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
Anvisha [2.4K]
3 years ago
7

An analysis of a 4.2-gram sample of a compound is found to contain 54.76 percent sodium (Na) and 45.24 percent fluorine (F).  De

termine the empirical formula of the compound
Chemistry
2 answers:
Natali [406]3 years ago
7 0

Answer:

NaF

Explanation:

If the 54.76% of the sample is sodium and 45.24% is fluorine. Mass of each atom is:

Na: 4.2g × 0.5476 = <em>2.3g</em>

F: 4.2g × 0.4524 = <em>1.9g</em>

In moles:

Na: 2.3g × (1mol / 22.99g) = <em>0.1 moles</em>

F: 1.9g × (1mol / 19) = <em>0.1 moles</em>

As empirical formula is defined as the simplest whole-number ratio of atoms in a compound, the ratio of Na:F is:

0.1 / 0.1 = 1. Thus, empirical formula is:

<em>NaF</em>

<em></em>

Dvinal [7]3 years ago
6 0
The answer to this question is:

An analysis of a 4.2-gram sample of a compound is found to contain 54.76 percent sodium (Na) and 45.24 percent fluorine (F).  Determine the empirical formula of the compound?.
<span>"NaF"
</span>
Hoped This Helped, <span> Hgibore
Your Welcome :) </span>
You might be interested in
Problem 1. (Temperature and thermal equilibrium) Temperature is an indicator of: a. Total energy of the molecules in the system
horrorfan [7]

Answer:

The average kinetic energy of the molecules in the system

Explanation:

According to the kinetic theory of matter, the particles of a system are in constant motion and collide steadily with one another as well as with the walls of the container.

The average kinetic energy of these molecules in motion is referred to as the temperature of the body. Hence, temperature is a measure of the average kinetic energy of the molecules of a body.

6 0
3 years ago
CAN SOMEONE HELP ME HERE PLEASE I ONLY NEED THESE LEFT AND IM CONFUSED-
liubo4ka [24]

Answer:

Pick UpTruck

Explanation:

Because the pick uptruck is bigger and on the oppiste side of the rode

7 0
3 years ago
When burned, coal releases _____. oxygen carbon dioxide methane sulfur nitrogen oxide?
Rus_ich [418]
Coal releases carbon dioxide when burned. The reaction looks like this:
C(s)+O₂(g)→CO₂(g) 

I hope this helps.  Let me know in the comments if anything is unclear.
6 0
4 years ago
6.0 L of gas in a piston at a pressure of 1.0 atm are compressed until the volume
alex41 [277]

Answer:

1.71atm

Explanation:

The following were obtained from the question:

V1 (initial volume) = 6L

P1 (initial pressure) = 1atm

V2 (final volume) = 3.5L

P2 (final pressure) =?

Using the Boyle's law equation:

P1V1 = P2V2, the final pressure can be obtained as follow:

P1V1 = P2V2

1 x 6 = P2 x 3.5

Divide both side by 3.5

P2 = 6/3.5

P2 = 1.71atm

The final i.e the new pressure inside the piston is 1.71atm

6 0
3 years ago
A student is trying to distinguish elements from compounds. If a substance is an element, what else must be true about it?
Aleks04 [339]

Answer: A. It can be found on the periodic table. E. It is made of only one type of atom.

Explanation: Element is the pure substance which is made up of similar atoms and cannot be separated into its components. Example : Al

Compound is the pure substance which is made up by combination of two or more elements in a fixed ratio by mass. Example : Al_2O_3

A) Every element can be found on the periodic table.

B) Element can be a solid, liquid or a gas.

C) Elements can be separated into different components as it is made up of only single type of atoms.

D) Only solids have fixed shape and volume.

E) Elements are made up of only one type of atoms.


4 0
3 years ago
Other questions:
  • Is Sr3(PO4)2 ionic or covalent
    11·1 answer
  • Convert 5.8 km to the unit mm. <br> 0.0000058 mm <br> 0.0058 mm <br> 5,800 mm <br> 5,800,000 mm
    8·1 answer
  • Josh is doing an experiment with water. He starts with a plastic cup of water that has a mass of 12 grams. He places the cup in
    6·2 answers
  • Why isn't a different base broth required for each decarboxylase test?
    15·1 answer
  • What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and a mass number of 39
    15·1 answer
  • What unit is mass generally measured in
    14·2 answers
  • The barometric pressure measured outside an airplane at 3 km ( ft) was 524 mmHg. Calculate the pressure in kPa.
    6·1 answer
  • The reaction 2NoBr(g) ---&gt; 2NO(g)+Br2(g) is a second order reaction with a rate constant of 0.80M^-1 s^-1 at 11 C. If the ini
    13·1 answer
  • Which tool is used to measure an object’s mass?
    13·1 answer
  • Calculate the maximum concentration (in M) of calcium ions (Ca2+) in a solution that
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!