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
Fantom [35]
2 years ago
5

Naturally occurring Indium has two isotopes.

Chemistry
1 answer:
trasher [3.6K]2 years ago
3 0

Answer:

Average Molar mass is 114.8u

Explanation:

» From the formula of average Relative Atomic Mass [ RAM ]

{ \rm{RAM =  \sum \frac{(isotopic \: mass \times \%abundance)}{100} }} \\

» We have two isotopes of Indium,

  • Indium-113, mass » 112.9u, % » 4.28%
  • Indium-115, mass » 114.9u, % » 95.72%

{ \tt{RAM =  \frac{ \blue{(112.9 \times 4.28)} + { \green{(114.9 \times 95.72)}}}{100} }} \\  \\ { \tt{RAM =  \frac{11481.44}{100} }} \\  \\ { \underline{ \underline{ \tt{ \: RAM = 114.8\: }}}}

You might be interested in
Pls help the answers and questions r in the pic
soldier1979 [14.2K]
It would be 9*10 to the -3
6 0
3 years ago
Read 2 more answers
b) If 1.5 mole of oxygen reacted, how many mole of iron (III) oxide would be formed from the reaction?
lyudmila [28]

Answer:

If there reacted 1.5 moles of O2, there will be produced 1.0 mol of Fe2O3

Explanation:

Step 1: Data given

Number of moles oxygen reacted = 1.5 moles

Step 2: The balanced equation

4Fe + 3O2 → 2Fe2O3

Step 3: Calculate moles of Fe2O3

For 4 moles Fe consumed, we need 3 moles of O2 to produce 2 moles of Fe2O3

For 1.5 moles O2 consumed, we'll have 2/3 * 1.5 = 1.0 mol of Fe2O3

If there reacted 1.5 moles of O2, there will be produced 1.0 mol of Fe2O3

7 0
3 years ago
How many particles are present in this diagram?
AVprozaik [17]
There are 9 particles
5 0
2 years ago
Read 2 more answers
Which phrase describes a compound that consist of two elements
Lunna [17]

Answer:

there are no phrases

Explanation:

7 0
3 years ago
How many moles are in 325 mL Ne at STP?
Slav-nsk [51]

Hey there!

325 mL in liters:

325 / 1000 => 0.325 L

1 mole ( Ne ) ------------- 22.4 L ( at STP )

moles ( Ne ) ------------ 0.325 L

moles Ne = 0.325 * 1 / 22.4

moles Ne = 0.325 / 22.4

moles Ne = 0.0145 moles

hope this helps!

6 0
3 years ago
Other questions:
  • Benzene is an organic chemical compound with the molecular formula C6H6. In the benzene molecule, carbon atoms form a ring with
    13·1 answer
  • Which of the following is an element? A. CO2 B. H2O C. Xy D. Na
    12·1 answer
  • What allows nutrients to enter Plants and animals are able to be transported
    11·1 answer
  • Look at the atom models you made in today’s activities. Name the three parts of the atom. A. protons, neutrons, and electrons B.
    10·1 answer
  • How many liters of oxygen gas can be produced if 28.7 grams of water decomposes at 294 Kelvin and 0.986 atmospheres? Show all of
    11·1 answer
  • Marie Curie named polonium in honor of Poland. 1. True or 2. False
    14·1 answer
  • 3. How many atoms in 3.91 moles of sodium?
    7·1 answer
  • I need help with this because it's easy for you guys but I don't understand it
    10·1 answer
  • How many moles of oxygen gas are necessary to completely react with 10.6 moles of propane? C3H8(g) + 5 O2(g) --> 3 CO2 (g) +
    12·1 answer
  • What is a characteristic of a fossil fuel? They do not cause pollution. They are formed quickly. They are renewable. They are fo
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!