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
shutvik [7]
3 years ago
9

A 13.97 g sample of nabr contains 22.34% na by mass. Considering the law of constant composition (definite proportions) how many

grams of sodium does a 5.75 g sample of sodium bromide contain?
Chemistry
1 answer:
Grace [21]3 years ago
3 0

As per the law of constant composition, a given sample will always contain the same number of elements that combine in the same mass proportion.

Therefore if a sample of 13.97 g of NaBr contains 22.39 % of Na by mass then,  a sample of 5.75 g of NaBr would also contain 22.39% Na by mass

Hence:

Mass of Na = 5.75 g * 22.39/100 = 1.287 g

5.75 g of NaBr would contain 1.29 g of Na

You might be interested in
The equation for molarity, M , is
Airida [17]

A solution with a molarity of 7.65 mol/L and a volume of solution of 0.690 L, contains 5.28 moles of solute.

<h3>What is molarity?</h3>

Molarity is the number of moles of solute per liter of solution.

A solution has a molarity (M) of 7.65 mol/L and a volume (V) of 0.690 L. We can calculate the number of moles of solute (n) using the following expression.

M = n / V

n = M × V = 7.65 mol/L × 0.690 L = 5.28 mol

A solution with a molarity of 7.65 mol/L and a volume of solution of 0.690 L, contains 5.28 moles of solute.

Learn more about molarity here: brainly.com/question/26873446

#SPJ1

7 0
1 year ago
What is the name of the polyatomic in MgSO4?
blsea [12.9K]

Answer:

Magnesium Sulfate

Explanation:

4 0
3 years ago
Read 2 more answers
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. when 18.0 g of carbon were burned in the presence of
zavuch27 [327]
C + O2 --> CO2

18g C = 18/12.01 = 1.49 moles (Limiting Reagent) 
62.3-14.3 = 48g oxygen that reacted 
48g O = 3 moles 
7 0
3 years ago
What is the reason behind that the melting and boiling point of iron is more than that of sodium? Write any two differences betw
liraira [26]

Answer:

difference between metal and alloy is that the metal is a pure substance whereas the alloy is a mixture of two or more components.

Explanation:

Mostly the metalloids have the appearance just like the metallic appearance And also they are the brittle one's . Boron and silicon are the example. Note; By combining with other metals metalloid can form the alloy

5 0
2 years ago
Which of the following is the correct chemical formula for cs and br? csbr cs2br csbr2
nalin [4]
The correct chemical formulae is CsBr
4 0
3 years ago
Read 2 more answers
Other questions:
  • sample of saline contains 45 ml of saline in 128 ml of water. What is the percent by volume of the solution?
    8·1 answer
  • Fe(OH)3 → Fe2O3 + H2O<br><br>y'all help tbh please ​
    9·1 answer
  • Which of the following is an example of energy causing motion?
    13·2 answers
  • How many total electrons and valence electrons are in the following? (two answers for each compound)
    9·1 answer
  • If carbon can count the shared hydrogen
    7·1 answer
  • How the glass is made up off?
    13·1 answer
  • Name 2 diatomic molecules.
    10·1 answer
  • 14 steps decay series
    7·1 answer
  • True or false: an amplifier can adjust the amplitude
    14·1 answer
  • What does an ion have that an atom does not?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!