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chubhunter [2.5K]

3 years ago

15

What is inside the nucleus of an atom

2 answers:

Tamiku [17]3 years ago

3 0

The nucleus of a atom contains the protons and the neutrons all most all of the atoms mass is weigh by the protons and the neurons.

Schach [20]3 years ago

3 0

<span>Most atoms have three different subatomic particles insidethem: protons, neutrons, and electrons. The protons and neutrons are packed together into the center of the atom(which is called the nucleus) and the electrons, which are very much smaller, whizz around the outside.</span>Mar 9, 2017

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The smell of fresh cut pine is due in part to the cyclic alkene called pinene. Given the following data of pinene: Vapor pressur

Sveta_85 [38]

Answer: Heat of vaporization is 41094 Joules

Explanation:

The vapor pressure is determined by Clausius Clapeyron equation:

$ln(\frac{P_2}{P_1})=\frac{\Delta H_{vap}}{R}(\frac{1}{T_1}-\frac{1}{T_2})$

where,

$P_1$ = initial pressure at 429 K = 760 torr

$P_2$ = final pressure at 415 K = 515 torr

= enthalpy of vaporisation = ?

R = gas constant = 8.314 J/mole.K

$T_1$ = initial temperature = 429 K

$T_2$ = final temperature = 515 K

Now put all the given values in this formula, we get

$\log (\frac{515}{760}=\frac{\Delta H}{2.303\times 8.314J/mole.K}[\frac{1}{429K}-\frac{1}{415K}]$

$\Delta H=41094J$

Thus the heat of vaporization is 41094 Joules

4 0

3 years ago

Of five different laboratory solutions, the solution with the highest acidity has a pH of

Dominik [7]

Answer:

Explanation: E. 12 because it has the highest acidity rate.

5 0

2 years ago

What is the half-life of A? What will the pressure, initially 32.1 kPa, at

kodGreya [7K]

Answer:

a) 32.09 kPa

b) 32.09 kPa

Explanation:

Given data:

rate constant $= 3.56\times 10^{-7} s^{-1}$

initial pressure is = 32.1 kPa

half life of A is calculated as

$t_{1/2} = \frac{ln 2}{k}$

$t_{1/2} = \frac{ln 2}{3.56\time 10^{-7}}$

$t_{1/2} = = 1.956 \times 10^6 s$

for calculating pressure we have follwing expression

$ln p = ln P_o - kt$

$P =P_o e^{-kt}$

a) $P = 32.1 e^{-3.56\times 10^{-7} \times 10} = 32.09 kPa$

b) $P = 32.1 e^{-3.56\times 10^{-7} \times 10\times 60} = 32.09 kPa$

5 0

3 years ago

Calculate the number of moles of C2H6 (nC2H6) in 1.80×1023 molecules of C2H6.

dem82 [27]

1481.40 molecules of C2H6

6 0

3 years ago

which Law relates temperature,pressure,volume,and the number of miles of a gas under perfect conditions

spin [16.1K]

Answer:

the ideal gas law

Explanation:

hope this helps

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3 0

3 years ago