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kkurt [141]
3 years ago
10

The atmospheric pressure on a mountain is 550 mmHg and 1

Chemistry
1 answer:
andrew11 [14]3 years ago
5 0

Answer:

0.72

Explanation:

if 760=1

550=x

=550÷760= 0.72 in two s.f

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Designer Andrea Tyson, a conservation planner from Naples, Florida, calls Arendt’s approach "capitalism mated with conservation.
jarptica [38.1K]

Answer:

It uses this term to represent the economic use of land and nature, with minimal degradation and maximum environmental preservation.

Explanation:

Capitalism is an economic system that promotes the maximum economic exploitation of terrestrial resources. It is common for this exploitation to be strongly associated with environmental degradation, destruction of natural habitats, deforestation and death of fauna and flora. With this, we can consider that capitalism is one of the main formulators of environmental degradation, however many professionals have considered the term "capitalism mated with conservation," where terrestrial resources are exploited consciously and with the objective of reducing degradation to the maximum. environmental impact and maximize conservation.

7 0
3 years ago
In the reaction MgCl2 + 2KOH Mg(OH)2+ 2KCI, if 3 moles MgCh are added to 4 moles KOH, what determines how much Mg(OH)2 is made?
gulaghasi [49]

Answer:-

KOH determines how much Mg(OH)2 is made.

2 mol of Mg(OH)2 formed

Explanation:-

The balanced equation is

MgCl2 + 2KOH --> Mg(OH)2+ 2KCI,

From seeing the coefficients we notice

2 mol of KOH reacts with 1 mol of MgCl2

4 mol of KOH reacts with 1 x 4 / 2 = 2 mol of MgCl2

3 moles of MgCl2 was added but only 2 mol react.

So we see there is excess MgCl2 .

Hence KOH is the limiting reactant.

So KOH determines how much Mg(OH)2 is made.

We see from the balanced chemical equation,

2 mol of KOH gives 1 mol of Mg(OH)2.

4 mol of KOH will give 1 x 4 /2 = 2 mol of Mg(OH)2.

7 0
3 years ago
What advatu do telescopes have over telescopes used on earth?
KatRina [158]

<u><em>THEY ARE NOT AFFECTED BY EARTH`S ATMOSPHERE</em></u>

7 0
3 years ago
The effusion rate of hcl is 43. 2 cm/min in a certain effusion apparatus. What is the rate of effusion of ammonia in the same ap
olga2289 [7]

The rate of effusion of ammonia (NH₃) in the same apparatus is 63.3 cm/min

<h3>Graham's law of diffusion </h3>

This states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass i.e

R ∝ 1/ √M

R₁/R₂ = √(M₂/M₁)

<h3>How to determine the rate of ammonia (NH₃) </h3>
  • Rate of HCl (R₁) = 43.2 cm/min
  • Molar mass of HCl (M₁) = 1 + 35.5 = 36.5 g/mol
  • Molar mass of NH₃ (M₂) = 14 + (3×1) = 17 g/mol
  • Rate of NH₃ (R₂) =?

R₁/R₂ = √(M₂/M₁)

43.2 / R₂ = √(17 / 36.5)

Cross multiply

43.2 = R₂ × √(17 / 36.5)

Divide both side by √(17 / 36.5)

R₂ = 43.2 / √(17 / 36.5)

R₂ = 63.3 cm/min

Thus, the rate of effusion of ammonia is 63.3 cm/min

Learn more about Graham's law of diffusion:

brainly.com/question/14004529

5 0
2 years ago
1. What is the mass of 2.65×1023 atoms of lithium? grams
masya89 [10]

Answer: 3.05 grams

Explanation:

To find the mass in grams, we need to use Avogadro's number and the molar mass of lithium.

Avogadro's number: 6.022×10²³ atoms/mol

Molar mass: 6.94 g/mol

2.65*10^2^3 atoms*\frac{mol}{6.022*10^2^3 atoms} *\frac{6.94g}{mol} =3.05 g

5 0
3 years ago
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