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
Ksju [112]
3 years ago
14

How many atoms are in 4.90 mol of Al2O3

Chemistry
1 answer:
Finger [1]3 years ago
4 0

Answer:

12 g of 12C to three significant figures maybe?

Explanation:

tell if correct or not im sorry fi it isnt :c

You might be interested in
50 POINTS
Marina86 [1]

Answer:

A mixture whose components are soluble in each other. ... a solution that has water as its solvent; most have an ionic substance as the solute, may contain a liquid ... The suspensions of particles larger than individual ions or molecules, but the ... This effect is used to determine whether a mixture is a true solution or a colloid.

process of solute particles being surrounded by water molecules arranged in a ... solution. homogeneous mixture consisting of a solute dissolved into a solvent. ... apart from the crystal, the individual ions are then surrounded by solvent particles in a ... are intermediate in size between those of a solution and a suspension.

A suspension is a heterogeneous mixture in which some of the particles ... The particles in a suspension are far larger than those of a solution, so gravity is … ... Particle size: 0.01-1nm; atoms, ions or molecules, Particle size: ... solutions because the individual dispersed particles of a colloid cannot be seen.

Explanation:

8 0
3 years ago
Which type of rock is most likely to form because of high heat and pressure?
aleksandrvk [35]

Answer:

metamorphic rocks form because of heat/pressure

Explanation:

I looked it up

7 0
3 years ago
Read 2 more answers
A sample of helium gas occupies 355ml at 23°c. if the container the he is in is expanded to 1.50 l at constant pressure, what is
ss7ja [257]

Answer: The final temperature would be 1250.7 K.

Explanation: We are given a sample of helium gas, the initial conditions are:

V_{initial}=355mL=0.355L  (Conversion factor: 1L = 1000 mL)

T_{initial}=23\°C=296K (Conversion Factor: 1° C = 273 K)

The same gas is expanded at constant pressure, so the final conditions are:

V_{initial}=1.50L

T_{initial}=?K

To calculate the final temperature, we use Charles law, which states that the volume of the gas is directly proportional to the temperature at constant pressure.

V\propto T

\frac{V_{initial}}{T_{initial}}=\frac{V_{final}}{T_{final}}

Putting the values, in above equation, we get:

\frac{0.355L}{296K}=\frac{1.50L}{T_{final}}

T_f=1250.7K

5 0
3 years ago
Read 2 more answers
A car travelling at 50m/s produces a force of 200N. What is the power of the engine in kilowatts(KW).
Zina [86]

Answer:

10 kilowatts or 10,000 kw

Explanation:

Power = Force × Velocity

Given that:

Velocity of car is 50 m/s

The force is 200N

The power would be:

P = 200 × 50

P = 10,000 W

Notice that it only reaches watts because of the unit of the velocity is m/s. Standard unit to make Kw is km.

Since:

1 kw = 1000 w

10 kw = 10000 w

Credits to the person below me for correction.

6 0
3 years ago
Read 2 more answers
What is the mass number of a carbon isotope with 10 neutrons
Korvikt [17]

Answer:

16 because carbon atom having usual 6 neutron have a mass number of 12 and that with 7 neutron has mass number of 13

4 0
3 years ago
Read 2 more answers
Other questions:
  • A chemistry student is given 1.00 L of a clear aqueous solution at 18.0 °C. He is told an unknown amount of a certain compound
    12·1 answer
  • Calculate the amount of heat energy required to convert 55.0 g of water at 62.5°C to steam at 124.0°C. (Cwater = 4.18 J/g°C; Cst
    15·1 answer
  • Use each equation to predict whether the relative entropy change is S(products) > S(reactants) or S(products) < S(reactant
    15·1 answer
  • 4. How many atoms of copper are in 4,5 moles of copper (II) chloride?
    11·1 answer
  • A major chemical spill occurred five years ago at Baker’s Beach, the world’s sole nesting ground for Merrick sea turtles, and pr
    9·1 answer
  • P4+O2=P2O3<br> What’s the balance of this equation?
    15·1 answer
  • 3. Which best describes the definition for the atomic mass of an element?
    13·1 answer
  • If density is calculated by mass divided by volume and the mass increases, what would happen to the density of an object?
    9·1 answer
  • What is the charge of all elements in the alkaline earth metal group?
    5·1 answer
  • What is the number of atoms of oxygen in 0.1 mol of CuSO4.5H2O? &amp; explain​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!