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4 years ago

11

How many total atoms in the compound Al3NO2

2 answers:

Tems11 [23]4 years ago

6 0

Answer:

$6.02 \times {10}^{23} \: atoms$

Explanation:

since every compound is equivalent to one mole of particles. This number is represented by avagadros constant which represents the atomic proportion from molar to physical mass on a human scale. This equates to the amount of particles per mole of substance(amount of substance).

$6.02 \times {10}^{23} \: {mol}^{ - 1}$

this can be denoted in symbol form by

$N_A$

avagadros constant is defined as rational so the exact value is 6.02214076×10^23.

avagadros number : 1 mole

evablogger [386]4 years ago

5 0

Answer:

1 mole of aluminum must contain 6.022⋅1023 atoms of aluminium → this is known as Avogadro's constant.

Explanation:

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Give me an atom with the following characteristics:

guajiro [1.7K]

Explanation:

Lanthanide series= E4

Boron=Si

Chalogen=O

Alkaline Earth metal =M9

4 0

3 years ago

A reaction has a rate constant of 2.08 × 10−4 s−1 at 26 oC and 0.394 s−1 at 79 oC . Determine the activation barrier for the rea

leva [86]

<u>Answer:</u> The activation energy of the reaction is 124.6 kJ/mol

<u>Explanation:</u>

To calculate activation energy of the reaction, we use Arrhenius equation, which is:

$\ln(\frac{K_{79^oC}}{K_{26^oC}})=\frac{E_a}{R}[\frac{1}{T_1}-\frac{1}{T_2}]$

where,

$K_{79^oC}$ = equilibrium constant at 79°C = $0.394s^{-1}$

$K_{26^oC}$ = equilibrium constant at 26°C = $2.08\times 10^{-4}s^{-1}$

$E_a$ = Activation energy of the reaction = ?

R = Gas constant = 8.314 J/mol K

$T_1$ = initial temperature = $26^oC=[26+273]K=299K$

$T_2$ = final temperature = $79^oC=[79+273]K=352K$

Putting values in above equation, we get:

$\ln(\frac{0.394}{2.08\times 10^{-4}})=\frac{E_a}{8.314J/mol.K}[\frac{1}{299}-\frac{1}{352}]\\\\E_a=124595J/mol=124.6kJ/mol$

Hence, the activation energy of the reaction is 124.6 kJ/mol

3 0

3 years ago

Is diphenylmenthane a solid or liquid at room temperature

babunello [35]

Answer:

diphenylmethane is liquid at room temperature.

Explanation:

It is a solid below room temperature and its melting point is at 22 degree celsius to 24 Celsius degree celsius.

6 0

3 years ago

What is this element?<br> 1s22s22p63s2<br> Magnesium<br> Aluminum<br> Potassium<br> Neon

valkas [14]

Answer:

It should be silicon... I even googled it to see if I was correct and that’s what it says so can someone figure out why silicon is not an answer

Explanation:

6 0

3 years ago

Read 2 more answers

A bottle of the pain reliever ibuprofen (C13H18O2, molar mass 206.3 g/mol) has 485 tablets. Each tablet contains 200. mg of ibup

Gwar [14]

(a) 485 x 200 mg = 97000 mg of ibuprofen in the bottle

97000 mg x (1g/1000mg) = 97g of ibuprofen in the bottle

97g (1 mol/ 206.5gC13H18O2) = 0.46973 moles of ibuprofen in the bottle

(b) 0.46973 mol C13H18O2 (6.022 x 10^23 molecules/1mol) = 2.8287 x 10^23 molecules of ibuprofen in the bottle

8 0

3 years ago

Read 2 more answers