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
Mrac [35]
3 years ago
7

How did life begin??✯✯✯✯✯✯​

Chemistry
1 answer:
ValentinkaMS [17]3 years ago
3 0

Answer:

many scientists believe that RNA or something similar to RNA, was the first molecule on earth to self- replicate and begin the process of evolution that led to more advanced forms of life, including human beings.

You might be interested in
How many grams are found from 2 moles of glucose C6H1206?
Kitty [74]

Answer:

360g

Explanation:

Hope it helps you!

3 0
3 years ago
Suppose you have a dozen carbon atoms, a dozen gold atoms, and a dozen iron atoms. Even though you have the same number of each,
mixer [17]

Answer:

By weight they have the same mass, but the number of atoms is different

Explanation:

3 0
4 years ago
Read 2 more answers
For the reaction x2 + y + z → xy + xz, it is found that doubling the concentration of x2 doubles the reaction rate, tripling the
andre [41]
R=[x2][y] rate law of the reaction
check:
if we double x2,  r(new) =[2*x2][y]=2*[x2]*[y]=2*r
if we triple y,  r(new) =[x2][3y]=3*[x2]*[y]=3*r  
z- no effect, so z is not included

5 0
4 years ago
Read 2 more answers
What is the maximum amount of water (in grams) that can be removed from 15ml of toluene by the addition?
Nataly [62]

Complete Question

Magnesium sulfate forms a hydrate with the formula MgSO_4. 7H_20. What is the maximum amount of water (in grams) that can be removed from 15 ml of toluene by the addition of 200 mg of anhydrous magnesium sulfate? The molar mass of MgSO_4 is 120.4 g/mol; H20 = 18 g/mol.

Answer:

The value  is  z =  0.2093 \  g of  H_2O

Explanation:

From the question we are told that

   The volume of toluene is  V = 15 mL

    The mass of  anhydrous magnesium sulfate is  m =  200m g  = 200 *10^{-3} \  g

   The formula of the hydrate is   MgSO_4. 7H_20

    The molar mass of   MgSO_4  is  z =120.4 \ g/mol

From the formula given we see that

  1 mole of  Mg SO_4 wil remove  7 moles of H_2O to for the given formula

Hence

  120.4 g (1 mole) will remove  7 moles (7 * 18 g = 126 g  ) of  H_2O to for the given formula

Therefore 1 g of  Mg SO_4  x g  of  H_2O  

So

     x  =  \frac{x]126 *  1}{ 120.4 }

=>     x  =  1.0465 \  g

From our calculation we obtained that

  1 g of Mg SO_4 will remove  x  =  1.0465 \  g  of  H_2O  

Then  

   200 *10^{-3} \  g of Mg SO_4 will remove z g of  x  =  1.0465 \  g  of  H_2O  

So

   z =  200 *10^{-3} *  1.0465

=>z =  200 *10^{-3} *  1.0465

=>z =  0.2093 \  g of  H_2O  

6 0
4 years ago
Write the formula for chromium III acetate
Tamiku [17]

Answer:

C6H9CrO6

Explanation:

6 0
3 years ago
Other questions:
  • ANSWER ASAPP<br> What causes the motion of particles? And more energy equals what?
    14·1 answer
  • A welder has 1.873 × 102 g Fe2O3 and 94.51 g Al in his welding kit. Which reactant will he run out of first?
    5·2 answers
  • Please help!!!!!! BRAINLIEST to right answer! :))
    7·1 answer
  • A voltaic cell utilizes the following reaction: 4Fe2+(aq)+O2(g)+4H+(aq)→4Fe3+(aq)+2H2O(l). What is the emf of this cell under st
    6·1 answer
  • How many grams of nitric acid are needed to produce 30.0 g of water?
    9·1 answer
  • When electrons are added to the outer most shell of a carbon atom what does it form
    15·1 answer
  • An empty plastic bottle is sealed in a cool room and then moved to a very hot room. What can best be stated about the air pressu
    6·2 answers
  • Aspirin has a formula c9h8o4. what is the molar mass of aspirin? 1. 95 g 2. 220 g 3. 180 g 4. 325 g
    9·1 answer
  • What reagent is <br>used to test for starch<br>​
    8·1 answer
  • Sample A: 300 mL of 1M sodium chloride
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!