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zepelin [54]
2 years ago
11

Which of the following are good conductors

Chemistry
2 answers:
dimulka [17.4K]2 years ago
5 0

Answer:

iron, graphite,NaCl solution etc are some examples of good conductor of electricity

Zolol [24]2 years ago
4 0

Answer:

iron is because it is very important and powerful

..

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Calculate the amount of heat energy, in kJ, needed to increase the temperature of 200g of water by 300 C.
shtirl [24]

Answer:

Q = 246 kJ

Explanation:

It is given that,

Mass of water, m = 200 g

Let initial temperature, T_i=5^{\circ}

Final temperature of water, T_f=300^{\circ} C

We know that the specific heat capacity of water, c=4.18\ J/g-^{\circ} C

So, the heat energy needed to raise the temperature is given by :

Q=mc\Delta T\\\\Q=200\times 4.18\times (300-5)\\\\Q=246620\ J

or

Q = 246 kJ

So, the heat energy of 246 kJ is needed.

8 0
3 years ago
Near the shore ,winds tend to blow out toward the water at night.what drives this process
Alisiya [41]
Warm air from above the water rises and is replaced by the cool air from the shore
6 0
2 years ago
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-
Dovator [93]

Answer:

5 × 10^-4 L

Explanation:

The equation of the reaction is;

2KClO3 = 2KCl + 3O2

Number of moles of KClO3 = 13.5g/122.5 g / mol = 0.11 moles

From the stoichiometry of the reaction;

2 moles of KClO3 yields 3 moles of O2

0.11 moles of KClO3 yields 0.11 × 3/2 = 0.165 moles of oxygen gas

From the ideal gas equation;

PV= nRT

P= 85.4 × 10^4 KPa

V=?

n= 0.165

R= 8.314 J K-1 mol-1

T= 40+273 = 313K

V= 0.165 ×8.134 × 313/85.4 × 10^4

V=429.4/85.4 × 10^4

V= 5 × 10^-4 L

3 0
3 years ago
What is work?
cluponka [151]

Answer:

A:force times an object displacement

Explanation:

5 0
3 years ago
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In a chemical reaction, an atom of lithium (Li) loses an electron, and an atom of chlorine (Cl) gains an
Blababa [14]

Answer:

a

Explanation:

Li will have + charge and Cl with - charge.. Positive and negative attract each other forming ionic bond

4 0
2 years ago
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