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
Aliun [14]
3 years ago
11

11. A 4.175 gram sample of a certain hydrate of copper (II) sulfate, CuSO,• xH,O, is heated until all

Chemistry
1 answer:
Wewaii [24]3 years ago
3 0

The  formula of the hydrate = CuSO₄• 3H₂O

<h3>Further explanation</h3>

Given

4.175 grams sample CuSO₄• xH₂O

3.120 grams anhydrous compound CuSO₄

Required

The formula

Solution

mass of H₂O driven off :

= 4.175 - 3.12

= 1.055 g

MW CuSO₄ = 159.5 g/mol

MW H₂O = 18 g/mol

mol ratio of CuSO₄ : H₂O :

= 3.12/159.5 : 1.055/18

= 0.01956 : 0.05861

= 1 : 3

You might be interested in
QUESTION 51 Buffer capacity is best defined as: OA) Buffer capacity is the amount of acid or base that can be added to a buffer
Schach [20]

Answer:

The best definition is: "Buffer capacity is the amount of acid or base that can be added to a buffer without destroying its effectiveness"

Explanation:

A buffer is a solution that is somewhat resist to pH changes by reacting with acids and bases that may be added into the solution. It's capacity is the amounto of acid or base that can be added into solution without much change in pH.

So the best definition is: "Buffer capacity is the amount of acid or base that can be added to a buffer without destroying its effectiveness"

4 0
4 years ago
How many formula units are in 6.12 kg of lithium nitride
BartSMP [9]
There is 213 units i believe hope so
7 0
3 years ago
Some SO2 and O2 are mixed together in a flask at 1100 K in such a way ,that at the instant of mixing, their partial pressures ar
kakasveta [241]

Answer:

The answer is "\bold{0.525\ \ atm^{-1}}"

Explanation:

Given equation:

2SO_2(g) + O_2(g) \leftrightharpoons 2SO_3(g)

Given value:

\Delta rH =-198.2 \ \ \frac{KJ}{mol}

Kp=1100 \ K

\Delta x = 2-(2+1)\\\\

     = 2-(2+1)\\\\= 2-(3)\\\\= -1

\left\begin{array}{cccc}I\ (atm)&1&0.5&0\\C\ (atm)&2x&-x&2x\\E\ (atm)     &1-2x&0.5-x&2x\end{array}\right

calculating the total pressure on equilibrium=  (1-2x)+(0.5-x)+2x \ atm\\\\

                                                                         = 1-2x+0.5-x+2x\\\\= 1+0.5-x\\\\=1.5-x\\

\therefore \\\\\to 1.50-x= 1.35 \\\\\to 1.50-1.35= x\\\\\to 0.15= x\\\\ \to  x= 0.15\\\\

calculating the pressure in  So_2:

= (1-2 \times 0.15)

= 1-0.30 \\\\ =0.70 \ atm

calculating the pressure in  O_2:

= (0.5- 0.15)\\\\= 0.35 \ atm \\

calculating the pressure in  So_3:

= (2 \times 0.15)\\\\= (.30) \ atm \\\\

Calculating the Kp at 1100 K:

= \frac{(Pressure(So_3))^2}{(Pressure(So_2))^2 \times Pressure(O_2)}\\\\= \frac{0.30^2}{0.70^2 \times 0.35}\\\\= \frac{0.30 \times 0.30 }{0.70\times 0.70 \times 0.35}\\\\= \frac{0.09 }{0.49\times 0.35} \\\\= \frac{0.09 }{0.1715} \\\\=  0.5247 \ \  or \ \  0.525 \ \ atm^{-1}  \\\\

4 0
3 years ago
a mixture of oxygen, hydrogen, and nitrogen gases exerts a total pressure of 282 kpa. if the partial pressures of oxygen and hyd
dimaraw [331]
Pressures oxygen and hydrogen +  pressure nitrogen

110 Kpa + 106 Kpa = 216 Kpa

Partial pressure:

total pressure -  exerted by nitrogen:

282 Kpa - 216 Kpa

= 66 Kpa

hope this helps!
7 0
3 years ago
Read 2 more answers
Which best describes the role of a secondary consumer in a food web? (3 points)
kodGreya [7K]

Answer: c

Herbivore that feeds on primary consumers

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • If 355 mL of 1.50 M aluminum nitrate is added to an excess of sodium sulfate, how many grams of aluminum sulfate will be produce
    8·1 answer
  • True or False: If one extended structure is made of individual atoms, and another extended structure is made from molecules, dur
    6·1 answer
  • What are possible treatments for white blood cell disorders? Select all that apply.
    8·2 answers
  • Is nickel cyanide a ionic or covalent bond
    10·1 answer
  • Consider the following reaction at equilibrium. What will happen if FeS2 is added to the reaction? 4FeS2(s) + 11O2(g) ⇌ 2Fe2O3
    12·2 answers
  • 4.5 centimeters= km<br> please help me girl i’m not trying to fail science
    13·2 answers
  • Which helps explain why Mercury has many craters on its surface?
    14·1 answer
  • Pleaseeee help me only 29 and 30
    14·1 answer
  • PLZ HELP!!!!!!!!!!!!!!!
    6·1 answer
  • PLEASE HELP ME!! ILL GIVE BRAINLIEST PLEASE HELP IMMEDIATELY
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!