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
Angelina_Jolie [31]
3 years ago
10

A piece of copper has a mass of 660 g. How many atoms does the sample contain?

Chemistry
1 answer:
son4ous [18]3 years ago
4 0
The conversions that will be used are:

1 mole of copper / 63.5 grams of copper
6.02 x 10²³ atoms of copper / 1 mole of copper

Multiplying the given mass by these conversions,

660 g * (1 mol Cu / 63.5 g Cu) * (6.02 x 10²³ Cu atoms / 1 mole Cu)

The sample contains 6.25 x 10²⁴ atoms of copper
You might be interested in
What are steps to solving stoichiomerty problems?
Arada [10]
<span>Balance the equation.
Convert units of a given substance to moles.
Using the mole ratio, calculate the moles of substance yielded by the reaction.
<span>Convert moles of wanted substance to desired units.</span></span>
5 0
3 years ago
Help please giving brainliest!
Alenkinab [10]
Answer:

Temperature and volume are directly related.

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure. :)
4 0
1 year ago
The combustion of ethanol ( C 2 H 6 O) produces
nika2105 [10]

Answer:

C2H6O + 3O2 —> 2CO2 + 3H2O

Explanation:

7 0
3 years ago
Read 2 more answers
During action potential, positively charged ________ ions move inside the cell.
Tems11 [23]

During action potential, positively charged  sodium ions move inside the cell.

So option D is correct one.

The sodium ion moves inside the cell during a action potential. The stage of action potential is called depolarization . This open voltage gated sodium channel.

Action potentials ( those electrical impulse that send signals around body )  is nothing but more than temporary shift ( from negative to positive ) in the neuron's membrane potential caused by ions suddenly flowing in and out of the neuron.

It consists of phases:

  • Depolarization
  • overshoot
  • repolarization

An active potential propagates along the cell membrane of an axon until  it reaches the terminal button.

to known more about action potential

brainly.com/question/27095019

#SPJ4

8 0
2 years ago
If the number is not a proper coefficient, how would you make it one?
noname [10]
I’m pretty sure you add, multiply, subtract, & divide
3 0
1 year ago
Other questions:
  • Formaldehyde, ch2o, is used as an embalming agent. draw the structure of ch2o including lone pairs.formaldehyde, ch2o, is used a
    14·1 answer
  • Why is a changing ocean temperature of only one or 2 degrees so concerning? Please help!!!! Need this before tomorrow!!!!!!
    10·2 answers
  • Initially, you have two containers with 10 mL of water at 20°C.
    11·1 answer
  • Consider this equilibrium for a buffer solution: CH3COOH + H2O CH3COO- + H3O + . When a small amount of acid is added to this sy
    6·1 answer
  • Explain how you figure out the number of neutrons in Tellurium-128.
    6·1 answer
  • What is the correct name for NC13? (a) trinitrogen chloride (b) mononitrogen chloride (c) nitrogen trichloride (d) nitride trich
    6·1 answer
  • How many oxygen atom P1O10+H2O2--&gt;4H3PO4
    10·1 answer
  • You need to make an aqueous solution of 0.150 M sodium fluoride for an experiment in lab, using a 500 mL volumetric flask. How m
    6·1 answer
  • What is the molar mass of the anhydrous compound? Answer using four significant figures.
    10·2 answers
  • Sec. 5.1: “Simple Ions”
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!