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
Neko [114]
3 years ago
14

PLEASE HURRRYYYY

Chemistry
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

HCO₂H

Explanation:

A buffer is defined as the mixture between a weak acid and its conjugate base, or vice versa, in an aqueous solution.

The HCO₂Na (Sodium formate), is the conjugate base of formic acid, HCO₂H, a weak acid of pKa = 3.75.

Thus, to make a buffer using HCO₂Na, the other substance the buffer should contain is <em>HCO₂H</em>

You might be interested in
Which pair of atoms forms a nonpolar covalent bond? which pair of atoms forms a nonpolar covalent bond? na and cl c and o n and
adelina 88 [10]

Types of Bonds can be predicted by calculating the difference in electronegativity.

If, Electronegativity difference is,

 

                Less than 0.4 then it is Non Polar Covalent

                

                Between 0.4 and 1.7 then it is Polar Covalent 

            

                Greater than 1.7 then it is Ionic

 

For Na and Cl,

                    E.N of Chlorine       =   3.16

                    E.N of Sodium        =   0.93

                                                   ________

                    E.N Difference             2.23          (Ionic Bond)


For C and O,

                    E.N of Oxygen       =   3.44

                    E.N of Carbon        =   2.55

                                                   ________

                    E.N Difference             0.89          (Polar Covalent Bond)


For N and Cl,

                    E.N of Chlorine      =   3.16

                    E.N of Notrogen     =   3.04

                                                   ________

                    E.N Difference             0.12           (Non-Polar Covalent Bond)


For B and O,

                    E.N of Oxygen        =   3.44

                    E.N of Boron           =   2.04

                                                   ________

                    E.N Difference             1.40          (Polar Covalent Bond)

8 0
4 years ago
Read 2 more answers
What color element symbol designates elements that are a gas at a given temperature??
german
<span>These elements are red. They are typically gaseous at normal temperatures: some examples can include oxygen, hydrogen, and the noble gases (neon, argon, krypton). These elements all use the concept of STP (standard temperature and pressure) as their baseline: 1 atmosphere of pressure and 0 degrees Celsius.</span>
8 0
3 years ago
Read 2 more answers
Which diagram shows a wave with the highest frequency? Chemistry question.
notsponge [240]

The correct answer is D

Explanation:

Wave frequency is mainly determined by the number of waves that pass through a specific point. In a diagram, this can be found by analyzing the number of crests (top of the wave) and the space between them. For example, wave B is the one with the lowest frequency because there is only one crest and this shows only one wave passing at a specific point. On the opposite, wave D is the one with the highest frequency because this shows multiple crests and this indicates the frequency is high or that many waves pass through a specific point in a short time.

8 0
3 years ago
A person aims for a target with a wooden bow and arrow. The image shows the path of the
Norma-Jean [14]

Answer:

What’s the answer

Explanation:

I neeeddsdd

5 0
3 years ago
Determine the specific heat of a material if a 15 gram sample absorbs 75 J of heat as it is temperature increases from 15°C to 4
Roman55 [17]

Answer:

Cp=0.2\frac{J}{g\°C}

Explanation:

Hello,

In this case, the heat, mass, specific heat and temperature change are related by:

Q=mCp\Delta T

Thus, if we want to compute the specific heat we simply solve for it:

Cp=\frac{Q}{m\Delta T}=\frac{75J}{15g*(40-15)\°C}  \\\\Cp=0.2\frac{J}{g\°C}

Best regards.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is a good sentence for the word orbit?
    5·2 answers
  • 17. Which of the following is true about an electrolytic cell?
    11·1 answer
  • A 1.50-g sample of hydrated copper(ii) sulfatewas heated carefully until it had changed completely to anhydrous copper(ii) sulfa
    9·1 answer
  • Americium-241 decays into neptunium-237. Which correctly describes this process of radioactive decay?
    10·2 answers
  • UV light can damage biological molecules because it has sufficient energy to break bonds within molecules. A carbon-carbon singl
    14·1 answer
  • Which shows the correct order of experiments from oldest to most recent
    10·1 answer
  • Atoms can gain, lose, or share
    10·1 answer
  • Please please help me please please help please
    15·1 answer
  • Which statements describe or apply the principal of conservation of energy? Select all that apply.
    5·2 answers
  • Why do fireworks produce heat when they explode?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!