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
Vadim26 [7]
3 years ago
12

An ion of which element is larger than its atom? Al I Са Sr

Chemistry
2 answers:
SIZIF [17.4K]3 years ago
5 0

Option 2

Hope this helps :)

Karo-lina-s [1.5K]3 years ago
4 0
Option 2 I hope u don’t fail lol good luck
You might be interested in
The liquid-phase reaction follows an elementary rate law and is carried out isothermally in a flow system. The concentrations of
Vera_Pavlovna [14]

e kajajdjae no squo viboes  we eso doadks Answer:ipao han meExplanation:no

5 0
3 years ago
Why is it so hard to dispose of nuclear waste
Anarel [89]
It is highly hazardous, it is radioactive
8 0
3 years ago
How many grams of NaF should be added to 500 mL of a 0.100 M solution of HF to make a buffer with a pH of 3.2
Korolek [52]

Answer:

2.25g of NaF are needed to prepare the buffer of pH = 3.2

Explanation:

The mixture of a weak acid (HF) with its conjugate base (NaF), produce a buffer. To find the pH of a buffer we must use H-H equation:

pH = pKa + log [A-] / [HA]

<em>Where pH is the pH of the buffer that you want = 3.2, pKa is the pKa of HF = 3.17, and [] could be taken as the moles of A-, the conjugate base (NaF) and the weak acid, HA, (HF). </em>

The moles of HF are:

500mL = 0.500L * (0.100mol/L) = 0.0500 moles HF

Replacing:

3.2 = 3.17 + log [A-] / [0.0500moles]

0.03 = log [A-] / [0.0500moles]

1.017152 = [A-] / [0.0500moles]

[A-] = 0.0500mol * 1.017152

[A-] = 0.0536 moles NaF

The mass could be obtained using the molar mass of NaF (41.99g/mol):

0.0536 moles NaF * (41.99g/mol) =

<h3>2.25g of NaF are needed to prepare the buffer of pH = 3.2</h3>
4 0
2 years ago
How does the specific heat of water compare to the specific heat of concrete?
telo118 [61]
The specific heat of water is higher than the specific heat of concrete.
5 0
3 years ago
Which of the following is an oxidation-reduction reaction?
Alina [70]

Answer:

last choice

Explanation:

oxidation and reduction can be defined in terms of adding or removing oxygen to a compound

oxidation is gaining oxygen

reduction is to loss oxygen

5 0
3 years ago
Other questions:
  • Write a hypothesis about the effect of dry conditions on earthworm behavior. Use the "if . . . then . . .
    5·2 answers
  • Match the term with its correct charge. Positive charge. Negative charge. Neutral: No electric charge. A. electron B. neutron C.
    9·1 answer
  • If I wrote 7h2o, how many hydrogen atoms do I have now? How many oxygen atoms?
    13·2 answers
  • How could the survivors about starting a fire?
    7·1 answer
  • If I have 1.9 moles of gas held at a pressure of 5 atm and in a container with a
    14·1 answer
  • Which is more acidic, 3-nitrophenol or 2-nitrophenol and why? Which is more basic, benzyl amine or aniline and why? Which is mor
    15·1 answer
  • List 5-6 facts about earths interior.
    14·1 answer
  • What minimum mass of HCl in grams would you need to dissolve a 2.2 g iron bar on a<br> padlock?
    15·1 answer
  • What does an ion have that an atom does not?
    15·1 answer
  • Oceanography does not include the study of which of the following topics?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!