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3 years ago

15

The electron configuration 1s^2 2s^2 2p^6 3s^2 describes the electrons of which element?

1 answer:

blondinia [14]3 years ago

4 0

The electron configuration describes the electrons of Magnesium

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How does curiosity influence scientific discovery

algol13

Perhaps the most important attitude is curiosity. Curiosity a state of active interest or genuinely wanting to know more about something allows you to embrace unfamiliar circumstances, giving you a greater opportunity to experience discovery and joy. Indeed, studies show that life is better when you're curious.

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3 years ago

Is this equation balanced and in the lowest form?<br><br> 4NH3 → 2N2 + 6H2

GREYUIT [131]

Answer:

It's balanced but not in the lowest form

Explanation:

The actual equation is given by

$\\ \sf\longmapsto 2NH_3\longrightarrow N_2+3H_2$

8 0

3 years ago

I have rounded edges. I can be squished, ripped, or melted. I am generally solid and white, but with my ability to burn fast I t

polet [3.4K]

Answer:

I am almost certain the answer is a marshmallow.

Hope that helps!

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3 years ago

A rock sits on a mountain top. What may happen to this rock in the next hundred years?

zmey [24]

Answer:

it will become part of the mountain

Explanation:

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3 years ago

A solution of HCl is .3M. Determine what mass of acid has been dissolved in 150 mL of solution

ehidna [41]

1.643 g mass of acid has been dissolved

<h3>Further explanation</h3>

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

$\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}$

Where

M = Molarity

n = number of moles of solute

V = Volume of solution

Molarity of HCl solution = 0.3 M

Volume of HCl solution = 150 ml=0.15 L

So moles of HCl :

$\tt n=M\times V\\\\n=0.3\times 0.15\\\\n=0.045$

mass of HCl (MW=36.5 g/mol) :

$\tt mass=moles\times MW\\\\mass=0.045\times 36.5\\\\mass=1.643~g$

7 0

3 years ago