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Sav [38]
3 years ago
12

Which element is identified by the chemical symbol C?

Chemistry
1 answer:
GrogVix [38]3 years ago
3 0

Answer:

B Carbon

Explanation:

I really hopes this helps you!

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1) In what state or phase do most ionic compounds occur? A) Solid. B) Liquid. C) Gas. D) Plasma. 2) The compound CO is an exampl
ELEN [110]
1)The state or phase in which most ionic compounds occur will be a solid state or phase. This will make the correct answer A. 

2) The compound Co is an example of a covalent compound. This will make the answer to be D. 
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4 years ago
How many poles does a magnet have?
GREYUIT [131]

Answer:

two poles

A magnet is any object that produces its own magnetic field that interacts with other magnetic fields. Magnets have two poles, a north pole and a south pole. The magnetic field is represented by field lines that start at a magnet's north pole and end at the south pole.

Explanation:

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7 0
3 years ago
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Write a balanced chemical equation, including physical state symbols, for the decomposition of solid calcium carbonate (CaCO_3)
nadya68 [22]

Answer:

CaCO₃(s) → CaO(s) + CO₂(g)

Explanation:

The decomposition reaction always make two compounds from one.

The products always have simpler chemical structure, originated from a determined compound. This can happens  spontaneously or by a third party.

A notable example of decomposition is hydrolysis. As for example the case of water, which decomposes and generates oxygen and hydrogen gas

2H₂O (l) → 2 H₂ (g) + O₂ (g)

In this case, the calium carbonate decomposes into CaO and CO₂

These two, are the products of the decomposition.

Of course, the unique reactant is the Calcium Carbonate

The balanced equation is:

CaCO₃(s) → CaO(s) + CO₂(g)

6 0
4 years ago
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A sample of N2 gas occupying 800.0 mL at 20.0°C is chilled on ice to 0.00°C. If the pressure also drops from 1.50 atm to
Studentka2010 [4]

Answer:

We will use the combined gas equation.

The final volume V₂=931.74 mL

Explanation:

The combined gas equation shows the interrelationship between the volume, the pressure and the absolute temperature of a fixed mass of an ideal gas,

P₁V₁/T₁=P₂V₂/T₂

Because we are looking for the volume after the initial conditions havre been varied, we will call this volume, volume 2 ( V₂)

Let us make it the subject of the equation.

V₂=(P₁V₁T₂)T₁P₂

P₁=1.50 ATM

P₂=1.20 ATM

V₁=800 mL

V₂=?

T₁=(20+273)K=293 K

T₂=0+273 K=273 K

V₂=(1.50 ×800×273)/(293×1.2)

V₂=931.74 mL

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4 years ago
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