CHEMISTRY MIDDLE SCHOOL

Fill in the coefficients that will balance the following reaction: a0Cr2(SO4)3 + a1AgNO3 -> a2Cr(NO3)3 + a3Ag2SO4

Answers

Answer 1
Answer:

Answer:

a0=1

a1=6

a2=2

a3=3

Explanation:

We have to start with the reaction:

~Cr(NO_3)_3~+~Ag_2SO_4" alt="Cr_2(SO_4)_3~+~AgNO_3~->~Cr(NO_3)_3~+~Ag_2SO_4" align="absmiddle" class="latex-formula">

We have to start with "". If we want to balance Cr we have to obtain 2 on both sides. Therefore we have to add a "2" on the right side, so:

~2Cr(NO_3)_3~+~Ag_2SO_4" alt="Cr_2(SO_4)_3~+~AgNO_3~->~2Cr(NO_3)_3~+~Ag_2SO_4" align="absmiddle" class="latex-formula">

Then we can balance "" as a whole. We have 6 on the right, we have to have the same amount on the left side, so:

~2Cr(NO_3)_3~+~Ag_2SO_4" alt="Cr_2(SO_4)_3~+~6AgNO_3~->~2Cr(NO_3)_3~+~Ag_2SO_4" align="absmiddle" class="latex-formula">

Then we can balance "". We have 6 on the left, so we have to have the same amount on the right if we already have 2 we have to put a · in front (on the right side) to obtain in total 6, so:

~2Cr(NO_3)_3~+~3Ag_2SO_4" alt="Cr_2(SO_4)_3~+~6AgNO_3~->~2Cr(NO_3)_3~+~3Ag_2SO_4" align="absmiddle" class="latex-formula">

Finally, when we add this last number the we will have 3 on both sides. Therefore the reaction is already balanced.

Answer 2
Answer:

Answer

Explanation:

can you please put it in boxes so i can find out the answer


Related Questions

HIGH SCHOOL

What is the net charge of the ionic compound calcium fluoride

Answers

Answer:

  • The net charge of the ionic compound calcium fluoride is zero (0).

Explanation:

Ionic compounds, such as covalent ones, have zero net charge; this is, they are neutral.

Substances with net positive charge are cations and substances with net negative charge are anions.

The charges in the ionic compound calcium flouride are distributed in this way:

  • Compound formula: CaF₂

  • Calcium charge: Ca²⁺: this is, each calcium ion has a 2 positive charge

  • Fluoride charge: F⁻: each fluoride ion has a 1 negative charge.

  • Then, the net charge is: 1 × (2+) + 2 × (1-) = +2 - 2 = 0.

So, a two positve charge, from one calcium ion, is equal to two negative charges, from two fluoride tions, yielding a zero net charge.

MIDDLE SCHOOL

Describe how surface area affects the rate of a reaction.

Answers

The greater the surface area between reactants, the greater the rate of the reaction.
When there is more surface area, there are more surfaces and things to react on, and therefore the reaction would be faster
HIGH SCHOOL

Determine the number of moles of al needed to completely react with 9.0 moles of ni2

Answers

Answer: 6.0 moles

Explanation:

1) The information in the quesiton is incomplete.

2) The question is bases on a voltaic cell in which the reactants are

Al (NO₃) ₃ (aq) + Ni (NO₃) ₂ (aq).

3) And you are also given the net ionic reaction:
2Al(s) + 3Ni²⁺ (aq) → 2Al₃ (aq) + 3Ni(s)



4) It is from the net ionic reaction that you get the ration between Al and Ni:
2 moles of Al react with 3 moles of Ni, so you can state the proportion:

2 moles Al / 3 moles Ni = x / 9.0 moles Ni


5) So, you just must solve for x:

x = 9.0 moles Ni × 2 moles Al / 3 mols Ni = 6.0 moles Al


HIGH SCHOOL

If m represents an element in group 2 the formula of its chloride would be

Answers

Answer:

MCl₂

Explanation:

Elements in Group 2 of the periodic table are alkaline earth metals and they have 2 electrons in their valence shell. To follow the octet rule, they tend to lose 2 electrons, forming cations M²⁺. Chloride is an anion of formula Cl⁻. For a compound to be electrically neutral, it requires 1 atom of M²⁺ and 2 atoms of Cl⁻ so that the total charge is zero: +2 + 2.(-1) = 0. The resulting formula is MCl₂

The formula will be MX2 of a Group 2 metal halide.
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