1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
umka21 [38]
3 years ago
9

Joan’s initial nickel (II) chloride sample was green and weighed 4.3872 g. After the dehydration reaction and removal of excess

thionyl chloride, the residue was yellow, and had a mass of 2.3921 g.
(a) Was the nickel chloride sample a hydrate? ___________________
(b) If the data indicates a hydrate, calculate x, the number of waters of hydration.
Show your work.
Chemistry
1 answer:
ANEK [815]3 years ago
4 0

Answer:

a) yes, it was an hydrate

b) the number of waters of hydration, x = 6

Explanation:

a) yes it was an hydrate because the mass decreased after the process of dehydration which means removal of water thus some water molecules were present in the sample.

b) NiCl2. xH2O

mass if dehydrated NiCl2 = 2.3921 grams

mass of water in the hydrated sample = mass of hydrated - mass of dehydrated = 4.3872 - 2.3921 = 1.9951 g which represent the mass of water that was present in the hydrated sample.

NiCl2.xH2O

mole of dehydrated NiCl2 = m/Mm = 2.3921/129.5994 = 0.01846 mole

mole of water = m/Mm = 1.9951/18.02 = 0.11072 mole

Divide both by the smallest number of mole (which is for NiCl2) to find the coefficient of each

for NiCl2 = 0.01846/0.01846 = 1

for H2O = 0.11072/0.01846 = 5.9976 = 6

thus the hydrated sample was NiCl2. 6H2O

You might be interested in
What does a plant produce during photosynthesis? A. Oxygen and glucose B. Carbohydrates and carbon C. Carbon, oxygen, and hydrog
Nataliya [291]

Answer:

im pretty sure b

Explanation:

3 0
3 years ago
What is the percent yield of the purification system
Jlenok [28]

Answer: 90.3

Explanation:

3 0
3 years ago
Are the properties of Rubidium more similar to those of cesium or those of strontium?
fenix001 [56]

More similar to Cesium

Explanation:

The properties of Rubidium are more similar to those of cesium compared to strontium.

Elements in the same group on the periodic table have similar chemical properties.

  • Rubidium and Cesium are located in the first group on the periodic table.
  • Other elements in this group are lithium, sodium, potassium and francium
  • Strontium belongs to the second group on the periodic table.
  • The first group have a ns¹ valence shells electronic configuration.
  • They are all referred to as alkali metals

Learn more:

Sodium brainly.com/question/6324347

Periodic table brainly.com/question/1704778

#learnwithBrainly

#learnwithBrainly

5 0
3 years ago
What was the slope of the best fit line<br>​
lions [1.4K]

Answer:

sorry I don't really know

5 0
3 years ago
Read 2 more answers
A balloon is filled with 100.0 Lair at 1.300 atm pressure. what pressure is needed to change the volume to 25.00 L
valentinak56 [21]

Answer:

4 atmospheric pressure is needed to get a volume of 25 litres

5 0
2 years ago
Other questions:
  • What does a graph with no trend indicate about the variables?
    5·1 answer
  • Horsetail are helpful for treating
    15·1 answer
  • Suppose 4 moles of a react with excess amount of b to produce 382.5 g of c, calculate the percent yield of
    14·1 answer
  • What happens if a species is unable to adapt to a changing environment.
    11·1 answer
  • Which of these reactions can be classified as synthesis reactions?
    6·1 answer
  • +<br>|<br>+<br>+<br>that this atom is neutral? <br>​
    7·2 answers
  • Whch is more acidic, a solution with a pH of 2 or 5
    10·2 answers
  • Help me, no links, no i don't knows. reading science sheet
    5·2 answers
  • If you were a given a beaker containing a clear solution (with no solid solute at the bottom), what simple test would you do to
    12·1 answer
  • If a calm person with a lung capacity of 3.5 liters and a body temperature of 360 C gets angry, what will the volume of the pers
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!