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Jet001 [13]
3 years ago
7

CuCO3(s) + 2HCl(aq) → CuCl2(aq) + H2O(l) + CO2(g). Which statement correctly describes the substances in this reaction?

Chemistry
1 answer:
navik [9.2K]3 years ago
4 0

So,

All you need to do is read the physical states ( ) to determine the answer.

CuCO3 is solid.

HCl is in aqueous solution.

CuCl2 is in aqueous solution.

H2O is liquid.

CO2 is gas.

It is then easy to see that option D is true.  CuCO3 is the solid reactant, and CO2 is the gas product.

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What is the valency of Al2O3 and why?
riadik2000 [5.3K]
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7 0
3 years ago
When large masses of magma solidify very slowly far below earths surface, they form igneous rocks that have a ___?
evablogger [386]

The answer is; D,

Because these rocks cool slowly, the rocks are able to form large crystals hence giving the rock a coarse texture. These crystals are big enough to be viewed with the unaided eye. The opposite is extrusive rocks that form on the surface of the earth. These cool rapidly and form fine-grained textured rocks because of the small crystals formed during the rapid cooling process.


4 0
3 years ago
A 250 cm^3 solution containing 1,46 g of sodium chloride is added to an excess of silver nitrate solution. The reaction is given
faust18 [17]

Answer:

The mass of the precipitate  that AgCl is 3.5803 g.

Explanation:

a) To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Mass of solute (NaCl) = 1.46 g

Molar mass of sulfuric acid = 58.5 g/mol

Volume of solution = 250 cm^3 =250 mL

1 cm^3= 1 ml

Putting values in above equation, we get:

\text{Molarity of solution}=\frac{1.46g\times 1000}{58.5g/mol\times 250}\\\\\text{Molarity of solution}=0.09982 M

0.09982 M is the concentration of the sodium chloride solution.

b) NaCl (aq)+AgNO_3 (aq)\rightarrow AgCI(s)+NaNO_3(aq)

Moles of NaCl = \frac{1.46 g}{58.5 g/mol}=0.02495 mol

according to reaction 1 mol of NaCl gives 1 mol of AgCl.

Then 0.02495 moles of NaCl will give:

\frac{1}{1}\times 0.02495 mol=0.02495 mol of AgCl

Mass of 0.02495 moles of AgCl:

0.02495 mol\times 143.5 g/mol=3.5803 g

The mass of the precipitate  that AgCl is 3.5803 g.

3 0
4 years ago
The highest energy level of sodium contains ________ electron(s).
Effectus [21]

Answer:

A

Explanation:

The group number of an element is equal to the number of electrons the outermost shell (or highest energy level) contains

8 0
4 years ago
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