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Alla [95]
3 years ago
6

2 science questions! 20 POINTS AND WILL REWARD BRAINLIEST!

Chemistry
2 answers:
notka56 [123]3 years ago
8 0

1) Answer is: beta decay.

Nuclear reaction: ⁴⁰K → ⁴⁰Ca + e⁻ + νe (electron antineutrino).

Beta decay is radioactive decay in which a beta ray and a neutrino are emitted from an atomic nucleus.  

There are two types of beta decay: beta minus and beta plus.  

In beta minus decay, neutron is converted to a proton and an electron and an electron antineutrino.

In this nuclear reaction, potassium (atomic number 19) changes to calcium (atomic number 20), atomic number Z is increased by one.

2) Answer is: ²¹⁴₈₄ Po.

Nuclear reaction: ²¹⁴Bi→ ²¹⁴Po + e⁻ + νe (electron antineutrino).

This is also beta minus decay, neutron is converted to a proton and an electron and an electron antineutrino.

In this nuclear reaction, bizmuth (atomic number 83) changes to polonium (atomic number 84), atomic number Z is increased by one.

serious [3.7K]3 years ago
3 0
214, 84 Po ----Beta decay
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10 molecules SO2 to moles
cluponka [151]

Answer:

1.66 * 10^-23 moles

Explanation:

If you follow dimensional analysis, molecules to moles is 10 molecules divided by 6.022 times 10 to the 23rd and that gives you your answer

3 0
4 years ago
As a real gas deviates from ideal gas behavior, the particles _____
Alik [6]

Answer:

Have some attraction towards each other

Explanation:

Gases deviate from the ideal gas behavior because their molecules have forces of attraction between them. At high pressure, the molecules of gases are very close to each other so the molecular interactions start operating and these molecules do not strike the walls of the container with full impact.

Hope this helps :-)

Have a great rest of your day or night!

Enjoy your studies and assignments

<3 simplysun

ps. I do not own any of these answers so please don't give full credit to me

7 0
3 years ago
How many moles are present in 454 grams of co2?
babunello [35]
Moles=mass/Mr 
mass=454
Mr=12+16+16=44
So,454/44=10.31mol
Answer is:10.31mol
3 0
3 years ago
Read 2 more answers
How does density change as you go deeper in earth
stepladder [879]
Answer:
The density increases.
Explanation:
As you go deeper in depth, pressure increases. Density = mass/volume. The layers beneath us due to pressure get packed to the point of being very dense.
8 0
4 years ago
Please Help!!!
Talja [164]

Answer:

The mechanical energy produced on burning fossil fuels is transformed into chemical energy stored in carbon dioxide.

Explanation:

When fossil fuels are burnt, mechanical energy is produced. Remember that according to the first law of thermodynamics, energy is neither created nor destroyed but can be transformed from one form to another. Hence the mechanical energy produced when fossil fuels are burnt for industrial use, heating of homes, electricity generation , cooking etc the mechanical energy produced is not 'lost'. It must be transformed in to another form of energy.

In the image the arrow G----> C, shows the mechanical energy produced when fossil fuels are burnt are stored as chemical energy in CO2 bonds. CO2 is found in the atmosphere, hence the arrow point upwards from the source towards the atmosphere (C is the atmospheric reservoir of CO2). The energy is subsequently used by producers to produce chemical energy stored in food.

6 0
3 years ago
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