What is correct about solubility of substances?

kap26 [50]

Answer: Balanced chemical equation will be :

$5SiO_2+2CaC_2\rightarrow 5Si+2CaO+4CO_2$

Explanation:

$SiO_2+CaC_2\rightarrow Si+CaO+CO_2$ (Unbalanced)

A balanced chemical reaction follows the Law of Conservation of Mass. which states in a chemical reaction mass can neither be created nor be destroyed. In other words total mass of the products is equal to the total mass of reactants.

Balanced chemical equation will be :

$5SiO_2+2CaC_2\rightarrow 5Si+2CaO+4CO_2$

3 0

4 years ago

Complete the acid-base reaction between butyric acid HC4H7O2 and potassium hydroxide KOH.

Lilit [14]

An acid-base reaction or a neutralization reaction is a chemical reaction that occurs between an acid and a base producing a salt and water. The acids and bases can be strong or weak depending on their degree of ionization in water.

Butyric acid is a weak acid and in water it is ionized in the following way, loosing a proton (H+):

HC4H7O2 (aq) ⇆ H+ (aq) + C4H7O2- (aq)

On the other hand, potassium hydroxide is a strong base, so it will be completely ionized in water:

KOH(aq) → K+(aq) + OH-(aq)

Then the net acid-base reaction between butyric acid and KOH is:

HC4H7O2 (aq) + OH- (aq) ⇆ H2O + C4H7O2- (aq)

It is valid to consider only the OH- produced from the ionization of KOH in water since, as mentioned, this molecule is completely ionized. Also, we do not include the K + in the net equation since it is a spectator ion, it does not undergo chemical changes.

6 0

4 years ago

Respitory system is responsible for the exchange of oxygen in conjunction with which other system to control breathing in humans

tester [92]

Respiratory system and circulatory system both are responsible to control the breathing in Human body.

3 0

4 years ago

If chlorine (nonmetal) has seven valence electrons while barium (metal) has

swat32

Answer: Two chlorine atoms

Explanation:

Chlorine is a nonmetal belonging to group 7 of the periodic table. It has an atomic number of 17 distributed as (2, 8, 7), so it has 7 valence electrons and needs JUST ONE to complete its outermost shell.

Cl + e- ---> Cl-

On the other hand, barium is a metal belonging to group 2 on the periodic table. It has an atomic number of 56 with 2

valence electrons in its outermost shell, and gives off the two electrons to form a stable octet structure.

Ba ----> Ba2+ + 2e-

Thus, barium loses its 2 outermost electrons to form a Ba2+ ion, while TWO chlorine atoms receive them to form 2Cl- resulting in an ionic bond in the compound, BaCl2 (Barium Chloride)

Ba2+ + 2Cl- ---> BaCl2

7 0

3 years ago

Read 2 more answers

For the following reaction, 5.20 grams of propane (C3H8) are allowed to react with 22.5 grams of oxygen gas. propane (C3H8) (g)

Sliva [168]

Answer:

15.58g of CO₂ is the maximum amount that can be produced

Explanation:

The propane reacts with oxygen as follows:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Where 1 mole of propane reacts with 5 moles of oxygen

To solve this question we need to find the moles of propane and oxygen to find limiting reactant using the chemical reaction:

Moles propane -Molar mass: 44.1g/mol-:

5.20g * (1mol / 44.1g) = 0.118 moles

Moles oxygen -Molar mass: 32g/mol-:

22.5g O₂ * (1mol / 32g) = 0.703 moles

For a complete reaction of 0.703 moles of oxygen are:

0.703 moles O₂ * (1mol C₃H₈ / 5mol O₂) = 0.141 moles of propane are necessaries. As there are just 0.118 moles of propane, propane is limiting reactant.

The moles of carbon dioxide that are produced are:

0.118 moles C₃H₈ * (3 moles CO₂ / 1 mol C₃H₈) = 0.354 moles CO₂

The maximum mass that can be produced is -Molar mass CO₂: 44.01g/mol-:

0.354 moles CO₂ * (44.01g / mol) =

15.58g of CO₂ is the maximum amount that can be produced

4 0

3 years ago