the radioactive particle that is positively charged and has two protons and two neutrons is the _____. alpha particle beta particle gamma ray neutron

Answers

Answer 1

Answer:

Answer: The correct answer is alpha particle.

Explanation:

There are 3 radioactive particles which are released in radioactive decay process:

1. Alpha particle: This particle is released when a nuclei undergoes alpha decay. The particle released has a mass of 4 units and has a charge of 2 units. The particle is positively charged.

$_Z^A\textrm{X}\rightarrow _(Z-2)^(A-4)+_2^4\alpha$

2. Beta-particle: This particle is released when a nuclei undergoes beta decay process. The particle released has a mass of 0 units and has a charge of (-1) units.

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_(-1)^0\beta$

3. Gamma radiations: These radiations are released when an unstable nuclei undergoes gamma ray emission and gives excess energy by a spontaneous electromagnetic process. The radiations does not carry any charge and has no mass.

$_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma$

Hence, the radioactive particle that is charged charged and has two protons and two neutrons is the alpha particle.

Answer 2

Answer: it is the alpha particle

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A chunk of silver has a heat capacity if 42.8 j/*c. If the silver has a mass of 181g, calculate the specific heat of sliver.

Answers

From the given question, we know
Heat capacity of the chunk of silver = 42.8 J/c
Mass of the silver = 181 g
Now we also know the formula for determining the specific heat of silver and that is
Specific heat (C) = heat capacity/ mass
= (42.8/181) J/gC
= 0.24 J/gC
So the specific heat of the silver is 0.24 J/gC.
With the given known facts, it is easily possible to find out the specific gravity of any substance.

Which method is appropriate for separating a mixture of iron and aluminum? A. using a magnet B. distillation C. evaporation D. observing different densitie

Answers

Appropriate method for separating a mixture of iron and aluminum is definitely A. using a magnet. If we use the second method we will vaporize either aluminum or iron.
If we used the third method it would change liquid into a gas which is strange according to the task.
And observing (even for a long time) won't help separating.

The actual size of a wood louse is 0.4mm but Robert drew his 5mm. What is the magnification?Please answer QUICK I ain’t got much time

I’ll give brainiest if you answer in the next 15 mins

Answers

Final answer:

The magnification of Robert's drawing of a wood louse can be obtained by dividing the size of the drawing (5mm) by the actual size of the wood louse (0.4mm). This gives a magnification of 12.5 times.

Explanation:

The magnification of a drawing can be calculated using the method 'Image size/Actual size'. In this question, Robert's drawing is of a size 5mm while the actual size of the wood louse is 0.4mm. Substituting these values into the formula, you would get 5mm/0.4mm which equates to a magnification of 12.5 times.

The magnification of Robert's drawing of a wood louse can be calculated by dividing the size of the drawing by the actual size, resulting in a magnification of 12.5.

Learn more about magnification here:

brainly.com/question/35912556

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Answer:

Magnification is the number of times larger an image is compared with the real size of the object.

Magnification = Image / Actual = 5/0.4 =12.5

Explanation:

What is the equation for calculating density?

Answers

the equation for calculating density is m÷v

Describe how spead, velocity and
brcoloration are related.

Answers

Answer:

Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.

Determine the percent composition of chlorine (Cl) in sodium chloride (NaCl). .

Answers

Answer:

$\% Cl=61.65\%$

Explanation:

Hello,

In this case, chlorine's percent composition is given by the shown below formula:

$\% Cl=(n_(Cl)m_(Cl))/(M_(NaCl))*100\%$

Whereas $n_(Cl)$ accounts for the number of chlorine atoms into the NaCl, $m_(Cl)$ for chlorine's atomic mass and $M_(NaCl)$ for sodium chloride's molar mass, therefore, the percent composition of chlorine turns out:

$\% Cl=(1*35.45)/(58.45)*100\%=61.65\%$

Best regards.

It's (grams-of-Cl/total-grams)(100), so (35.45g/58.44g)(100) = 60.66% Cl. Hope this helps!

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