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
erastovalidia [21]
3 years ago
6

The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are

69.2% for a mass of 62.93 amu and 30.8% for a mass of 64.93amu. Calculate the average atomic mass of copper.
Chemistry
1 answer:
timofeeve [1]3 years ago
4 0

Answer:

63.546

Explanation:

The Average atomic mass is calculated using the formula:

sum of the product of the atomic masses and their relative abundances all divided by 100 or total abundance

You might be interested in
#3. How does a fever aid an immune response?
UNO [17]

Answer:

it can tell and show what pathogen is in you as well what type and mutation so then your body can fight back and remember the genetic dna so then you will be immune in some way.

Explanation:

8 0
3 years ago
Read 2 more answers
What does a positive H look like on a potential energy diagram?
Iteru [2.4K]

Answer:

D because i did this last week and got it right.

6 0
3 years ago
The reaction of hydrogen and iodine to produce hydrogen iodide has a Kc of 54.3 at 703 K. Given the initial concentrations of H2
pentagon [3]

Answer:

[HI] = 0.7126 M

Explanation:

Step 1: Data given

Kc = 54.3

Temperature = 703 K

Initial concentration of H2 and I2 = 0.453 M

Step 2: the balanced equation

H2 + I2 ⇆ 2HI

Step 3: The initial concentration

[H2] = 0.453 M

[I2] = 0.453 M

[HI] = 0 M

Step 4: The concentration at equilibrium

[H2] = 0.453 - X

[I2] = 0.453 - X

[HI] = 2X

Step 5: Calculate Kc

Kc = [Hi]² / [H2][I2]

54.3 = 4x² / (0.453 - X(0.453-X)

X = 0.3563

[H2] = 0.453 - 0.3563 = 0.0967 M

[I2] = 0.453 - 0.3563 = 0.0967 M

[HI] = 2X = 2*0.3563 = 0.7126 M

3 0
3 years ago
What is the heat of reaction (AH) of the<br> following?<br> C(s) + O2 (g) --&gt; CO2 (g)
zlopas [31]

Answer:

C co2 2co enthalpy

2 Answers. Ernest Z. The standard enthalpy of formation of carbon monoxide is -99 kJ/mol.

8 0
3 years ago
Why does sublimation feel cold?
Gala2k [10]
Cause it felt like being cold
7 0
3 years ago
Other questions:
  • A 1.00 l sample of water contains 0.0036 g of cl- ions. determine the concentration of chloride ions in ppm if the density of th
    5·1 answer
  • One source of the isotope is reprocessed nuclear reactor fuel. how many protons and neutrons does the 106ru nucleus contain?
    15·1 answer
  • Please complete sentence. The substances that make up a ____________ are not bonded together, so adding more of one substance in
    12·1 answer
  • Mutations are more important to the evolution of a species because
    6·1 answer
  • What is the number of Valence Electrons for Chlorine?
    11·1 answer
  • Which elements have the most similar chemical properties?
    11·1 answer
  • How many mole are in 2.84*10^22 molecules of h2
    9·1 answer
  • Subjective questions
    9·1 answer
  • Use the bond energies to answer the question.
    6·1 answer
  • Choose one side of the debate below, and form a brief argument supporting that side.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!