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Mice21 [21]
3 years ago
9

Write the formulas of the following compounds:

Chemistry
1 answer:
ddd [48]3 years ago
5 0

Answer:

a) Chloride dioxide  

     ClO_2

b) Di nitrogen tetra oxide

   N_2O_4

c) Potassium phosphide

   H_2K_3P^{+2}

d) Silver -Ag

e) Aluminium nitride - AlN

f) Silicon dioxide

 SiO_2

I) Sulfide

S^{2-}

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The walls in your home have 25mm of expanded polystyrene (R-value 3.96) and 25mm of rigid urethane foam (R-value 7.50). What is
Finger [1]

Answer:

3.6 per inch

EPS insulation features an average r-value of 3.6 per inch.

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Explanation:

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7 0
3 years ago
Which criteria determine whether a heterogeneous mixture is a colloid or a suspension?
vivado [14]
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Reason:
Particle size in colloidal solution ranges from 1-100 nm, while that is suspension is more than 100 nm. Due to large particle size, particles in suspension settle down, upon standing for long. Thus, the best </span>criteria determine whether a heterogeneous mixture is a colloid or a suspension is to check <span>whether the particles do not settle for an extended period of time</span>
5 0
3 years ago
Read 2 more answers
How many moles of KCl are in 2 L of 2.5 M KCl solution?
beks73 [17]
2.5LX2 M=5 moles

As Molarity X Volume= Total Number of Moles
3 0
3 years ago
Which statement is true about oxidation and reduction in an electrochemical cell?
Mila [183]

Answer : The correct option is, (3) Oxidation occurs at the anode and reduction occurs at the cathode.

Explanation :

Electrochemical cell : It is a type of device which is used to convert the chemical energy into electrical energy during the redox reaction.

In the electrochemical cell, there are two electrodes. The electrode on which the oxidation takes place is called the anode (or negative pole) and the electrode on which the reduction takes place is called the cathode (or positive pole). This cell is connected by the salt bridge.

In the external circuit, the electrons flow from the anode (negative pole) to cathode (positive pole) through the voltmeter.

In the inner circuit, the ions flow through the salt bridge.

Hence, the correct option is, (3) Oxidation occurs at the anode and reduction occurs at the cathode.

7 0
3 years ago
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The number of moles of chloride ions in 250 ml of 4.00 M MgCL2
Tamiku [17]
If you mean 4 moles per litre then:
In 1 litre there is 4 moles, therefore in .25 litres there is 1 mole.
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So the answer is 2 moles of Chloride ions.        
6 0
3 years ago
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