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3 years ago

9

GIVE ME ANSWERS

2 answers:

Shalnov [3]3 years ago

6 0

Answer:

uh.. How many do you want done??

Explanation:

tensa zangetsu [6.8K]3 years ago

3 0

I’m gonna give answers that I’m only 100% sure of, and maybe suggest answers too

9. Neutrons
10. Protons and Neutrons
12. Atomic Mass / Mass Number
13. Little Boy over Hiroshima, Japan.
14. Spontaneous fission
15. Alpha decay
17. Marie Curie
19. Nuclear fission
20. Gamma rays
21. Atomic number

I’d probably know more of these if I paid attention more in my lessons/studies IMO, but here’s what I know 100% for those answers!

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What Is atomic radius

lesya692 [45]

Answer:

The atomic radius is the measure of the size of its atoms.

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3 0

4 years ago

Read 2 more answers

Multiple choice-- please help!

kvasek [131]

The rate law for the reaction : r=k.[A]²

<h3>Further explanation</h3>

Given

Reaction

A ⟶ B + C

Required

The rate law

Solution

The rate law is a chemical equation that shows the relationship between reaction rate and the concentration / pressure of the reactants

For the second-order reaction it can be:

1. the square of the concentration of one reactant.

$\tt r=k[A]^2$

2. the product of the concentrations of two reactants.

$\tt r=k[A][B]$

And the reaction should be(for second order) :

2A ⟶ B + C

Thus, for reaction above (reactant consumption rate) :

$\tt r=-\dfrac{\Delta A}{2\Delta t}=k[A]^2$

6 0

3 years ago

Assuming the diameters of the nucleus and atom are 10A

victus00 [196]

Answer:

2.95 $\times 10^{-9}$ is the fraction of the nucleus is present in atom.

Explanation:

Given:

The diameter of the nucleus - 10A

The diameter of atom - 1.5 A

From this, we can find the radius of nucleus and atom i.e.

For nucleus $=\frac{10}{2}$

For atom $= \frac{1.5}{2}$

Now, the fraction of nucleus $= \frac{volume of nucleus}{volume of atom}$

= $\frac{4}{3}\pi (\frac{10}{2})\frac{3.14}{2}\pi (\frac{10}{2})^3$

or, = $(\frac{10}{1.5})^3$

= 2.95 $\times 10^{-9}$

Therefore, 2.95 $\times 10^{-9}$ is the fraction of nucleus in the atom.

8 0

3 years ago

Which is not a compound? A.They are substances B. They have compositions that vary C. They can be physically separated into thei

horsena [70]

Answer:

<em>D</em><em>.</em><em>They have properties similar to those of their component elements.</em><em> </em>

Explanation:

When elements are joined, the atoms lose their individual properties and have different properties from the elements they are made of .

8 0

3 years ago

What is the pOH of a solution that has a pH of 5.60?

Virty [35]

Answer:

8.4

Explanation:

pH + pOH = 14

14 - 5.60 = 8.40

4 0

4 years ago