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larisa [96]
3 years ago
7

How many atoms of aluminum would be produced from the decomposition of 53.2 g of aluminum oxide?

Chemistry
1 answer:
Hoochie [10]3 years ago
3 0

Answer:

Deci trebuie sa faci unu pe trei cu Ashajfjfjgbgbxkrbcjrkjgkrbgirngkubtuxjndoskfijddjjdjf

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What does the Atomic Number tell you? the amounr of electronstprorons
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Answer

Atomic number or proton number tells us the number of protons found in the nucleus of every atom of that element

Explanation:

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The density of copper is 8.96g/ml. the mass of 7.00ml of copper is
murzikaleks [220]
Density = mass / volume

8.96 = m / 7.00

m = 8.96 x 7.00

m = 62.72 g
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What mass of aluminum has a total nuclear charge of 3.0 C?Aluminum has atomic number 13. Suppose the aluminum is all of the isot
pshichka [43]

Answer:

The value is m  = 6.48*10^{-5} \  g

Explanation:

From the question we are told that

The total nuclear charge is Q_t  =  3.0 \ C

The atomic number is n  =  13

The number of neutrons is n  =  14

Generally the number of protons is mathematically represented as

N_p  =  \frac{Q_t}{p}

Here p is the charge on a proton with the value p =  1.60 *10^{-19} \ C

=> N_p  =  \frac{3}{p}

=> N_p  =  \frac{3}{1.60 *10^{-19} }

=> N_p =  1.875*10^19 \  protons

Generally the number of atoms present is mathematically represented as

N_a  =  \frac{N_p}{n }

=> N_a  =  \frac{ 1.875*10^19}{13}

=> N_a  =  1.44*10^{18} \  atoms

Generally the number of moles of atom present is mathematically represented as

N  =  \frac{N_a}{A_n }

Here A_n is the Avogadro's number with a constant value

A_n   = 6.023*10^{23}

So

N   =  \frac{1.44*10^{18}}{6.023*10^{23} }

=> N   =  2.4*10^{-6} \  mol

Generally the total mass is mathematically represented as

m  =  N  * M

Here  M is the molar mass of   aluminum with

         M  =  27 \  g/mol

So

        m  = 2.4*10^{-6}  * 27

         m  = 2.4*10^{-6}  * 27

         m  = 6.48*10^{-5} \  g

8 0
3 years ago
What state of matter has more volume?​
anzhelika [568]

Answer:

please mark as brainliest

Explanation:

ans: Gas

The particles of matter in the gaseous state are neither close together nor fixed in place. The gas expands to fill its container. Thus, a given number of particles will have the greatest volume in the gas state.30‏/06‏/2014

6 0
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