Chemistry, 26.11.2019 22:31, vicky10445

For each reaction below, write the balanced equation.

Answers: 1

Show answers

Answers

answered: Mastersonisnot

Explanation:

Al + O₂ → AlO₂

Balanced chemical equation:

Al + O₂ → AlO₂

In this equation Aluminium is reducing agent while oxygen is oxidizing agent.

K + Br₂ → KBr

Balanced chemical equation:

2K + Br₂ → 2KBr

This is balanced chemical equation because there are equal number of potassium and bromine atoms are present on both side of equation.

Mg + HCl → MgCl₂ + H₂

Balanced chemical equation:

Mg + 2HCl → MgCl₂ + H₂

This is balanced chemical equation because there are equal number of magnesium, hydrogen and chlorine atoms are present on both side of equation.

Al + O₂ → Al₂O₃

Balanced chemical equation:

4Al + 3O₂ → 2Al₂O₃

This is balanced chemical equation because there are equal number of aluminium and oxygen atoms are present on both side of equation.

Na + MgF₂ → NaF + Mg

Balanced chemical equation:

2Na + MgF₂ → 2NaF + Mg

This is balanced chemical equation because there are equal number of sodium, magnesium and fluorine atoms are present on both side of equation.

Na + HCl → NaCl + H₂

Balanced chemical equation:

2Na + 2HCl → 2NaCl + H₂

This is balanced chemical equation because there are equal number of sodium, hydrogen and chlorine atoms are present on both side of equation.

SiO₂ + HF → SiF₄ + H₂O

Balanced chemical equation:

SiO₂ + 4HF → SiF₄ + 2H₂O

This is balanced chemical equation because there are equal number of silicon, oxygen and fluorine atoms are present on both side of equation.

FeS₂ + O₂ → Fe₂O₃ + SO₂

Balanced chemical equation:

4FeS₂ + 11O₂ → 2Fe₂O₃ +8 SO₂

answered: Guest

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

answered: Guest

i think it's letter a.

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 21:20, brendonvernon8

Juju.01) 5 geologic events a group of students designed an experiment in an ice rink to represent the solar system. the steps of the experiment are listed below. 5: geologic events 1. choose a student to represent the sun. the planets are represented by two tennis balls. 2. ask the student to hold the tennis balls in each palm and spin on the ice with arms stretched out. 3. ask the student to draw in the arms after about 10 spins. 4. observe the student's arms rotate faster when they are closer to the body. 05 geologic events enors) the experiment most likely demonstrates that (2 points) 07 discussion-based sessment/module planets exert gravitational force on the sun the sun exerts gravitational force on the planets 3.07 discussion-based ssessment speed of a planet depends on its distance from the sun new version available! (3.0.119) get it now submit 18.07: module exam description

Answers: 3

continue

Chemistry, 22.06.2019 22:00, td347

11) burning your hand when accidentally touching a hot plate is an example of which heat transfer? a. conduction b. convection c. radiation d. none of these

Answers: 2

continue

Chemistry, 23.06.2019 01:20, michellectucker1982

Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)

Answers: 1

continue

Chemistry, 23.06.2019 10:00, agerald

1.9 mol hcl and 3.9 mol naoh react according to the equation hcl + naoh −→ nacl + h2o . if the limiting reactant is hcl, calculate the amount of nacl formed.

Answers: 1

continue

Do you know the correct answer?

For each reaction below, write the balanced equation.
...