Chemistry, 26.11.2019 22:31 vicky10445

For each reaction below, write the balanced equation.

Answers: 1

Show answers

Answers

Answer from: 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

Answer from: Quest

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

Answer from: Quest

"the periodic table is arranged in order of atomic number."

Another question on Chemistry

Chemistry, 21.06.2019 21:30

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

Answers: 1

Answer

Chemistry, 22.06.2019 03:30

Each pair of clay balls represents to planetesimals if each plane test molluscum pound of the same material and is separated by the same distance which pair experiences the greatest gravitational attraction

Answers: 2

Answer

Chemistry, 22.06.2019 05:30

What is the mass of 4 molecules of co2

Answers: 1

Answer

Chemistry, 22.06.2019 07:00

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

Answers: 2

Answer

You know the right answer?

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

Questions