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WITCHER [35]
3 years ago
12

What kind of chemical bond is found between paired bases of the dna double helix?

Chemistry
1 answer:
zimovet [89]3 years ago
3 0
Hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.
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A sample of seawater has 0.075 g of sodium chloride per mL of solution. How many moles of sodium chloride are there per liter of
amm1812

Answer:

1.28 mol

Explanation:

mole = mass/molar mass

n = v/v/cm³

mass = 0. 075g

v = 1dm³ =1000cm³

n= m/MV=0.075/58.44(1000)

n =1.28 mol

4 0
3 years ago
What is the name of the binary molecule H2O2? This compound is also known as hydrogen peroxide and is a properly disinfectant or
Masteriza [31]

Answer:

hydrogen dioxide

Explanation:

3 0
3 years ago
How many moles of Na2SO4, are produced from 7.00 moles of (NH4)2SO4?
Harlamova29_29 [7]

Answer:

dumb stupid restarted illiterate STUPID students ARE JUST GOING TO DIE

8 0
3 years ago
If the mass percentage composition of a compound is 72.1% Mn and 27.9% O, its empirical formula is
mojhsa [17]

Answer:

MnO- Manganese Oxide

Explanation:

Empirical formula: This is the formula that shows the ratio of elements

present in a  

compound.

   

How to determine Empirical formula

1. First arrange the symbols of the elements present in the compound

alphabetically to  determine the real empirical formula. Although, there

are exceptions to this rule, E.g H2So4

2. Divide the percentage composition by the mass number.

3. Then divide through by the smallest number.

4. The resulting answer is the ratio attached to the elements present in

a compound.

           

                                                                              Mn                         O    

                         

% composition                                                      72.1                      27.9    

                       

Divide by mass number                                       54.94                     16  

                                 

                                                                               1.31                      1.74    

                       

Divide by the smallest number                         1.31                      1.31                          

                                                                               1                    1.3

                                                 

The resulting ratio is 1:1

 

Hence the Empirical formula is MnO, Manganese oxide

8 0
3 years ago
What do electromagnetic waves carry? How are they produced Through which media can they move? Where do they transfer energy? Wha
mihalych1998 [28]

Answer:

they are transfer from the  towers

Explanation:

3 0
3 years ago
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