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Lady_Fox [76]
3 years ago
10

Boreddddddddddd :D:D:D:D:D:D^0^^0^^0^^0^^0^^_^^_^

Chemistry
2 answers:
DaniilM [7]3 years ago
5 0

Answer:

Same :]

Explanation:

Im always bored :>

Anika [276]3 years ago
3 0
Definitely me too rip
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Calculate the number of moles of Na+ ions in 25g of sodium carbonate?​
valkas [14]

Explanation:

First, we need to calculate the number of moles of sodium carbonate we have in a 25 g sample. To calculate this, we will

find the molar mass of sodium carbonate (Na2CO3):

⇒ 2 × Molar mass of sodium + Molar mass of carbon + 3×molar mass of oxygen

⇒ 2 × 23 + 12 + 3 × 16

⇒ 46 + 12 + 48

⇒ 106g/mol

Thus, the molar mass of Na2CO3 is 106g/mol.

Therefore, number of moles = 25 ÷ 106

=> 0.2358 mol

Now, we know that every mole of Na2CO3 have 0.2358 moles of Na+ ions. Hence, total moles of Na2CO3 is 0.4716 moles

Number of ions present = 6.022 × 1023 × 0.4716 mol = 2.84 × 1023ions

6 0
3 years ago
An atom has radius of 227 pm and crystallizes in a body-centered cubic unit cell. What is the volume of the unit cell
sdas [7]

We will see that the volume of the unit cell is 144,070,699.06 pm^3

<h3>How to get the volume of a body-centered cubic unit cell?</h3>

In a body-centered cubic unit cell, the side length of the cube is given as:

S = \frac{4}{\sqrt{3} } *R

Where R is the radius of the atom.

And the volume of a cube is the side length cubed, then we can see that the volume of our cube will be:

V = S^3 = (\frac{4}{\sqrt{3} }*227pm)^3

Solving that we get:

V  = (\frac{4}{\sqrt{3} }*227pm)^3 = 144,070,699.06pm^3

This is the approximated volume of the unit cell.

If you want to learn more about unit cell structures, you can read:

brainly.com/question/13110055

5 0
2 years ago
A chemical bond formed when two atoms share electrons is called a(n)
melamori03 [73]
A chemical bond that is formed when two atoms share electrons is called a covalent bond :) 
3 0
3 years ago
Read 2 more answers
Question 3 Multiple Choice Worth 1 points)
OLga [1]

Answer:

the asnwer is B

Explanation:

5 0
3 years ago
How many atoms are in 44 grams of sulfur?
horrorfan [7]

Answer:

Explanation:

The Avagadro constant = 6.022 x 10²³ denotes the no of molecules in one mole of the substance

Regarding Sulphur Dioxide, the molar mass is 64.

Hence 44 g means 44/64 mole of SO2

So no of molecules in 44g of SO2 = 6.022 x 10²³ x 44/64

On simplification,

11/16 x 6.022 x 10²³ molecules are present in 44g of SO2

3 0
3 years ago
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