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Aleksandr [31]
3 years ago
13

Advantages for building on the green hill

Chemistry
2 answers:
Ksenya-84 [330]3 years ago
8 0
Flooding - Some places in Green Hill have steep areas and don't have any steep areas.
Minchanka [31]3 years ago
6 0
I think that building on a green hill
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2.3 x 10²¹ particles H = __________ mol H (round to the nearest thousandth)
Natalka [10]

Taking into account the definition of avogadro's number, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.

<h3>Avogadro's Number</h3>

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

<h3>This case</h3>

Then you can apply the following rule of three: if 6.023×10²³ particles are contained in 1 mole of H, then 2.3×10²¹ particles are contained in how many moles of H?

amount of moles of H= (2.3×10²¹ particles × 1 mole)÷ 6.023×10²³ particles

<u><em>amount of moles of H= 3.82×10⁻³ moles</em></u>

Finally, 3.82×10⁻³ moles of H are 2.3×10²¹ particles of H.

Learn more about Avogadro's Number:

<u>brainly.com/question/11907018?referrer=searchResults </u>

<u>brainly.com/question/1445383?referrer=searchResults </u>

<u>brainly.com/question/1528951?referrer=searchResults</u>

7 0
2 years ago
In an experiment Teresa's measures 15.5 mL of water she must have used a
kotykmax [81]

Answer:

transfer pipet that had markings every 0.1 mL.

Explanation:

3 0
3 years ago
Which statements are true of solutions?
Dimas [21]

Answer: they contain solutes and solvents, their particles must be evenly distributed, they may contain solid liquid and gas simultaneously, and they are homogeneous matter.

Explanation:

4 0
3 years ago
Which of the equations below represents the correct BALANCED equation?
vovikov84 [41]

Answer:

b. Mg (s) + 2HCl (aq) --> MgCl2 (aq) + H2

Explanation:

A subscript applies only to the element it is attached to while coefficients apply to all elements in a compound.

"a" has 1 atom of each element on the left but 2 Cl on the right.

"c" has 2 Mg, 1 H, & 1 Cl on the left but 1 Mg, 2 H, and 2 Cl on the right.

"d" has 2 atoms of each element on the left but only 1 Mg on the right.

"b" is the only answer with equal numbers of atoms on the right and left sides of the equation.

8 0
3 years ago
A gas in a rigid container has a pressure of 3.5 atm at 200. k calculate the pressure at 273 k
rusak2 [61]

Answer:

4.78atm

Explanation:

From the question, we obtained the following:

P1 (initial pressure) = 3.5 atm

T1 (initial temperature) = 200K

T2 (final temperature) = 273K

P2 (final pressure) =?

Using P1/T1 = P2/T2, the final pressure can be obtained as shown below:

P1/T1 = P2/T2

3.5/200 = P2/273

Cross multiply to express in linear form as shown below:

200 x P2 = 3.5 x 273

Divide both side by 200

P2 = (3.5 x 273)/200

P2 = 4.78atm

Therefore, the pressure at 273K is 4.78atm

6 0
3 years ago
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