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Anastaziya [24]
3 years ago
14

Would love to know the answer immediately!!

Chemistry
1 answer:
Jet001 [13]3 years ago
3 0

Answer:

what's the qstn first ?????

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Write a nuclear balanced equation An atom of strontium-80 emits a positron
belka [17]

Answer:

₃₈Sr⁸⁰  →  ₃₇Rb⁸⁰ + ⁰₊₁e

Explanation:

Positron emission:

It is also called beta positive decay in which the neutron inside of the nucleus converted into the proton an thus emit the positron and electron neutrino which is called β particle.

Properties of beta radiation:

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminium is used to block the beta radiation

⁴₆C → ¹⁴₇N + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.  It is beta minus decay.

5 0
3 years ago
Hg(OH)2+H3PO4=Hg3(PO4)2+H2O
Papessa [141]
What about them?.....
6 0
3 years ago
An exacuted glass vessel weighs 50 g when empty, 148g when filled with an liquid of density o.989/cc and 50.5 g whenfilled with
Zanzabum

MW of gas : 124.12 g/mol

<h3>Further explanation  </h3>

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}

ρ = density  

m = mass  

v = volume  

glass vessel wieight = 50 g

glass vessel + liquid = 148 ⇒ liquid = 148 - 50 =98 g

volume of glass vessel :

\tt V=\dfrac{m}{\rho}=\dfrac{98}{0.989}=99.1~ml

An ideal gas :

m = 50.5 - 50 = 0.5 g

P = 760 mmHg = 1 atm

T = 300 K

\tt PV=\dfrac{mass(m)}{MW}.RT\\\\MW=\dfrac{m.RT}{PV}\\\\Mw=\dfrac{0.5\times 0.082\times 300}{1\times 0.0991}=124.12~g/mol

3 0
3 years ago
Melting water is an example of a physical change because (3 points)
ladessa [460]
The water changes state.
3 0
3 years ago
By which process aqua fortis is manufactured
kap26 [50]

Answer: Aqua fortis is also known as Nitric Acid  

Explanation: and the process in making aqua fortis is THE OSTWALDS PROCESS

detailed explanation by me

ammonia is also used in this process, which is reacted with oxygen and water and a catalyst platinum.

HOPE THIS HELPSS!!!

7 0
2 years ago
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