All categories

3 years ago

Which of the following is true about an ionic compound?

Chemistry

2 answers:

Yuri [45]3 years ago

4 0

Answer:

The true ones are

B. It is held together by ionic bonds.

C. It is composed of anions and cations

Explanation:

A is not true because even though it is true that a salt is an ionic compound, some ionic compounds are not salts. Some are metal oxides, some are acids, bases and a variety of different compounds which, though ionic are not salts

Genrish500 [490]3 years ago

3 0

<span>D. all of the above because ionic compound is a salt. it is also held together by ionic bonds. it has anions and cations </span>

You might be interested in

Which statement best describes the formula equation Cl2(g) + 2KBr(aq) mc014-1.jpg 2KCl(aq)+ Br2(l)?

Nastasia [14]

The statement that describes the chemical reaction is D chlorine gas reacts with potassium bromide to form potassium chloride in solution and liquid bromide<span>. The symbol "Cl" represents chlorine. The symbols in the brackets show the physical state of the substance, (g) is gaseous, (s) is solid, (aq) is aqueous and (l) is liquid.</span>

7 0

3 years ago

Read 2 more answers

A green laser pointer emits light with a wavelength of 542 nm. What is the frequency of this light?

ehidna [41]

As we know that wavelength and frequency is inversely proportional to each other. Greater the wavelength smaller the frequency and vice versa.

Solution:

The relation between wavelength and frequency is as follow,

υ = c / λ

where
  υ = frequency = ?
c = velocity of light = 3.0 × 10⁸ ms⁻¹
  λ = wavenumber = 542 nm = 542 × 10⁻⁹ m
Putting the given values,

  υ = 3.0 × 10⁸ ms⁻¹ / 542 × 10⁻⁹ m
Result:
  υ = 5.53 × 10¹⁴ s⁻¹

6 0

3 years ago

What is the mass in grams of 0.0015 mol of aspirin (C9H8O4)

almond37 [142]

Answer:

116.1 g

Explanation:

3 0

2 years ago

Read 2 more answers

The sodium-potassium pump is called an electrogenic pump because it

kvv77 [185]

Answer:

Contributes to the membrane potential.

Explanation:

Sodium-potassium pump: In cellular physiology, a protein which is identified in many cells that helping in to maintain the higher concentration of potassium ions inside than that is in the surrounding medium and maintain the lower concentration of sodium ions inside than that of the surrounding medium.

This unbalanced charge transfer contributes in the separation of charge across the cell membrane. Sodium-potassium pump is known for important contributor to action potential which is produce by nerve cells.

8 0

3 years ago

Two samples of sodium chloride with different masses were decomposed into their constituent elements. One sample produced 1.731.

Amanda [17]

Answer:

The answer to your question is letter c) 6.09 g of sodium and 9.38 g of chlorine.

Explanation:

This problem is solve using rule of three

We know that the proportion Sodium to Chloride is 1 to 1 in sodium chloride, so we have to look for this proportion in the options

AM Sodium = 23 g

AM Chlorine = 35.5 g

Sodium Chlorine

23 g ---------------- 1 mol 35.5 g -------------- 1 mol

1713.73g ------------- x 2666.6 g ------------- x

x = 1713.73/23 = 74.51 x = 2666.6/35.5 = 75.12

These values are very similar, we have to look for the proportion in the options

a) 6.09g of sodium = 0.26 mol

4,87 g of chlorine = 0.14 mol These numbers are not very similar

b) We have 0.26 mol of Na

0.037 mol of Cl This is not the answer

c) We have 0.26 mol of Na

0.26 mol of Cl These numbers are the same, the proportion is 1:1, this is the answer

d) We have 0.26 mol of Na

0.36 mol of Cl This is not the answer

8 0

3 years ago