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
fomenos
3 years ago
12

assume that a section of double stranded DNA contains 100 base pairs. if 40 of the pairs contain baseC how many of the pairs wou

ld contain base A?
Chemistry
1 answer:
ZanzabumX [31]3 years ago
3 0
60 pairs, because A and T are pairs, and C and G are pairs, and since there are only 2 different pairs, they both have to add up tobe 100, so 100-40=60
You might be interested in
Why does the straw in a glass of water look like it is bigger in the water than it really is?
8090 [49]
The light is refracting
7 0
3 years ago
Read 2 more answers
Our body needs iron. Certain foods are rich in iron and iron tablets are usually recommended by doctors. but neither the food no
alukav5142 [94]
If the food and the tablets would be hard then how will the body digest it
8 0
3 years ago
Read 2 more answers
If 2.00g of p-aminophenol ( 109.1 g/mol) reacts with 5.00 ml of acetic anhydride (102.1 g/mol and density = 1.08 g/ml), what mas
inna [77]
The complete reaction is as,

      4-Aminophenol + Acetic Anhydride → <span>Acetaminophen + Acetic Acid

First of all convert the ml of Acetic anhydrite to grams,
As,
                                Density  =  mass / volume
Solving for mass,
                                mass  =  Density </span>× Volume
<span>Putting values,
                                mass  =  1.08 g/ml </span>× 5ml
<span>
                                mass =  5.4 g of acetic anhydride

First Find amount of  acetic anhydride required to react completely with 2 g of p-Aminophenol,
As,
       109.1 g of p-aminophenol required  =  102.1 g of acetic anhydride
so,     2 g of p-aminophenol will require  =  X g of Acetic Anhydride

Solving for X,
                                X  =  (2 g </span>× 102.1 g) ÷ 109.1 g
 
                                X  =  1.87 g of acetic anhydride is required to be reacted.

But, we are provided with 5.4 g of Acetic Anhydride, means p-aminophenol is the limiting reactant and it controls the formation of product. Now Let's calculate for product,
As,
       109.1 g of p-aminophenol produced  =  180.2 g of <span>Acetaminophen
So    2.00 g of p-aminophenol will produce  =  X g of Acetaminophen

Solving for X,
                               X  =  (2.00 g </span>× 180.2 g) ÷ 109.1 g
 
                               X  =  3.30 g of Acetaminophen

Result:
          <span>If 2.00g of p-aminophenol reacts with 5.00 ml of acetic anhydride 3.30 g of acetaminophen is made.</span>
4 0
3 years ago
PLEASE HELP!<br> mass number - atomic number =
Dmitry [639]

Answer:

Number of neutrons

Explanation:

The mass number represents the number of protons and neutrons combined and the atomic number only represents the number of protons.

mass number - atomic number = number of neutrons

7 0
3 years ago
Read 2 more answers
If you have 492 moles of As you need moles of NaOH to use it all up
Gemiola [76]

According to the given reaction, 2 moles of As react with 6 moles of NaOH. Use this ratio to find how many moles of NaOH react with 492 moles of As.

492molAs\cdot\frac{6molNaOH}{2molAs}=1476molNaOH

It means that you need 1476 moles of NaOH to use 492 moles of As all up.

5 0
1 year ago
Other questions:
  • How many grams are in 6.53 moles of Pb
    9·1 answer
  • Which of the following has the greatest mass? 1 mole of uranium (U) 1 mole of oxygen (O) 1 mole of sodium (Na) 1 mole of chlorin
    5·2 answers
  • Which of the following does not illustrate a complete circuit?
    12·1 answer
  • Calculate the wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 to n = 3
    5·1 answer
  • Where is energy stored in electromagnetic waves?
    5·2 answers
  • Which skeleton equation is correct for this question below:?
    7·1 answer
  • How will you describe slope
    8·2 answers
  • A student has two solutions of a substance;Solution-1:25M , 400ml and Solution-2:30M , 300M. What is the molarity of the final s
    14·1 answer
  • Energy states of atoms containing more than one electron are influenced by nucleus-electron and electron-electron interactions.
    8·1 answer
  • Can I get some help
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!