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choli [55]
3 years ago
14

The three states of matter can be arranged in the increasing order of interparticle forces as 1) gas > liquid >solid 2) so

lid >liquid > gas 3) liquid > gas > solid pls answer fast
Chemistry
1 answer:
Nat2105 [25]3 years ago
5 0

Answer:

OPTION 2 SOLID>LIQUID>GAS

Explanation:

because the inter molecular forces are the strongest in the solid than in liquid and than in gas

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The metalloid that has three valence electrons is .
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Boron

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How many cm are in 29.7km?​
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A sample of 14.5 g of sodium bicarbonate (NaHCO3) was dissolved in 100 ml of water in a coffee-cup calorimeter with no lid by th
Ann [662]

Answer:

The ΔH of the reaction is + 12.45 KJ/mol

Explanation:

Mass of water= 100ml = 100g. (You should always assume 1cm3 of water as 1g)

heat capacity of water = 4.18 Jk-1 Mol-1

Change in temperature = (19.86 - 25.00) = -5.14 K (This is an endothermic reaction because of the fall in temperature)

Molar mass of NaHCO3 = 84 g/mol

Mole of NaHCO3 = 14.5 / 84 = 0.173 mol

Step 1 : Calculate the heat energy (Q) lost by the water.

            Q = M x C x ΔT

            Q = -100 x 4.18 x (-5.14)

            Q = 2148.5 joules

            Q = 2.1485 K J

Step 2: Calculating the ΔH of the reaction?

          ΔH = Q / number of moles of NaHCO3

          ΔH = 2.1485 / 0.173

          ΔH = 12.42 KJ/mol

3 0
3 years ago
Alloy metals are classified as homogeneous mixtures because
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a

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6 0
3 years ago
How many moles of MgCl2 will be produced from 65.0g of Mg(OH)2 , assuming HCl is available in excess
Butoxors [25]

Answer:

1.12 moles of MgCl₂

Explanation:

Given parameters:

Mass of Mg(OH)₂  = 65g

Unknown:

Number of moles of MgCl₂ = ?

Solution:

To solve this problem, obtain a balanced reaction equation first;

           Mg(OH)₂  +   2HCl    →    MgCl₂   +   2H₂O

From the reaction above, this is a typical neutralization process in which an acid reacts with a base to produce salt and water only.

Let's proceed; the reactant in excess is the HCl, acid. The other reactant is the  Mg(OH)₂ and it must be the limiting reactant. A limiting reactant is one that is given in short supply and determines the extent of the reaction.

Find the number of moles of Mg(OH)₂;

   Number of moles  = \frac{mass}{molar mass} \\

     Molar mass of  Mg(OH)₂ = 24 + 2(16 + 1)  = 58g/mol

  Number of moles  = \frac{65}{58}    = 1.12moles

The balanced reaction equation shows that;

               1 mole of  Mg(OH)₂ gives 1 mole of MgCl₂

            1.12 mole of Mg(OH)₂ will produce 1.12 moles of MgCl₂

6 0
3 years ago
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