All categories

2 years ago

Step 4: Summarize nuclear changes.

Chemistry

1 answer:

zavuch27 [327]2 years ago

6 0

Nuclear changes involves changes in the composition of the nucleus of atoms with the release of large amounts of energy.

<h3>What are nuclear changes?</h3>

Nuclear changes are changes which occur in the nucleus of atoms of elements.

Nuclear changes involves radioactive decays to give radiation and energy spontaneously known as radioactivity.

In this type of nuclear change no energy is required to start the reaction but large amount of energy are released.

Nuclear changes can also involve splitting of large nucleus into smaller nucleus of atoms known as nuclear fission or the formation of larger nucleus from the combination of two or more smaller nuclei known as nuclear fusion.

Energy is required to start nuclear fission and fusion but the energy released is far greater.

When compared with energy changes in chemical reactions, the energy released in nuclear reactions is far greater.

Therefore, nuclear changes involves changes in the composition of the nucleus of atoms with the release of large amounts of energy.

Learn more about nuclear changes at: brainly.com/question/25819143

#SPJ1

You might be interested in

If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature? (205)

tiny-mole [99]

Answer:

204.73K

Explanation:

the formula : PV=nRT

n=4

P=5.6 atm

V=12 L

R=0.08206 L atm mol-1 K-1

T=?

So, if you plug it in, you will get:-

T=PV/nR

T=(5.6 atm)(12 L)/(4 mol)(0.08206 L atm mol-1 K-1)

T=204.73 K

hope this is correct!

4 0

2 years ago

Which star is the dimmest HELP PLEASE

Len [333]

Answer:

Bellatrix.

Explanation:

8 0

3 years ago

Read 2 more answers

An ideal gas (C}R), flowing at 4 kmol/h, expands isothermally at 475 Kfrom 100 to 50 kPa through a rigid device. If the power pr

Zina [86]

<u>Answer:</u> The rate of heat flow is 3.038 kW and the rate of lost work is 1.038 kW.

<u>Explanation:</u>

We are given:

$C_p=\frac{7}{2}R\\\\T=475K\\P_1=100kPa\\P_2=50kPa$

Rate of flow of ideal gas , n = 4 kmol/hr = $\frac{4\times 1000mol}{3600s}=1.11mol/s$ (Conversion factors used: 1 kmol = 1000 mol; 1 hr = 3600 s)

Power produced = 2000 W = 2 kW (Conversion factor: 1 kW = 1000 W)

We know that:

$\Delta U=0$ (For isothermal process)

So, by applying first law of thermodynamics:

$\Delta U=\Delta q-\Delta W$

$\Delta q=\Delta W$ .......(1)

Now, calculating the work done for isothermal process, we use the equation:

$\Delta W=nRT\ln (\frac{P_1}{P_2})$

where,

$\Delta W$ = change in work done

n = number of moles = 1.11 mol/s

R = Gas constant = 8.314 J/mol.K

T = temperature = 475 K

$P_1$ = initial pressure = 100 kPa

$P_2$ = final pressure = 50 kPa

Putting values in above equation, we get:

$\Delta W=1.11mol/s\times 8.314J\times 475K\times \ln (\frac{100}{50})\\\\\Delta W=3038.45J/s=3.038kJ/s=3.038kW$

Calculating the heat flow, we use equation 1, we get:

[ex]\Delta q=3.038kW[/tex]

Now, calculating the rate of lost work, we use the equation:

$\text{Rate of lost work}=\Delta W-\text{Power produced}\\\\\text{Rate of lost work}=(3.038-2)kW\\\text{Rate of lost work}=1.038kW$

Hence, the rate of heat flow is 3.038 kW and the rate of lost work is 1.038 kW.

4 0

3 years ago

70 oz of protein how many grams of protein are

Snowcat [4.5K]

There is a bout 7 grams of protein in 1 ounce of meat, so 7*70=

3 0

3 years ago

Read 2 more answers

Convert 121cm to mm

Ray Of Light [21]

Answer:

1210

Explanation:

Because the 121 cm times 10 is 1210

4 0

2 years ago