Jmartinez7254 Jmartinez7254

30-08-2017
Chemistry

contestada

What change in mass number occurs when a radioactive atom emits an alpha particle?

Respuesta :

LeChatNoir LeChatNoir

30-08-2017

The alpha particle is the helium nucleus.
The mass of helium nucleus (⁴₂He) is 4u.

The mass of radioactive atom decreases by 4u. Look at the reaction below:

²²³₈₈Ra ---> ⁴₂He + ²¹⁹₈₆Rn

Answer Link

Otras preguntas

18) How many points are on this plane? A.1 B.6 C.5 D.7

Are set screw-type connectors permitted to be used with armored cable that has an aluminum armor?a. yes b.no

What is the relation between the wavelength of light and the refractive index of the given transparent medium?

Which of the following statement(s) are correct regarding point and frameshift gene mutations? Responses A Frameshift mutations arise from the insertion or de

With regards to objective writing, what does the "M" in SMART mean?A. MeasurableB. MoneyC. ManageableD. Manage

The pusher has released the box (done a split) with the box moving to the right at 39.3 m/s. what statement describes the box after release?

The relationship between the pH of a solution and concentration of deprotonated and protonated of ionizable group is described by:a) Henderson-Hasselbalch equat

How much oil is the u.s. strategic petroleum reserve? for how much time could the reserve supply the oil we're now importing from other countries?

Suppose you have a weighted die. P(1) = P(2), P(3) = P(4) = P(5) = P(6), P(1) = 3 * P(3). What is the probability to roll a die and get 3 or 4? a) 1/6 b) 1/3 c)

Legally, who had the final say whether or not Mississippi was to become part of the United States? Responses A the electorate of the statethe electorate of the

ACCESS MORE EDU ACCESS