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
Blizzard [7]
4 years ago
5

What island chain is South America was the source of many of Darwin’s insights

Chemistry
1 answer:
photoshop1234 [79]4 years ago
8 0
The Galapagos Islands
You might be interested in
What are the products of the reaction with their coefficients C2H18+O2?
lozanna [386]

Answer:

2C2H18 + 13O2 → 4CO2 + 18H2O (I balanced your equation)

Products - CO2 & H20

4 0
3 years ago
Which best describes an enviromental adavntage of solar energy
Serjik [45]
Generating electricity from solar panels produce no greenhouse gases whatsoever, and so can help to reduce the effect of climate change if used widely. With solar energy powering a home or business, these is no burning of fuel and no emissions from energy production.
4 0
3 years ago
Is this sentence true or false ? hydrogen is considered to be a metal
victus00 [196]
It is false, hope this helps!
4 0
4 years ago
Read 2 more answers
If 190dm of hydrogen gas collected at 20°c and 760mmHg .Calculate it's volume at stp (standard pressure=760mmHg
Andrei [34K]

Answer:

177.1 L

Explanation:

The excersise can be solved, by the Ideal Gases Law.

P . V = n . R . T

In first step we need to determine the moles of gas:

We convert T° from, C° to K → 20°C + 273 = 293K

We convert P from mmHg to atm → 760 mmHg = 1atm

1Dm³ = 1L → 190L

We replace: 190 L . 1 atm = n . 0.082 . 293K

(190L.atm) / 0.082 . 293K = 7.91 moles.

We replace equation at STP conditions (1 atm and 273K)

V = (n . R .T) / P

V = (7.91 mol . 0.082 . 273K) / 1atm = 177.1 L

We can also make a rule of three:

At STP conditions 1 mol of gas occupies 22.4L

Then, 7.91 moles will be contained at (7.91 . 22.4) /1 = 177.1L

3 0
3 years ago
1,500 grams is equal to:<br> 1.5 kg<br> 1.5L<br> 1.5 cm<br> all of the above
Salsk061 [2.6K]
1kg is 1,000 grams plus .5 is 1.5 kg
8 0
3 years ago
Other questions:
  • Which substances are most likely acids
    13·2 answers
  • What happens to the coefficients in a reaction when writing the equilibrium constant expression?
    9·1 answer
  • The final solution had a volume of 1.0L and a molarity of 0.925. How many moles of Nickel (II) chloride were present in the solu
    12·1 answer
  • How far away is sirius from the sun in inches? ____ in miles? ____
    8·1 answer
  • The combustion of glucose, C6 H12 O6 (s), produces carbon dioxide, CO2 (g), and water, H2 O(g), according to the equation below.
    11·2 answers
  • Which of the following is the best explanation of why an ionic compound formula is a ratio of atoms
    14·1 answer
  • 14. The noble gases in Group 18 are very reactive. *<br> O True<br> O False
    6·1 answer
  • Plsssss help !! what are the steps to convert from atoms, compounds, formula units, ect to moles
    14·1 answer
  • 2.How could you identify an element by its<br> number of protons?
    6·2 answers
  • Define the overvoltage in an electrolysis process​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!