What is the chemical formula of magnesium bromide? A. MgBr2 B. MgBr C. Mg2Br2 D. Mg2Br

Select the correct answer.

777dan777 [17]

For this one B is the correct one

6 0

4 years ago

Read 2 more answers

Already solved but pls check !!

maw [93]

Answer:

yes

Explanation:

i also think the same

7 0

3 years ago

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Determine whether an aqueous solution of each of the following salts will be acidic, basic, or neutral. Ba3(PO4)2 NaCN

Andru [333]

<u>Answer:</u> Both the salts are basic salts.

<u>Explanation:</u>

Salts are formed when an acid reacts with a base during a neutralization reaction.

When a strong acid and a weak base reacts, it leads to the formation of acidic salt.

When a strong base and weak acid reacts, it leads to the formation of basic salt.

When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.

$Ba_3(PO_4)_2$ is a salt which is formed by the combination of $H_3PO_4\text{ and }Ba(OH)_2$ . Phosphoric acid is a weak acid and barium hydroxide is a strong base. So, the given salt is a basic salt.

$NaCN$ is a salt which is formed by the combination of $HCN\text{ and }NaOH$ . Hydrogen cyanide is a weak acid and sodium hydroxide is a strong base. So, the given salt is a basic salt.

Hence, both the salts are basic salts.

6 0

4 years ago

A sample of water contains 5.24 x 1022 molecules. How many moles are in this sample?

LekaFEV [45]

Answer:

0.087 moles of water

Explanation:

Given data:

Number of molecules of water = 5.24×10²² molecules

Number of moles of water = ?

Solution:

Avogadro number:

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules of water

5.24×10²² molecules × 1 mol / 6.022 × 10²³ molecules

0.87×10⁻¹ mol

0.087 mol

6 0

3 years ago

All of the following ionic compounds are soluble in water except for ___________? View Available Hint(s) All of the following io

aksik [14]

Answer: Option (b) is the correct answer.

Explanation:

Ionic compounds are the compounds formed by transfer of electrons from one atom to another.

Almost all ionic compounds are soluble in water but there are few exceptions. As it is known that hard-hard and soft-soft interactions are more favorable in nature. But hard-soft or vice-versa interactions are not favorable in nature.

Lead being a weak lewis acid and larger size has many electronic shells that shield its nuclear charge. Whereas chlorine is stabilized by hydrogen bonding in water. As a result, due to interaction between Pb and water molecules it remains insoluble when present as lead chloride.

Whereas Mg and Na being electron deficient (lewis acid) in nature will accept the lone pair of electrons from oxygen atom of water. As a result, they get stabilized and hence, become soluble in water.

$Pb(ClO_{4})_{2}$ is also soluble in water.

Thus, we can conclude that all of the following ionic compounds are soluble in water except for $PbCl_{2}$ .

4 0

4 years ago