^{2+}/Cu]}=0.340V

E^0=E^0_{[Cu^{2+}/Cu]}- E^0_{[Al^{3+}/Al]}

E^0=+0.34- (-1.66V)=2.00V

Thus the standard cell potential is 2.00 V

6 0
3 years ago
What are the word equations for the following? Please help
Serga [27]

Calcium oxide + water = calcium hydroxide.

Magnesium + hydrochloric acid = magnesium chloride + hydrogen.

Sodium hydrogen carbonate + citric acid  = Na3C6H5O7(aq)+3H2O(l)+3CO2(g)

Iron + salt water = 4Fe(OH)3 (rust)

4 0
3 years ago
Read 2 more answers
When K- and I- combine
Charra [1.4K]

Answer:

was zum Teufel

Explanation:

7 0
3 years ago
An object has 15 grams of atoms and displaces 2.5 mL of water when dropped into a cylinder. What is the objects density?
Softa [21]

Answer:

<h3>The answer is 6 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 15 g

volume = 2.5 mL

We have

density =  \frac{15}{2.5}  \\

We have the final answer as

<h3>6 g/mL</h3>

Hope this helps you

7 0
3 years ago
Suppose you made 40 atoms of Highlinium and it has a
Karo-lina-s [1.5K]

Answer:

After 6sec 5 atoms will be left.

Explanation:

Given data:

Total atoms of Highlinium = 40

Half life = 2 sec

Atoms left after 6sec = ?

Solution:

First of all we will calculate the number of half lives passes during 6sec.

Number of half lives = Time elapsed/ half life

Number of half lives = 6 sec / 2sec

Number of half lives = 3

Now we will calculate the number of atoms left

At time zero = 40 atoms

At 1st half life = 40 atoms/2 = 20 atoms

At 2nd half life = 20 atoms/2 = 10 atoms

At 3rd half life = 10 atoms / 2 = 5 atoms

Thus, after 6sec 5 atoms will be left.

6 0
2 years ago
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