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
gtnhenbr [62]
3 years ago
10

3. What is the molar mass of O2? Round to nearest whole number. 8 O 16 32 64

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
5 0

Answer:

Molar mass of O is = 16

Molar mass of O2 = 32

You might be interested in
How many atoms of oxygen are in a molecule of glucose (C6H12O6)?
ICE Princess25 [194]

Answer:

There are 6 oxygen atoms.

Explanation:

Glucose has a chemical formula of: C6H12O6 That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms.

hope this helps

8 0
2 years ago
Cereal is an example of what type of matter?
Elena L [17]
A heterogeneous mixture since you can separate the ingredients that make it up.
5 0
3 years ago
Read 2 more answers
How many joules are needed to melt 50 g of ice at 0°C?
Alexeev081 [22]

Answer:

You need the Delta H fusion for water. Multiply that by 50 grams. Then multiply 50 g x 4.184 x 65 to get joules to raise water to 65 degrees. Add these values together to get total joules.

Explanation:

6 0
3 years ago
Balance the following: <br><br> C₂ + B → B₂C₂<br><br> Ag₄ + SO₂ → AgO + S₂
jarptica [38.1K]

Answer:

The balanced reactions are:

C₂ + 2B → B₂C₂

Ag₄ + 2SO₂ → 4AgO + S₂

Explanation:

The Law of Conservation of Matter postulates that "the mass is not created or destroyed, only transformed." This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. In other words, then the mass before the chemical reaction is equal to the mass after the reaction.

In other words, the law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts .

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.  

You have:

<em>C₂ + B → B₂C₂</em>

Left side: 2 C and 1 B.

Right side: 2 C and 2 B.

Carbon C is balanced since you have the same amount of the element on each side of the reaction, but boron B is not balanced. So, balancing the reaction:

<u><em>C₂ + 2B → B₂C₂</em></u>

Left side: 2 C and 2 B.

Right side: 2 C and 2 B.

Now you have the same amount of each element on each side of the reaction, so the reaction is balanced.

Now you have:

<em>Ag₄ + SO₂ → AgO + S₂</em>

Left side: 4 Ag, 1 S and 2 O.

Right side: 1 Ag, 2 S and 1 O.

Balancing the Ag:

<em>Ag₄ + SO₂ → 4AgO + S₂</em>

Left side: 4 Ag, 1 S and 2 O.

Right side: 4 Ag, 2 S and 4 O.

Balancing the O:

<u><em>Ag₄ + 2SO₂ → 4AgO + S₂</em></u>

Left side: 4 Ag, 2 S and 4 O.

Right side: 4 Ag, 2 S and 4 O.

You have the same amount of each element on each side of the reaction, so the reaction is balanced.

<em />

<em />

3 0
3 years ago
The table above lists the wavelength range, frequency range, possible uses, and hazards of the seven types of electromagnetic
arsen [322]

X-ray

Explanation:

X-rays are used medically by doctors to image the interior of the human body but can cause cell damage.

X-rays are energetic radiations that are classified as ionizing radiations.

They penetrate the skin and body tissues.

  • X-rays were discovered by  Wilhelm Conrad Röentgen In Germany in the year 1895.
  • The rays have a wide range of application today.
  • They are used in x-ray therapy to fight cancerous cells in the body.

Learn more:

X-ray brainly.com/question/6507143

#learnwithBrainly

4 0
2 years ago
Other questions:
  • Covalent compounds occur------
    11·1 answer
  • When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 10.085 g at 20ºC. If the d
    11·1 answer
  • An atom of fluorine has an atomic number of 9 and an atomic mass of 19. The atom contains
    15·1 answer
  • Which two practices are examples of how people use science?
    13·2 answers
  • Which statement best describes the oxidation numbers of the atoms found in magnesium chloride
    15·1 answer
  • In the following balanced reaction, what volume of a 3.0 M H2SO4 is required to completely neutralize 200.0 ml of a 2.5 M NaOH?
    11·2 answers
  • How would these cells appear under a microscope at a higher magnification.
    15·1 answer
  • As you move down a group, you will recall that the radius increases. Why do you think an increase in atomic radius would result
    7·1 answer
  • What is the point within the earth where seismic waves originated brainly
    14·1 answer
  • The mass number for an atom is numerically equal to which quantity
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!