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
lapo4ka [179]
3 years ago
5

Which of these ionic compounds have polyatomic ions? Check all that apply.

Physics
2 answers:
timama [110]3 years ago
7 0

Answer:

the answer is CaCO₃ and  NaOH.

Explanation:

Taya2010 [7]3 years ago
5 0

Answer:

  • CaCO₃ and
  • NaOH.

Explanation:

Polyatomic ions are ions that contain more than one atom in each one of the ions.  

Ionic compounds are made of cations (positive ions) and anions (negative ion). By convention, the cation is written before the anion.

List the ions in each compound:

<h3>CaCO₃</h3>

Cation: \rm Ca^{2+},

Anion: \rm {CO_3}^{2-}.

\rm Ca^{2+} is a monatomic ion for it contains only one atom in each ion.

\rm {CO_3}^{2-} is a polyatomic ion for it contains four atoms (one C atom and three O atoms) in each ion.

<h3>NaF</h3>

Cation: \rm Na^{+},

Anion: \rm F^{-}.

Both \rm Na^{+} and \rm F^{-} are monatomic for they contain only one atom in each ion.

<h3>FeO</h3>

Cation: \rm Fe^{2+},

Anion: \rm {O}^{2-}.

Both \rm Fe^{2+} and \rm O^{2-} are monatomic for they contain only one atom in each ion.

<h3>CaCl₂</h3>

Cation: \rm Ca^{2+},

Anion: \rm {Cl}^{-}.

Both \rm Ca^{2+} and \rm Cl^{-} are monatomic for they contain only one atom in each ion.

<h3>NaOH</h3>

Cation: \rm Na^{+},

Anion: \rm {OH}^{-}.

\rm Na^{+} is a monatomic ion for it contains only one atom in each ion.

\rm {OH}^{-} is a polyatomic ion for it contains two atoms (one O atom and one H atom) in each ion.

You might be interested in
A light-year measures the _______ that light travels in 1 year.
o-na [289]
<span>A light-year measures the distance that light travels in 1 year. 

Answer : B ) Distance

-Hope this helps.</span>
4 0
3 years ago
Read 2 more answers
If one of two interacting charges is doubled, the force between the charges will _____________.
malfutka [58]

If one of two interacting charges is doubled, the force between the charges will double.

Explanation:

The force between two charges is given by Coulomb's law

F=\frac{k q1 q2}{r^{2}}

K=constant= 9 x 10⁹ N m²/C²

q1= charge on first particle

q2= charge on second particle

r= distance between the two charges

Now if the first charge is doubled,

we get F'=\frac{k (2q1) q2}{r^{2}}

F'= 2 F

Thus the force gets doubled.

4 0
3 years ago
a skinny girl devours food that is equivalent to 600 kcal, as she is anorexic she repents and wants to lose twice as many calori
blondinia [14]

Answer:

Explanation:

Work done in lifting the weight once = mgh

= 20 x 9.8 x (1.9+1.7)

= 705.6 J  

= 705.6 / 4.2 calorie

= 168 cals

Total energy to be spent = 600 x 10³ cals

No of times weight is required to be lifted

= 600 x 10³ / 168

= 3.57  x 10³ times

Total time to be taken = 2 x 3.57 x 10³

= 7.14 x 10³ s

=119 minutes .

4 0
3 years ago
Galileo’s pendulum theory stated that the time taken to swing through one complete cycle of a pendulum depends on what?
Amanda [17]

Answer: it depends on the mass of the pendulum or on the size of the arc through which it swings.

Explanation:

7 0
3 years ago
How much work can be done in 30 seconds by a 1000-watt microwave oven?
iris [78.8K]
Half of it can be be at 1000 watt microwave oven!!!                                                                                                                                                                                                                                                                                                            I hope it help!!!!!!
7 0
3 years ago
Read 2 more answers
Other questions:
  • Elements are arranged in the periodic table based on various patterns. For example, the element magnesium (Mg) A. has a higher a
    11·1 answer
  • While doing a lab, a student found the density of a piece of pure aluminum to be 2.85 g/cm. The accepted value for the density o
    10·1 answer
  • How does adding energy to matter by heating it affect the energy of its particles
    15·1 answer
  • A pair of narrow, parallel slits separated by 0.254 mm are illuminated by green light of wavelength 559 nm. An interference patt
    6·1 answer
  • Which of the following is not a benefit of improved cardio-respiratory fitness?
    7·1 answer
  • The waste product of photosynthesis is:
    12·1 answer
  • What three factors control the path of a surface current
    9·1 answer
  • A person who studies physics is known as
    5·2 answers
  • What is the wave speed of a 6 m wave with a frequency of 20 Hz?
    8·1 answer
  • The current produced by electromagnetic induction is greater when...
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!