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
prisoha [69]
3 years ago
7

4. Which is produced when a base reacts with water?

Chemistry
2 answers:
a_sh-v [17]3 years ago
6 0

Answer:

OH^{-1}  ions.

Explanation:

Hydrogen ions (H+) are attracted to the negative oxygen end of a water molecule, combining to form hydronium ions.

Base: Very definition of base is that it produces OH- on dissolution with water. Bases have a pH greater than 7. A base is any substance that dissolves in water and produces hydroxide ions (OH-).

Dennis_Churaev [7]3 years ago
5 0

Answer:

hydroxide ion

Explanation:

I took the quiz

You might be interested in
Which of the following elements is represented by the orbital diagram?
aalyn [17]
The answer is A I hope it was right
6 0
3 years ago
A student used standard solutions of aspirin in a FeCl3-KCl-HCl mixture to plot a graph of molarity versus absorbance for dilute
kvasek [131]

Answer:

is any thing which has mass volume and empty space

8 0
2 years ago
Which of the following isoelectronic series is correctly ranked from largest ionic radius to smallest ionic radius? 1. N 3−, O 2
love history [14]

Answer:

<u>Option 1</u>:  N⁻³ > O⁻² > F⁻ > Na⁺ > Mg⁺²    

Explanation:

<u>Ionic radius is the radius of an atom´s ion in ionic crystal structure</u>.<u> </u><u><em>In an ion that lose an electron, to form a cation, the radius of the ion gets smaller</em></u><em>, </em>because the repulsion between electrons decrease because fewer electrons are present. Conversely, <u><em>adding on electron to a neutral atom, to form an anion, causes electron - electron repulsions to increase, so the size of the radius of the ion gets bigger.</em></u>                  

<u><em>Isoelectronic species are ions or elements that have the same number of electrons in their electronic shells but have different overall charges, because of their different atomic numbers</em></u>.                        

<u><em>In a isolelectronic series (same number of electrons),</em></u> <u><em>the increase of the positive charge (given by the number of protons in the nucleus), will cause a decrease in radius </em></u>beacuse the greater electrostatic attraction between the electrons and the nucleus. Consequently, the ion with the greatest nuclear charge will have the smallest ionic radius and the ion with the smallest nulear charge will have the largest ionic radius.  

<u>We will use this principle to solve our problem</u>.  

In our case, the given ions are:  

  • N⁻³ :    Z = 7,  e⁻ = 10
  • O⁻²:     Z= 8,   e⁻ =10
  • F⁻:       Z = 9,  e⁻ = 10
  • Na⁺:    Z= 11,   e⁻ = 10
  • Mg⁺²:  Z=12,   e⁻ =10

where Z= number of protons, and e⁻ = number of electrons.

<em><u>Hence the decreasing order of ionic radius is:</u></em>

N⁻³ > O⁻² > F⁻ > Na⁺ > Mg⁺²  

Have a nice day!

4 0
3 years ago
A ping pong ball with a mass of 2.20 grams rolls along a frictionless table with a velocity of 0.850 m/s. what is the momentum o
Nataly_w [17]
1.87 should be your answer 
6 0
3 years ago
Read 2 more answers
The normal freezing point of a certain liquid Xis-7.30°C but when l02. g of iron(III) chloride (FeCl3) are dissolved in 650. g o
IRISSAK [1]

Answer:

2.7 °C.kg/mol

Explanation:

Step 1: Calculate the freezing point depression (ΔT)

The normal freezing point of a certain liquid X is-7.30°C and the solution freezes at -9.9°C instead. The freezing point depression is:

ΔT = -7.30 °C - (-9.9 °C) = 2.6 °C

Step 2: Calculate the molality of the solution (b)

We will use the following expression.

b = mass of solute / molar mass of solute × kilograms of solvent

b = 102. g / (162.2 g/mol) × 0.650 kg = 0.967 mol/kg

Step 3: Calculate the molal freezing point depression constant Kf of X

Freezing point depression is a colligative property. It can be calculated using the following expression.

ΔT = Kf × b

Kf = ΔT / b

Kf = 2.6 °C / (0.967 mol/kg) = 2.7 °C.kg/mol

7 0
3 years ago
Other questions:
  • The Tapeats Sandstone and Bright Angel Shale contain fossils of trilobites. Trilobites were marine organisms similar to modern-d
    9·1 answer
  • Consider the following reaction:
    9·1 answer
  • 2. You used a calorimeter in the Heat Transfer lab. Explain how the calorimeter works, and how to calculate the heat given off o
    10·1 answer
  • Which of these particles are lost in the oxidation process ?
    6·2 answers
  • The recommended daily intake of potassium ( K ) is 4.725 g . The average raisin contains 3.513 mg K . Fill in the denominators o
    9·1 answer
  • If 9.2 femptosections is equal to 9.2 ×10^-15 seconds what is the exponential equivalent of fempto?
    6·1 answer
  • Density = Mass
    6·1 answer
  • How do you get the electron configuration for an anion?
    6·1 answer
  • The person who answerers this will get 100 points pls answer all the question's
    6·1 answer
  • How do you find the oxidation numbers for H3PO4
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!