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
Levart [38]
3 years ago
8

What if it is did Darwin used to support his theory of evolution

Chemistry
1 answer:
Tatiana [17]3 years ago
8 0

Darwin used finches in his theory of evolution.

You might be interested in
What type of radiation is carbon emitting in the following equation? 14/6C=>0/-1e+14/7N
Lyrx [107]
I believe the answer is gamma ray.
7 0
3 years ago
Who knows how to do this please help
Fofino [41]

Answer: You forgot to zero the balance

Explanation:

5 0
3 years ago
5. Which of these elements has the greatest atomic radius? *<br> Be<br> Mg<br> Ra<br> Ba
trapecia [35]
The answer is Ra
Atomic number for Be is 4

Atomic number for Mg 12

Atomic number for Ra 88

Atomic number for Ba 56
5 0
3 years ago
Answer and work for this problem
MArishka [77]
We can write the balanced equation for the synthesis reaction as 
     H2(g) + Cl2(g) → 2HCl(g)

We use the molar masses of hydrogen chloride gas HCl and hydrogen gas H2 to calculate for the mass of hydrogen gas H2 needed:
     mass of H2 = 146.4 g HCl *(1 mol HCl / 36.46 g HCl) * (1 mol H2 / 2 mol HCl) * 
                           (2.02 g H2 / 1 mol H2)                        
                        = 4.056 g H2

We also use the molar masses of hydrogen chloride gas HCl and chlorine gas CL2 to calculate for the mass of hydrogen gas H2:
     mass of CL2 = 146.4 g HCl *(1 mol HCl / 36.46 g HCl) * (1 mol Cl2 / 2 mol HCl) *
                             (70.91 g Cl2 / 1 mol Cl2)
                          = 142.4 g Cl2 

Therefore, we need 4.056 grams of hydrogen gas and 142.4 grams of chlorine gas to produce 146.4 grams of hydrogen chloride gas.
6 0
3 years ago
Which of the following statements is not true of the phases of a given substance ?
velikii [3]

The particles of gases have more kinetic energy than liquids and gases.

Explanation:

  • We know that in case of solids the molecules are very tightly packed , in case of liquids the molecules are loosely packed and lastly in case of gases the molecules are very loosely packed.
  • As we known in case of solids energy present is very less and in case of liquids energy present is more than solids and lastly in case of gases the energy present is most.
  • Gases have more kinetic energy because the particles present in gaseous form can move easily without any obstruction.
3 0
3 years ago
Other questions:
  • B) How many hydrogen atoms are in an acyclic alkane with 16 carbon atoms?
    13·1 answer
  • Will mark brainliest please Help !
    6·1 answer
  • The energy change, ∆H, associated with the following reaction is +81 kJ. NBr3(g) + 3 H2O(g) → 3 HOBr(g) + NH3(g) What is the exp
    11·1 answer
  • Draw the Lewis Dot structure for RbIO2.
    11·2 answers
  • Fluid does wat to each cell
    6·2 answers
  • (Thermodynamics)
    9·1 answer
  • In an electrical circuit, the presence of a resistor limits the current and prevents
    6·2 answers
  • Is anyone good at chemistry if so can someone help me please ?<br><br> (NO LINKS)
    10·1 answer
  • a compound with a molar mass of about 42g/mol contains 85.7% carbon and 14.3% hydrogen by mass. Write the Lewis structure for a
    5·1 answer
  • 228 90th then decays by emitting alpha particles until 212 82pb is formed. how many alpha decays will occur during this chain pr
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!