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Reika [66]
2 years ago
8

Magbigay ng 3 halimbawa ng lipunang sibil. Paki sagot ng wasto plies >_<​

Chemistry
1 answer:
Sliva [168]2 years ago
6 0

Answer:

i not anther stand your bla bla bla

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9. Write a balanced nuclear equation for the following: The isotope Strontium-90 decays by Q-
Sergio039 [100]

Answer: _{38}^{90}\textrm{Sr}\rightarrow _{36}^{86}\textrm{Kr}+_2^4\textrm{He}

Explanation:

Alpha Decay: In this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. The mass number is reduced by 4 units and atomic number is reduced by 2 units.

General representation of an element is given as:   _Z^A\textrm{X}

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

General representation of alpha decay :

_Z^A\textrm{Sr}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha

The  balanced nuclear equation when the isotope Strontium-90 decays by Q-  decay is :

_{38}^{90}\textrm{Sr}\rightarrow _{36}^{86}\textrm{Kr}+_2^4\textrm{He}

4 0
3 years ago
A 2.00 kg piece of lead at 40.0°C is placed in a very large quantity of water at 10.0°C,and thermal equilibrium is eventually re
sveticcg [70]

Answer:

Δ S = 26.2 J/K

Explanation:

The change in entropy can be calculated from the formula  -

Δ S = m Cp ln ( T₂ / T₁ )

Where ,

Δ S = change in entropy

m = mass  = 2.00 kg

Cp =specific heat of lead is 130 J / (kg ∙ K) .

T₂ = final temperature  10.0°C + 273 = 283 K

T₁ = initial temperature ,  40.0°C + 273 = 313 K

Applying the above formula ,

The change in entropy is calculated as ,

ΔS = m Cp ln ( T₂ / T₁ )  = (2.00 )( 130 ) ln( 283 K / 313 K )

ΔS = 26.2 J/K

6 0
3 years ago
Why is the use of high-frequency radio waves a beneficial technological advancement
Lynna [10]

Answer:

I think It's C

Explanation:

due to higher waves can get easy transfers and receive those signals for most things, such as radios, TVs, phone signals etc etc

4 0
2 years ago
What is the answer of these compound
olganol [36]
BaO, Barium Oxide. 

Na2SO4, Sodium Sulfate.

CuO, Copper (II) Oxide.

P2O5, Diphosphorus Pentoxide.

HNO3, Nitric Acid.

CO32-, Molecular Formula. 

Hope this helps. :)
8 0
3 years ago
Which greenhouse gas typically exists in both the stratosphere and the troposphere?
Arturiano [62]
The answer should be ozone
5 0
3 years ago
Read 2 more answers
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