What are the three types of nuclear radiation

Answers

Answer 1

Answer:

its actually, alpha particles, beta particles, and gamma rays

Answer 2

Answer: Alpha,Beta and the Gamma

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The concentration of gallium in silicon is 5.0 × 10−7 at%. What is the concentration in kilograms of gallium per cubic meter?

Answers

The concentration of gallium in kilograms per cubic meter is equal to the calculated mass of gallium per cubic meter.

To determine the concentration of gallium in kilograms per cubic meter, we need to convert the concentration from atomic percent (at%) to kilograms per cubic meter.

The atomic fraction is the ratio of the number of gallium atoms to the total number of atoms in the silicon-gallium mixture.

We need to know the atomic masses of gallium and silicon. The atomic mass of gallium is 69.72 g/mol, and the atomic mass of silicon is 28.09 g/mol.

The atomic fraction of gallium can be calculated using the formula:

Atomic fraction of gallium = (Concentration of gallium in at%) / (Atomic mass of gallium) / [(Concentration of gallium in at%) / (Atomic mass of gallium) + (Concentration of silicon in at%) / (Atomic mass of silicon)]

Plugging in the given values:

Atomic fraction of gallium = ( $5.0 * 10^(-7)$ %) / (69.72 g/mol) / [( $5.0 * 10^(-7)$ at%) / (69.72 g/mol) + (100 - $5.0 * 10^(-7)$ ) at% / (28.09 g/mol)]

Now, let's convert the atomic fraction to the number of gallium atoms per cubic meter. We can use Avogadro's number, to make this conversion.

Number of gallium atoms per cubic meter = Atomic fraction of gallium × Avogadro's number.

Mass of gallium per cubic meter = Number of gallium atoms per cubic meter × (Atomic mass of gallium / 1000)

Therefore, the concentration of gallium in kilograms per cubic meter is equal to the calculated mass of gallium per cubic meter.

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Final answer:

The concentration of gallium in kilograms per cubic meter can be calculated using the atomic mass of gallium and Avogadro's number.

Explanation:

To calculate the concentration of gallium in kilograms per cubic meter, we can use the atomic mass of gallium and Avogadro's number. The concentration in kilograms per cubic meter can be found using the formula:

Concentration (kg/m³) = Concentration (% by mass) x Density (g/cm³) x Atomic Mass (g/mol) / 1000 x Avogadro's Number

First, convert the concentration from at% (atomic percent) to % by mass. Since gallium has an atomic mass of 69.7 g/mol, we can use this value to find the concentration in kilograms per cubic meter.

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The solid and liquid phases of water can exist ina state of equilibrium at 1 atmosphere of pressure
and a temperature of
(1) 0°C (3) 273°C
(2) 100°C (4) 373°C

Answers

Answer: 0°C

Explanation:
Water undergoes phase changes at 1 atm pressure as follows:
Solidification, change from water to ice occurs at 0°C.
Evaporation, change from liquid to gas occurs at 100°C.

A balloon is a sphere with a radius of 5.0 m. The force of air against the walls of the balloon is 45 N. What is the air pressure inside the balloon? (surface area = 12.56 x radius^2; 1 Pa = 1 N/m^2)A. 1.4 x 10^3 Pa

B. 3.6 x 10^2 Pa

C. 1.4 x 10^-1 Pa

D. 3.6 x 10^-2 Pa

***Idk how to solve this... pls explain?? thx :)

Answers

Pressure is the force exerted on an object per unit area. The equation is expressed as:

P = F / A

From the given above, we substitute the values to the equation.

P = F/A
P= F / (12.56r²)
P = 45 N / (12.56 x 5²
P = 0.143 N/m²

Therefore, the correct answer is option C, 1.4 x 10^-1 Pa.

Why do ionic bonds have strong intermolecular forces? (Imfs)&
Why do covalent bonds have weak intermolecular forces? (Imfs)

Answers

The wording of your question is a bit strange (we usually don't say that bonds have IMFs and ionic compounds don't consist of molecules), but the answer to your question has to do with bond polarity. Strong IMFs are associated with very polar bonds (because increased polarity means greater magnitudes of charges at the poles and, hence, greater electrostatic attraction). Since ionic bonds involve the transfer of entire units of charge (to form cations and anions), they are highly polar (and highly polar means strong IMFs). Polarity in covalent bonds, however, does not arise from transfer of entire units of charge. Rather, they involve unequal sharing of electrons, and thus partial charge. Covalent bonds are, therefore, not as polar as ionic bonds (and less polar means weaker IMFs). I think it would be a good idea to keep in mind, though, that your question should be more along the lines of "Why are ionic bonds more polar than covalent bonds?".

write a balanced chemical equation for the reaction of zncl2 with excess NaOH to produce Na2Zn(oh)4 sodium zincate. what mass of sodium zincate can be produced from 2.00 g of ZNCl2 with excess Naoh by this reaction?

Answers

$4NaOH _((aq)) + ZnCl_(2)_((aq)) ----\ \textgreater \ Na_(2)Zn(OH)_(4)_((ppt)) + 2NaCl (aq)$

$mol = (mass)/(molar mass)$
∴ $mol of ZnCl_(2) = (2.00 g)/([(65)+(35.5 * 2)g/mol)$
= $(2.00 g)/(136 g/mol)$
= 0.0147 mol

$Moles of Na_(2)Zn(OH)_(4) :$
$ratio of ZnCl_(2) : Na_(2)Zn(OH)_(4)$
1 : 1
∴ $Moles of Na_(2)Zn(OH)_(4) <span>$ = 0.0147 mol

Mass = Molar Mass * Mol
∴ $Mass of Na_(2)Zn(OH)_(4) <span>$ = [(23 * 2)+(65)+(16 * 4) + (1*4)] g/mol * 0.0147 mol
= 179 g/mol * 0.0147 mol
= 2.63 g

Compared to the mass and the penetrating power of an alpha particle, a beta particle has(1) less mass and greater penetrating power(2) less mass and less penetrating power
(3) more mass and greater penetrating power
(4) more mass and less penetrating power

Answers

Answer is (1) - less mass and greater penetrating power.

Alpha particle is a ₂⁴He nucleus while beta particles are electrons. Hence, the mass of alpha particle is greater than the mass of beta particle. But, the penetrating power is higher in beta particle than alpha particle. Alpha particles can be blocked by few papers but beta particles can go through those papers.

Answer: A beta particle has less mass and greater penetrating power.

Explanation:

Penetrating power is the power with which a particle travels or pass through a substance.

Since, it is known that mass of an alpha particle ( $^(4)_(2)He$ ) is more than the mass of a beta particle ( $^(0)_(-1)e$ ). So, a particle that holds less mass can move easily from one place to another.

Therefore, beta particle can move faster as it has only one electron as compared to 2 protons of an alpha particle. Hence, interaction of beta particles is less with the atoms or materials through which it passes.

Therefore, we can conclude that compared to the mass and the penetrating power of an alpha particle, a beta particle has less mass and greater penetrating power.

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