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
babunello [35]
2 years ago
11

Copper has average atomic mass of 63.546 amu. It's two isotopes are Cu-63 (which is 69.17% abundant and has a mass of 62.9296 am

u) and Cu-65. From this information, calculate the mass of Cu-65.
Chemistry
1 answer:
garri49 [273]2 years ago
6 0

Answer: 69.152% → 63^Cu

30.848% → 65^Cu

Explanation:

As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.

Simply put, an element's naturally occurring isotopes will contribute to the average atomic mass of the element proportionally to their abundance.

Explanation:

You might be interested in
What is the concentration of hydronium ions and hydroxide ions
nikdorinn [45]
To find the concentration of hydronium ions, take 10 raised to the negative pH:
10^-9.56= 2.75 x10^-10M

To find the concentration of hydroxide ions, take 10 raised to the negative pOH: 10^-4.44 = 3.63 x10^-5M
6 0
3 years ago
Predict the following chemical formula for a compound between aluminum and chlorine. AlCl3 Al3Cl Al2Cl3 Al3Cl2
Tasya [4]
Both aluminum and chlorine have known charges, which are +3 and -1 respectively. To make them cancel each other out in charge, you would need 3 chlorine and for one aluminum, therefore AlCl_{3} would be correct
7 0
2 years ago
1. Compare and contrast the characteristics of metals and nonmetals.
Alona [7]

Answer:

1.Metals

These are very hard except sodium

These are malleable and ductile  pieces

These are shiny

Electropositive in nature

Non-metals

These are soft except diamond

These are brittle and can break down into pieces

These are non-lustrous except iodine

Electronegative in nature

2. The electrochemical series helps to pick out substances that are good oxidizing agents and those which are good reducing agents.In an electrochemical series the species which are placed above hydrogen are more difficult to be reduced and their standard reduction potential values are negative.

3. Arrhenius theory, theory, introduced in 1887 by the Swedish scientist Svante Arrhenius, that acids are substances that dissociate in water to yield electrically charged atoms or molecules, called ions, one of which is a hydrogen ion (H+), and that bases ionize in water to yield hydroxide ions (OH−).

4. The common application of indicators is the detection of end points of titrations. The colour of an indicator alters when the acidity or the oxidizing strength of the solution, or the concentration of a certain chemical species, reaches a critical range of values.

4 0
3 years ago
Read 2 more answers
How is the nucleus of an atom split?
AnnZ [28]
Collision with a high-speed particle
8 0
3 years ago
Draw an energy diagram for an endothermic and exothermic reaction and label the diagram ​
just olya [345]
Energy diagram for and endothermic and exothermic reaction

5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for ‘x’: 12(x-7)+3(2x+2)=50x-2
    13·1 answer
  • Choose the element described by the following electron configuration.
    11·2 answers
  • Which chemical symbol describes an element?<br> o H2O<br> o 02<br> o CH4<br> o H2 SO4
    14·2 answers
  • What is the difference between a crystalline material and an amorphous material? Give an example of each type.
    7·1 answer
  • Use the periodic to write the electron configuration for rubidium (Rb) in noble-gas notation. . Rb: [Kr]s
    12·2 answers
  • How much energy is required to vaporize 1.5 kg of copper? (Refer to table of
    6·1 answer
  • The process of breaking down Glucose and using the energy stored in that molecule for cellular function is known as_____.
    7·1 answer
  • Help me with chemmm!!!
    6·1 answer
  • If 0.400 moles CO and 0.400 moles O2 completely react how many grams of CO2 are produces?
    5·1 answer
  • What is the molarity if 16. 0 grams of NaOH is dissolved in 855 mL of solution?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!