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
anastassius [24]
3 years ago
13

mass of 6.584 g. After it is heated, it has a mass of 4.194 g. What is the percentage by mass of water in the hydrate?

Chemistry
1 answer:
Bad White [126]3 years ago
8 0
M₁=6.584 g
m₂=4,194 g

m(H₂O)=m₁-m₂

w(H₂O)=m(H₂O)/m₁

w(H₂O)=(m₁-m₂)/m₁

w(H₂O)=(6.584-4.194)/6.584=0.3630  (36.30%)

the percentage by mass of water in the hydrate 36.30

You might be interested in
Entropy increase from solid to liquid to gas. T/F
mariarad [96]

Answer: True

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

\Delta S is positive when randomness increases and \Delta S is negative when randomness decreases.

When the solid changes to liquid to gas ,the randomness of particles increases and hence \Delta S is positive and thus the entropy increases.

8 0
3 years ago
Read 2 more answers
You are given mixture made of 290 grams of water and 14.2 grams of salt. Determine the % by mass of salt in the salt solution.
marishachu [46]

Answer:

Solution is 4.67% by mass of salt

Explanation:

% by mass is the concentration that defines the mass of solute in 100g of solution.

In this case we have to find out the mass of solution with the data given:

Mass of solution = Mass of solute + Mass of solvent

Solute:  Salt → 14.2 g

Solvent: Water → 290 g

Solution's mass = 14.2 g + 290g = 304.2 g

% by mass = (mass of solute / mass of solution) . 100

(14.2 g / 304.2g) . 100 = 4.67 %

3 0
3 years ago
Which environmental changes occur fastest? oil spill changing seasons global warming pond succession Previous hurry plzz
ser-zykov [4K]
I’m not a 100% shure but I would personally say OIL SPILLS.
6 0
3 years ago
Definition of sound waves
vitfil [10]
Sound waves are waves of growing larger and smaller, making it seem elastic through substances, such as air.
7 0
3 years ago
Fill in the coefficients that will balance the following reaction: a0Na + a1H2O → a2NaOH + a3H2
Alexandra [31]
Hey there !  :

<span>2 Na + 2 H2O = 2 NaOH + 1 H<span>2

</span></span>Sodium<span> + </span>Dihydrogen Monoxide<span> = </span><span>Natriumhydroxid</span><span> + </span>Hydrogen

Coefficients:

Reagents  :  Na = 2
                    H2O = 2
   

Products :  NaOH = 2
                  H2 = 1
4 0
4 years ago
Read 2 more answers
Other questions:
  • Give three examples,from the lab where potential energy was converted to kinetic energy?​
    12·1 answer
  • What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The
    5·1 answer
  • Symbiosis is an interaction between two different organisms living in close physical association. The relationship between fleas
    10·1 answer
  • The number of moles of hydrogen that is needed to produce 0.253 mol of water is...
    10·1 answer
  • Why do real gases deviate from the ideal gas laws at low temperatures?
    9·2 answers
  • In an investigation that uses the scientific method, which step immediately follows asking a question?
    12·2 answers
  • List the following gases in order of increasing average molecular velocity at 25 degrees Celcius: H20, He, HCI, BrF, and NO2 (I'
    11·1 answer
  • Please help me i really am struggling
    8·2 answers
  • Culinary arts HELP FAST 1. Most people don't often think about science and restaurants or the food industry as
    8·1 answer
  • Select the correct answer.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!