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2 years ago

What is this element? 1s22s22p63s2 Magnesium Aluminum Potassium Neon

Chemistry

2 answers:

valkas [14]2 years ago

6 0

Answer:

It should be silicon... I even googled it to see if I was correct and that’s what it says so can someone figure out why silicon is not an answer

Explanation:

KonstantinChe [14]2 years ago

6 0

Magnesium

hope this helped :)

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When you heat an air-filled balloon, what happens inside with regard to the movement of air molecules?

rodikova [14]

They heat up which helps the balloon fly

3 0

3 years ago

What's the velocity of a ball falling with 100 joules of kinetic energy and a mass of 2 kilograms?

FinnZ [79.3K]

Answer:

Explanation:

kinetic energy of linear motion

$k.e = \frac{1}{2} m {v}^{2}$

kinetic energy, K.e= 100joules

mass, m = 2kg

velocity, v =?

substituting the values into the formula :

$100joules = \frac{1}{2} \times 2kg \times {v}^{2}$

${v }^{2} = 100$

$v = \sqrt{100 }$

$v = 10m { \sec }^{ - 1}$

3 0

3 years ago

Change 1.56 km to 60 cm

AfilCa [17]

The value 2600 will satisfactorily convert 1.56km to 60cm

Explanation:

To change a number from one to another, we need a conversion factor like that number fulfills the equality requirement to make them the same.

The aim here is to find the number.

We are working with the unit of distance here.

Let us make our conversion factor = K

1.56km x K = 60cm

So that K = $\frac{1.56km}{60cm}$

Now let us convert 60cm to km;

1000m = 1km

100cm = 1m

60cm x $\frac{1m}{100cm}$ x $\frac{1km}{1000m}$

= 0.0006km

now;

K = $\frac{1.56km}{0.0006km }$ = 2600

The value 2600 will satisfactorily convert 1.56km to 60cm

learn more:

Distance brainly.com/question/2840850

#learnwithBrainly

4 0

3 years ago

When minerals or salts dissolve in water, they form

Elanso [62]

<span>When minerals or salts dissolve in water, they form ions. The correct answer is B. These ions are known as electolytes, which are often found in such solutions as salts, acids, and bases. So, when you dissolve these things in water, they will produce these types of ions.
Osmosis is a process, so it isn't a material that can be produced. Edema refers to swelling. Cations are also incorrect, because ions, not cations are formed.
</span>

8 0

3 years ago

Read 2 more answers

What is the pH of a solution with a concentration of 4.2 × 10–5 M H3O+? 2.31 4.38 5.62 6.87

Eva8 [605]

<h3><u>Answer</u>;</h3>

pH = 4.38

<h3><u>Explanation;</u></h3>

Consider that ;

[H3O+] = 10-pH mol/L

Therefore; the pH is the -log of the [hydronium ion].

pH = - log [H3O+]

Thus;

pH = - log (4.2 × 10^–5)

= 4.38

3 0

3 years ago

Read 2 more answers