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
alexandr402 [8]
3 years ago
12

Please help !!! 45 minutes remaining on my test

Chemistry
2 answers:
Ksivusya [100]3 years ago
7 0
First, third, last one I had the same test
elixir [45]3 years ago
3 0
One, three, and five
You might be interested in
What do weather and climate have in common?
Anni [7]

Answer:

Both apply to a certain region

Choice C is correct

Explanation:

Weather refers to the atmospheric conditions of a given place over a short period of time, like a day.

On the other hand, Climate refers to the average climatic conditions of a particular region measured over a long period of time.

Both weather and climate apply to a certain region.

5 0
3 years ago
Rank these acids according to their expected pKa values.ClCH2COOHClCH2CH2COOHCH3CH2COOHCl2CHCOOHIn order of highest pka to lowes
Ilia_Sergeevich [38]

Answer:

CH₃CH₂CH₂COOH > CH₃CH₂COOH > ClCH₂CH₂COOH  > ClCH₂COOH

Explanation:

Electron-withdrawing groups (EWGs) increase acidity by inductive removal of electrons from the carboxyl group.

Electron-donating groups (EDGs) decrease acidity by inductive donation of electrons to the carboxyl group.

  • The closer the substituent is to the carboxyl group, the greater is its effect.
  • The more substituents, the greater the effect.  
  • The effect tails off rapidly and is almost zero after about three C-C bonds.

CH₃CH₂-CH₂COOH —  EDG —                         weakest —  pKₐ = 4.82

      CH₃-CH₂COOH — reference —                                     pKₐ = 4.75

  ClCH₂-CH₂COOH — EWG on β-carbon— stronger —     pKₐ = 4.00

           ClCH₂COOH — EWG on α-carbon — strongest —  pKₐ = 2.87

6 0
3 years ago
Read 2 more answers
A sample of nitrogen gas has a volume of 478 cm3 and a pressure of 104.1 kPa. What volume would the gas occupy at 88.2 kPa if th
nadezda [96]

<span>1.    </span>To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

P1V1 =P2V2

V2 = P1 x V1 / P2

 V2 = 104.1 x 478 / 88.2

<span> V2 =564.17 cm^3</span>

6 0
3 years ago
Read 2 more answers
What is empirical and moleculer formula?.
den301095 [7]
The molecular formula shows the exact number of molecules. Therefor, the empirical formula is the simplest formula of the molecular formula
4 0
3 years ago
What decomposers are in a estuary ?
belka [17]
They are <span>Common Soil </span><em>Bacteria</em><span> Nematodes.

                                  Hope this helps:)</span>
7 0
4 years ago
Other questions:
  • 1093.5 rounded into 3 sig figs
    13·1 answer
  • Aluminum can. Copper sheeting, silver spoon, wood drumstick, brick house, Which objects are flexible?
    6·2 answers
  • A/an _______ bond allows metals to conduct electricity
    6·2 answers
  • Which of the following naming rules would apply to CaCO3? A. metal + polyatomic anion B. polyatomic cation + nonmetal anion(ide)
    10·2 answers
  • What is the most likely source of the carbon dioxide shown in the graph above?
    11·1 answer
  • Explain, in your own words, what volumic mass is
    15·1 answer
  • Metamorphic rocks with a non-foliated texture show metamorphic change that involves ____.
    14·1 answer
  • Which species do you think is best adapted to a diet of large, tough-to-crack<br> seeds? Explain.
    14·2 answers
  • What is the double bond of XeF4
    15·1 answer
  • Which of the following could cause a change in state from a liquid to a solid?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!