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3 years ago

Which compound contains both ionic and covalent

2 answers:

4 0

The answer is (1) CaCO3. The bond between C and O is covalent bond. And the bond between Ca2+ and CO3 2- ion is the ionic bond. So the compound CaCO3 satisfy this condition.

lianna [129]3 years ago

3 0

Answer: The correct answer is option (A).

Explanation:

Covalent bonds are those bonds in which sharing of an electrons is present in between the two atoms. Generally this type of bonding is found when electro-negativity difference between is very less or zero.

Ionic bonds are those bonds in which complete transfer of an electrons from one atom to another atom is present.Generally this type of bonding is found when electro-negativity difference between two atoms is very large.

Compound $CaCO_3$ contains both ionic and covalent bonds.

Bond between carbon and oxygen atoms in carbonate ion is a covalent bond. Being a ploy-atomic ion it carries 2- charge.
Calcium ion being 2+ charge will form ionic bond with carbonate ion.

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Two compounds are standing at the same temperature. Compound "A" is evaporating more slowly than compound "B." According to the

frosja888 [35]

Answer:

Option D) Compound B may have a lower molecular weight.

Explanation:

Compound A and B are standing at the same temperature yet compound A is evaporating more slowly than compound B.

This simply indicates that compound B have a lower molecular weight than compound A.

This can further be seen when gasoline and kerosene are placed under same temperature. The gasoline will evaporate faster than kerosene because the molecular weight of the gasoline is low when compared to that of the kerosene.

4 0

3 years ago

Help I'm giving you a lot of points and do not put random or crazy stuff the real question

dybincka [34]

Answer:

Endothermic

Explanation:

Because Endothermic is cold and exothermic is hot and if you are using an ice pack it would be Endothermic and if you were using something that was hot it would be exothermic

6 0

3 years ago

Choose all the answers that apply.

ziro4ka [17]

Answer:

1, 5, 3

Explanation:

7 0

2 years ago

Read 2 more answers

Muscles cells are called?

evablogger [386]

Answer:

They are called Myocyte.

Explanation:

A myocyte is said to be the type of cells that is found in muscle tissue. They are structurally long and also posses tubular cells that inhibits develop from myoblasts to form myogenesis process which are muscles.

Within a skeletal muscle fibre, there are many myocytes. arranged parallel to one another which gives the fibre a striated appearance. They are contractile parts of the muscle fibre.

Also, different forms of these myocytes has different qualities in our body muscles found in the cardiac, skeletal, and smooth muscle cells.

6 0

3 years ago

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A 75 g piece of gold (Au) at 1000 K is dropped into 200 g of H2O at 300K in an insulated container at 1 bar. Calculate the tempe

Deffense [45]

Answer:

The temperature of the system once the equilibrium has been reached = 372.55K

Explanation:

Heat capacity of gold = 129 J/Kg*c.

Heat capacity of water

4,184 J/Kg*c.

Mass of gold = 75g = 0.075Kg

Mass of water = 200g = 0.2Kg

From conservation of energy

m1×C1×(t11 - t2) = m2×C2×(t2- t21)

Substituting we have

0.075 × 129×(1000-t2) = 0.2× 4184×( t2 -300) =solving for t2, we have

933.55×t2 = 347790

or t2 = 372.55K

The temperature of the system once the equilibrium has been reached = 372.55K

6 0

3 years ago