All categories

3 years ago

What are the correct coefficients for the reaction below:

Chemistry

1 answer:

77julia77 [94]3 years ago

7 0

C was the answer i had and it was right

You might be interested in

How did we measure the production of oxygen in photosynthesis in this experiment Mosa Mack lesson 2

jok3333 [9.3K]

Answer:

If the discs floated, they produced oxygen and gained buoyancy.

6 0

2 years ago

Explain how the law of conservation of mass necessitates our balancing all chemical equations.

denis23 [38]

The law of conservation of mass states that energy can neither be created, nor destroyed. It applies to all the chemical equations because everything is about matter. Changing one chemical to another, changing forms, shapes, colors, types to other ones. But in each and every single process of this universe, nothing is created or destroyed. It's just the simplest to the most complex transfers of energy throughout the universe.
I hope this helped.

5 0

4 years ago

Alyssa is trying to balance the following equation: Pb(OH)2 + 2H2SO4 => PbSO4 + 2H20 What number should be used to replace th

olga nikolaevna [1]

Answer:

2 Pb(OH)2 + 2H2SO4 => 2 PbSO4 + 4 H20

Explanation:

Since there's no "?" shown in the equation, let's balance it and solve it entirely.

Pb(OH)2 + 2H2SO4 => PbSO4 + 2H20

1Pb + 10O + 6H + 2S ≠ 1Pb + 6O + 4H + 1S → it needs to be balanced.

To do this, let's start by looking at the elements that are only presnet once on each side:

On the products half, S is only present in PbSO4 → if we look at the reagents half, we can see it needs a "2" → then Pb is multiplied by 2 too → so Pb(OH)2 on the reagents half will also need a "2" → final count on O and H on the reagents side: 12O and 8H → to balance it, you need 4 water molecules on the products side.

6 0

3 years ago

How does the temperature and density change during convection

Alex777 [14]

Answer:

Density changes with temperature because volume changes with temperature. Density is mass divided by volume. As you heat something up, the volume usually increases because the faster moving molecules are further apart. Since volume is in the denominator, increasing the volume decreases the density.

Explanation:

4 0

3 years ago

How many moles of agcl are contained in 244 ml of 0.135 m agcl solution. the density of the solution is 1.22 g/ml?

Zanzabum

Answer is: 3,94·10⁻² moles of silver chloride are contained in 244 ml of solution.

V(AgCl) = 244 ml = 0,244 l.

b(AgCl) = 0,135 mol/kg.

d(AgCl) = 1,22 g/ml.

m(AgCl) = V(AgCl) · d(AgCl).

m(AgCl) = 244 ml · 1,22 g/ml.

m(solution AgCl) = 297,68 g.

m(AgCl) = 0,135 mol ·143,3 g/mol = 19,34 g.

ω = 19,34 g ÷ 19,34 g + 1000 g = 0,0189.

m(AgCl) = 0,0189 · 297,68 g = 5,64 g.

n(AgCl) = 5,64 g ÷ 143,3 g/mol = 0,0394 mol.

4 0

4 years ago

Read 2 more answers