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Hunter-Best [27]
3 years ago
14

Which piece of evidence would suggest an unknown substance is an ionic compound?

Chemistry
1 answer:
Triss [41]3 years ago
7 0
The piece of evidence would suggest an unknown substance is an ionic compound is that it conducts electricity when dissolved in water. 
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What mass of sodium hydroxide is needed to neutralise 24.5kg of sulfuric acid <br> H2SO4 + N2 = 2NH3
sveticcg [70]

Answer:

23.92 g

Explanation:

Molar mass of H2SO4 = (2×1)+32+(16×4)= 2+32+48= 82g/mol

H2SO4 + 2NaOH ---> Na2SO4 + 2H2O

I mole of H2SO4 = 2 moles of NaOH

24.5/82 = 24.5/82 × 2

= 0.598 moles of NaOH will neutralize

Mass= mole× molar mass

Molar mass of NaOH= 23+16+1 = 40g/mol

Mass= 0.598 × 40 = 23.92g of NaOH

7 0
3 years ago
How many valence electrons does Iron (Fe) have? How do you know?
kramer
0 because it’s a transition metal
6 0
3 years ago
Physical and chemical properties of Salicylic Acid?
LUCKY_DIMON [66]

Answer:

Salicylic acids are clear white needle shaped crystal in room temperature and are used in pharmaceutical industries to produce analgesic.

Explanation:

  • Salicylic acids are aromatic organic compound also known as monohydroxybenzoic acid which is lipophilic in nature.
  • the physical properties are :
  1. they are colorlesss and odourless at room temperature.
  2. boiling point is 211°C and melting point is 315°C
  3. they are poorly soluble in water
  4. its saturated solution has pH of 2.4
  • the chemical properties are:
  1. acytylation of hydroxy group in salicylic acid gives acytylsalicylic acid which is used as aspirin.
3 0
3 years ago
A 50.0 mL of 0.88 M H2O2 and 10.0 mL of 0.50 M Fe(NO3)3 were combined and a temperature change of 7.47 was observed. The specifi
Shtirlitz [24]

Answer:

The heat of reaction -1.9 kilo Joules.

Explanation:

Volume of the hydrogen peroxide solution = 50.0 mL

Volume of the ferric nitrate solution = 10.0 mL

Total volume of the solution = 50.0 mL + 10.0 mL = 60.0 mL

Mass of the final solution = m

Density of water = density of the final solution = d = 1 g/mL

Mass=density\times Volume

m=1 g/ml\times 60.0 ml=60.0 g

Heat capacity of the mixture = c = 4.18 J/g°C

Change in temperature of the mixture = ΔT = 7.47°C

Heat absorbed by the mixture = Q

Q=mc\Delta T

Q=60.0 g\times 4.18 J/g ^oC\times 7.47 ^oC=1873.48 J=1.873 kJ\approx 1.9 kJ

Heat release due to reaction = -Q'

-Q' =Q (law of conservation of enrage)

Q'= -Q = -1.9 kJ

The heat of reaction -1.9 kilo Joules.

7 0
4 years ago
En imaginary gas which perfectly obeys the gas laws is called<br> surreal , virtual , ideal
Ksivusya [100]

Answer:

  • Ideal Gas is ur answer to the question

<h3>Hope this helps you XD ✌️</h3>
3 0
2 years ago
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