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
Kipish [7]
2 years ago
11

How many atoms are in 4.5 g of AICI3?

Chemistry
1 answer:
HACTEHA [7]2 years ago
8 0

Answer:

2.047 × 10^22 atoms.

Explanation:

To calculate the number of atoms (nA) in AlCl3, we first need to find the number of moles in the compound, AlCl3.

Molar mass of AlCl3 = 27 + 35.5(3)

= 27 + 106.5

= 133.5g/mol

Using mole = mass/molar mass

mole = 4.5/133.5

mole = 0.034moles

number of atoms in a substance (nA) = number of moles (n) × Avagadros number or constant (6.02 × 10^23 atoms)

nA of AlCl3 = 0.034 × 6.02 × 10^23

nA = 0.2047 × 10^23

nA = 2.047 × 10^22 atoms.

You might be interested in
Sodium metal is sometimes used as a cooling agent in heat exchange units because of its relatively high molar heat capacity of 2
IgorC [24]

Answer:

The specific heat of sodium is 1,23J/g°C

Explanation:

Using the atomic weight of sodium (23g/mol) and the atomic weight definition, we have that each mole of the substance has 23 grams of sodium.

starting from this, we use the atomic weight of sodium to convert the units from J / mol ° C to J / g ° C

28,2 \frac{J}{mol C} x \frac{1mol}{23g} = 1,23 J/g C

4 0
3 years ago
Which of the following elements is represented by the orbital diagram?
aalyn [17]
The answer is A I hope it was right
6 0
3 years ago
How many molecules are there in 2.30g of NH3
Vinil7 [7]

Answer:

8.13x10^22 molecules

Explanation:

We can use the Avogadro's number(6.022 x 10^23 units / mole)

2.30 g NH3 (1 mol / 17.03 g ) (6.022 x 10^23 molecules / 1 mol ) = 8.13x10^22 molecules

Hope this helps! Feel free to ask any questions!

6 0
2 years ago
Hydrogen bromide is found in volcanic gas. What is the chemical formula for<br> this compound?
ruslelena [56]

Answer:

Hydrogen bromide, anhydrous appears as a colorless gas with a pungent irritating odor. Corrosive. Heavier than air. Prolonged exposure to fire or intense heat may result in the violent rupture and rocketing of the container. Long-term exposure to low concentrations or short-term exposure to high concentrations can result in adverse health effects from inhalation. Used to make other chemicals and as a catalyst in the manufacture of chemicals. Rate of onset: Immediate Persistence: Minutes to hours Odor threshold: 2 ppm Source/use/other hazard: Chemical manufacturing industry; very corrosive.

Explanation:

HBr

3 0
2 years ago
Read 2 more answers
Which picture best shows commensalism
Luda [366]

Answer:

what picture?

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • The density of air under ordinary conditions at 25 degrees * C is 1.19g / L . How many kilograms of air are in a room that measu
    10·1 answer
  • W myFLVS
    14·1 answer
  • In the reaction Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq), how many liters of hydrogen gas will be produced from 75.0 milliliters o
    13·1 answer
  • Consider the following reaction of calcium hydride (CaH2) with molten sodium metal: CaH2(s) + 2 Na(l) -&gt; 2 NaH(s) + Ca(l) Ide
    15·1 answer
  • How much 10.0 M HNO3 must be added to 1.00 L of a buffer that is 0.0100 M acetic acid and 0.100 M sodium acetate to reduce the p
    9·1 answer
  • N2(g) + 3H2(g) =&gt; 2NH3(g) Write the reaction again as a balanced reaction
    8·1 answer
  • Two students pull a box with force of 100 N to the left and 200 N to the right.
    6·1 answer
  • According to the following reaction, how many grams of carbon tetrachloride will be formed upon the complete reaction of 27.7 gr
    5·1 answer
  • Which substance is the most common type of SOLVENT?
    7·2 answers
  • Infrared radiation emitted from the Earth's surface to the atmosphere is _____.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!