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
mel-nik [20]
3 years ago
10

Given the chemical formula, KNO3, what is the percent nitrogen in the compound?

Chemistry
1 answer:
VikaD [51]3 years ago
3 0

Answer:

The answer to your question is letter A

Explanation:

Process

1.- Calculate the molar mass of KNO₃

KNO₃    molecular mass = 39.1 + 14.01 + (3 x 16)

                                        = 39.1 + 14.01 + 48

                                        = 101.11 g

2.- Use a rule of three to find the percent of nitrogen

                            101.11 g of KNO₃  ---------------   100%

                             14.01 g of N        ---------------     x

                             x = (14.01 x 100) / 101.11

                             x = 13.86%

You might be interested in
Which of the following is an example of a chemical change?
wolverine [178]

Answer:

C

Explanation:

6 0
3 years ago
Read 2 more answers
A decomposition reaction, with a rate that is observed to slow down as the reaction proceeds, has a half-life that does not depe
mr_godi [17]

Answer: A plot of the natural log of the concentration of the reactant as a function of time is linear.

Explanation:

Since it was explicitly stated in the question that the half life is independent of the initial concentration of the reactant then the third option must necessarily be false. Also, the plot of the natural logarithm of the concentration of reactant against time for a first order reaction is linear. In a first order reaction, the half life is independent of the initial concentration of the reactant. Hence the answer.

3 0
3 years ago
If a mixture looks smooth and the same throughout it is probably what
gulaghasi [49]
Answer:
             <span>If a mixture looks smooth and the same throughout it is probably <u>Homogeneous</u>.

Explanation:
                   Mixture is the combination of different compounds which are unreactive to each other.

Mixture are classified as ...

Solutions; in which the mixed compounds are thoroughly mixed and cannot be distinguished from each other and are said to be homogeneous. In solutions the size of solute is very small (i.e. Less than 1 nm).

Colloids; in which the solute is homogeneous visually but heterogeneous microscopically. The size of particles in this case is between 1 nm to 1 </span>μm.

Suspensions; in which the mixture is heterogeneous, the particle size is greater than 1 μm and settles down (precipitation) under the influence of gravity.
4 0
3 years ago
How many atoms of S are there?
jonny [76]
Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1 . Because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.
4 0
3 years ago
Read 2 more answers
Gravitational forces exerted on any two____in the universe
OleMash [197]

Answer:-

Gravitational forces exerted on any two <em><u>bodies</u></em> in the universe

Hope it helps you...

✅

6 0
2 years ago
Other questions:
  • From left to right, the three regions of a phase diagram represent the _____ of a substance.
    6·2 answers
  • How many moles of aluminum oxide are formed from 10.3 moles of Aluminum?
    11·1 answer
  • A jeweler has five rings, each weighing g, made of an alloy of silver and gold. She decides to melt down the rings and add enoug
    10·1 answer
  • 8. Classify each of the following changes as physical or chemical: (a) coal burning (b) ice melting (c) mixing chocolate syrup w
    14·1 answer
  • I need help on number 3. Thanks
    9·2 answers
  • Create a Element #Brainliest Challenge
    9·1 answer
  • What is the weight in grams of 1 mole of ammonium sulfate (NH4)2SO4
    5·1 answer
  • Helppp nowwww plsss!!!
    15·1 answer
  • What is the formal charge in SeCl4?​
    12·1 answer
  • Ryan just joined the track team. He runs the 40 yard dash in 6.4 seconds. Explain three human body systems that work together to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!