1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Flauer [41]
3 years ago
11

Which of the statements below is not a characteristic of economically developed nations?

Chemistry
2 answers:
nikklg [1K]3 years ago
6 0
I would go with option #4, reduced use of resources!

:V
Fed [463]3 years ago
6 0

Reduced Use Of Resources Is The Answer

You might be interested in
If the solubility of a gas in water is 5.0g/L when the pressure of the gas above the water is 2.0 atm, what is the pressure of t
Serggg [28]
F the solubility of a gas in water is 5.0g/L when the pressure of the gas above the water is 2.0 atm, what is the pressure of the gas above the water <span>when the solubility of the gas is 1.0 g/L</span>

Here's how to solve this one.
The formula for solubility is 
<span>P1 / P2 = solubility1 / solubility2 </span>
P1=2*1/5= .4 atm

So the correct answer is 0.4 atm.
5 0
3 years ago
Write a question about how changing temperature affects a gas.
UNO [17]
Which property of gas affects the gas by change in that property ?
7 0
3 years ago
Read 2 more answers
What is the mass of the block of iron illustrated below?
Mandarinka [93]
VOLUME= 5cm*10cm*2cm =100cm^3
but density of iron=7.874g/cm^3
mass=7.874g*100 =787.4g
mass of that block = 787.4g
7 0
3 years ago
Read 2 more answers
Calculate the standard reaction enthalpy for the reaction NO2(g) → NO(g) + O(g) given +142.7 kJ/mol for the standard enthalpy of
bulgar [2K]

Answer:

The standard reaction enthalpy for the given reaction is 235.15 kJ/mol.

Explanation:

O_2(g) \rightarrow \frac{2}{3}O_3(g),\Delta H^o_{1}=142.7 kJ/mol..[1]

O_2(g) \rightarrow 2 O(g),\Delta H^o_{2}=498.4 kJ/mol..[2]

NO(g) + O_3(g)\rightarrow NO_2(g) + O_2(g) ,\Delta H^o_{3} = -200 kJ/mol..[3]

NO_2(g)\rightarrow NO(g) + O(g),\Delta H^o_{4}=?..[4]

Using Hess's law:

Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.

2 × [4] = [2]- (3 ) × [1] - (2) × [3]

2\times \Delta H^o_{4}=\Delta H^o_{2} -3\times \Delta H^o_{1}-2\times \Delta H^o_{3}

2\times \Delta H^o_{4}=498.4 kJ/mol-3\times 142.7 kJ/mol-2\times -200 kJ/mol

2\times \Delta H^o_{4}=470.3 kJ/mol

\Delta H^o_{4}=\frac{470.3 kJ/mol}{2}=235.15 kJ/mol

The standard reaction enthalpy for the given reaction is 235.15 kJ/mol.

7 0
3 years ago
How many moles are in 25kg of Fe2O3?
expeople1 [14]

Answer:

The answer is 159.6882.

Assuming you are converting between grams Fe2O3 and mole.

3 0
3 years ago
Other questions:
  • A gas mixture contains 0.150 mol of oxygen (O2) gas, 0.419 mol of nitrogen (N2) gas. And 0.211 mol of argon (Ar) gas in a 0.250
    11·1 answer
  • Any ions with a charge (3+ ) has?
    15·1 answer
  • Which type of compound dissociates?<br><br> A.ionic<br> B.molecular<br> C.liquid<br> D.all types
    8·2 answers
  • Wes melted some cheese over some tortilla chips to make nachos.
    6·1 answer
  • How did mendeleev arrange atoms in the periodic table?
    10·1 answer
  • Please help me l don’t understand please !!!!!!
    13·1 answer
  • Fill out blanks using the words: tiny, electrons (x2),shells, neutrons, protons(x2), nucleus, configuration
    8·1 answer
  • How can a large body of water, such as an ocean, influence climate?
    13·2 answers
  • What's the correct answer?
    10·1 answer
  • Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following perc
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!