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Shkiper50 [21]
3 years ago
13

**answer asap with explanation please

Chemistry
1 answer:
pantera1 [17]3 years ago
3 0

Answer:

It is a double replacement reaction, and all four compounds are different.

Step-by-step explanation:

The equation for the reaction is

\underbrace{\hbox{ ionic compound + ionic compound}}_{\hbox{reactants}} \longrightarrow  \underbrace{\hbox{ ionic compound + ionic compound}}_{\hbox{products}}

This must be a double replacement reaction, in which the metal cations trade partners and all four compounds are different.

(A) and (C) are <em>wrong</em>, because single replacements involve elements in reactions of the type

element + compound ⟶ element + compound

(D) is <em>wrong</em> because, if each compound retained the same set of ions, there would be no reaction.  

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Name the unit being abbreviated in each measurement (spelling counts). Only write the name of the unit, do not include the numbe
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Answer:

Litre (L) , Centimetre (cm) , Kilogram (Kg), Seconds (s) and Kelvin (K)

Explanation:

The units are used for the following measurement;

Litre = Volume

Centimetre = Length

Kilogram = Mass

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An element has ccp packing with a face-centered cubic unit cell. its density is 8920 kg/m3 and the unit cell volume is 4.72 x 10
ziro4ka [17]
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How many moles of KBr are present in 500 ml of a 0.8 M KBr solution?
faltersainse [42]

Answer:

2) 0.4 mol

Explanation:

Step 1: Given data

  • Volume of the solution (V): 500 mL
  • Molar concentration of the solution (M): 0.8 M = 0.8 mol/L

Step 2: Convert "V" to L

We will use the conversion factor 1 L = 1000 mL.

500 mL × 1 L/1000 mL = 0.500 L

Step 3: Calculate the moles of KBr (solute)

The molarity is the quotient between the moles of solute (n) and the liters of solution.

M = n/V

n = M × V

n = 0.8 mol/L × 0.500 L = 0.4 mol

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