Answer: There are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series
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.
Beta Decay : It is a type of decay process, in which a proton gets converted to neutron and an electron. This is also known as -decay. In this the mass number remains same but the atomic number is increased by 1.
In radioactive decay the sum of atomic number or mass number of reactants must be equal to the sum of atomic number or mass number of products .
Thus for mass number : 235 = 207+4X
4X= 28
X = 7
Thus for atomic number : 92 = 82+2X-Y
2X- Y = 10
2(7) - Y= 10
14-10 = Y
Y= 4
Thus there are 7 alpha-particle emissions and 4 beta-particle emissions involved in this series
Answer:
8083.8ml x 1 L/1000ml x 1mole/ 24L = 194.01 moles
Explanation:
When sodium hydroxide (NaOH) is added to benzoic acid (C
), sodium benzoate and water (
) are formed because benzoic acid is weak acid and NaOH is strong base. The reaction is shown in diagram 1. To the tube of sodium benzoate, if 6 m HCl is added, sodium benzoate salt will react with HCl and produce benzoic acid and sodium chloride, NaCl. The reaction is shown in diagram 2.
Answer:
aռsաɛʀ: ɢɛռɛs aʀɛ tɦɛ ʊռɨts օʄ ɦɛʀɛɖɨtʏ aռɖ aʀɛ tɦɛ ɨռstʀʊċtɨօռs tɦat ʍaҡɛ ʊք tɦɛ ɮօɖʏ's ɮʟʊɛքʀɨռt. tɦɛʏ ċօɖɛ ʄօʀ tɦɛ քʀօtɛɨռs tɦat ɖɛtɛʀʍɨռɛ ʋɨʀtʊaʟʟʏ aʟʟ օʄ a քɛʀsօռ's ċɦaʀaċtɛʀɨstɨċs. ɦʊʍaռs ɦaʋɛ aռ ɛstɨʍatɛɖ 35,000 ɢɛռɛs.
ċօʀʀɛċt ʍɛ ɨʄ ɨʍ աʀօռɢ (-_^)
Answer:
The mass of radon that decompose = 63. 4 g
Explanation:
R.R = P.E/(2ᵇ/ⁿ)
Where R.R = radioactive remain, P.E = parent element, b = Time, n = half life.
Where P.E = 100 g , b = 5.55 days, n = 3.823 days.
∴ R.R = 100/
R.R = 100/
R.R = 100/2.73
R.R = 36.63 g.
The mass of radon that decompose = Initial mass of radon - Remaining mass of radon after radioactivity.
Mass of radon that decompose = 100 - 36.63
= 63.37 ≈ 63.4 g
The mass of radon that decompose = 63. 4 g
