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
PSYCHO15rus [73]
3 years ago
14

Saltpeter is a compound made of potassium(K), nitrogen(N), and oxygen(O). Every 100.0g of saltpeter contains 38.67g potassium an

d 13.86g nitrogen. What is the mass of oxygen contained in 285.0mg of saltpeter? Answer needs to be in grams
Chemistry
1 answer:
Oksanka [162]3 years ago
7 0
Use a proportion ... 
<span>100.0g - 38.67g - 13.86g = 47.47g Oxygen </span>
<span>285.0 mg = 0.285g </span>
<span>47.47/100 = x/0.285g </span>
<span>x = ( 47.47/100) X 0.285g </span>
You might be interested in
What happens to molecules when a substance is cooled?​
marissa [1.9K]

Answer:

causes a substance to change from a liquid to a solid.

Explanation:

3 0
3 years ago
Read 2 more answers
If the distance between two objects of the same mass decreased the force of gravity between them would
Anni [7]

Answer:

The force of gravity between two objects will decrease as the distance between them increases.

Explanation:

4 0
3 years ago
Read 2 more answers
3. What role did the government play in either supporting or suppressing African Americans'/Blacks'
9966 [12]
Slavery played a big role in this. the confederacy allowed slavery while the union was oppose to it.
4 0
3 years ago
Select the correct statement.
jok3333 [9.3K]
D) basic ions contain some H+ ions
7 0
2 years ago
Using words, explain all steps of dimensional analysis when converting 6.7 hectometers to meters. You must explain the set up of
sleet_krkn [62]

Answer:

  • See below

Explanation:

In order to convert 6.7 hectometers to meters using dimensional analysis, you must use the ratio of hectometers to meters.

There are 100 meters in one hectometer, then you start setting the equality: 100 m = 1 hm.

Dividing both sides by 1 hm you get the fraction form of the ratio, with meters (m) in the numerator and hectometers (hm) in the denominator.

              1m/100hm

Since hm is in the numerator, when you multiply 6.7 hm by the unit ratio the hm will be canceled and the result will have only m:

            6.7hm\times 1m/100hm=0.067m

6 0
3 years ago
Other questions:
  • The law of mass action suggests that _____.
    10·1 answer
  • Question 1 (1 point)
    11·1 answer
  • Topsoil is considered to be most fertile when it has a
    7·2 answers
  • Which is a way to Express concentration of solution.?​
    9·2 answers
  • A bag of fertilizer is labeled 10-20-20. What is the actual percentage of phosphorus in the fertilizer?
    10·1 answer
  • What is the most important clue that a chemical reaction is taking place?
    15·1 answer
  • Why does Watney get left behind on Mars?
    13·2 answers
  • Ammonium phosphate is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric acid with
    12·1 answer
  • Can you use carbon dioxide in the dark
    15·1 answer
  • Find the density of a piece of chocolate with these measurements: 2.4 g and 5.12 mL
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!