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erastova [34]
3 years ago
10

How US is the most developed country?

Chemistry
1 answer:
8090 [49]3 years ago
6 0
 I believe in what USA was and is able to achieve, and trust the nation in many but every ways. What really made it a developed nation is the things that happened in the last 3 Centuries, some of which are;

#1 CULTURAL TOLERANCE & IMMERSION
#2 TECHNOLOGICAL INVENTIONS & ADVANCEMENT IN THE FIELD OF SCIENCE
#3 FAST FOOD CULTURE
#4 HOLLYWOOD
#5 INTEGRITY & PATRIOTISM
#6 MASS CONSUMERISM
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Life can only be brought to you by
Nady [450]

Answer:

BY TRUMP

I DONALD TRUMP APPROVE THIS MESSAGE

Explanation:

5 0
3 years ago
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2. Se combinan 40 g de SO2 y 25 g de O2 determine el porcentaje en masa del exceso con respecto a su masa inicial. P.A. (S = 32;
Marta_Voda [28]

Answer:

60%

Explanation:

En la reacción:

2SO₂ + O₂ → 2SO₃

<em>Donde 2 moles de SO₂ reaccionan por mol de O₂.</em>

El peso atómico del SO₂ es:

1S = 32g/molₓ1 = 32g/mol

2O = 16g/molₓ2 = 32g/mol

SO₂ = 32g/mol + 32g/mol = <em>64g/mol</em>

Y el peso atómico de O₂ es:

2O = 16g/molₓ2 = <em>32g/mol</em>

Las moles de SO₂ y O₂ son:

SO₂: 40g ₓ (1mol / 64g) = <em>0.625 moles</em>

O₂: 25g ₓ (1mol / 32g) = <em>0.7813 moles</em>

Para una completa reacción de SO₂ se necesitan:

0.625 moles SO₂ ₓ (1mol O₂ / 2 mol SO₂) = <em>0.3125 moles de O₂</em>

Así, las moles en exceso de O₂ son:

0.7813 moles - 0.3125 moles = 0.4688 moles O₂

En gramos:

0.4688 moles O₂ ₓ (32g / mol) = 15g O₂ están en exeso.

El porcentaje en exceso es:

15g / 25g ₓ 100 =

<h3>60%</h3>
8 0
4 years ago
Human population growth in 2018 was 1.07% . If this rate of growth remains constant, in what year will the human population doub
telo118 [61]

Answer:

Double time = 65.42 years

Explanation:

We can find what year the human population would double using the rule of 70. This is given as;

Double time = 70 / rate(r)

From the question;

Double time = ?

Rate = 1.07%

Inserting into the equation;

Double time = 70 / 1.07

Double time = 65.42 years

8 0
3 years ago
I REALLY NEED HELP can someone help me please I’ll mark you brainliest! :)
Yanka [14]

Answer:

A

Explanation:

5 0
3 years ago
The oxidation number of all the element in free state is 0​
Art [367]

Answer:

Zero-Nine

Explanation:

this is becasue these numbers are rather small and if you plug these numbers into an equation you will most likely get 0.

8 0
3 years ago
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