Ask question

Ask question

All categories

3 years ago

9

The number of atoms or molecules in a mole is known as the __________ constant.

1 answer:

AnnZ [28]3 years ago

7 0

Answer: Avogrado's Constant

Explanation:

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant. The concept of the mole can be used to convert between mass and number of particles.

You might be interested in

Identify which element is the least malleable: potassium, calcium, scandium, or titanium

Tamiku [17]

The least malleable would be potassium

6 0

3 years ago

Read 2 more answers

I'm stuck, can someone help me.

Viktor [21]

I would say c.........

7 0

3 years ago

Read 2 more answers

Iron crystallizes in a body-centered cubic unit cell. The edge length of this cell is 287 pm. Calculate the density of iron in g

Jlenok [28]

Answer:

Density = 7.87 grams per mL

Explanation:

Density is given by the formula:

$d=\frac{Z\times M}{a^{3}\times N_a}$

where

Z = effective number of atoms in one unit cell.

M = Molecular mass of the substance

a = edge length of unit cell

Na = Avogadro number = 6.022×10²³

In this case:

Z=2 as it is body-centered type unit cell

M = 56 g per mole for iron

a = 287 pm = $287\times10^{-10}\ cm$

Substituting the above values in the density formula we get:

$d=\frac{2\times56}{(287\times10^{-10})^{3}\times6.022\times10^{23}}=7.87\ g\ per\ ml$

Density of iron is 7.87 grams per mL.

7 0

3 years ago

(a) 7.56 0.375 +14.3103<br>

Musya8 [376]

Answer:Use the Law of Sines to solve the triangle ABC if it exists: a) A= 68.41°, B = 54.23”, a = 12.75 ft. b = b = b = a sub ź111347.

Explanation:

4 0

2 years ago

Study the map. Then use the drawing tool to create a model of how the two air masses look when they interact at front 1.

Allisa [31]

Answer: Picture

Explanation: I got it right

8 0

3 years ago