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
Ivan
2 years ago
7

How many atoms are in 3.23 grams of copper

Chemistry
1 answer:
Nata [24]2 years ago
5 0

the answer is  6.022×1023 atoms

You might be interested in
When a chemical reaction is run in aqueous solution inside a calorimeter, the temperature change of the water (and Ccal) can be
Yakvenalex [24]

Answer:

The total change in enthalpy for the reaction is - 81533.6 J/mol

Explanation:

Given the data in the question;

Reaction;

HCl + NaOH → NaCl + H₂O

Where initial temperature is 21.2 °C and final temperature is 28.0 °C. Ccal is 1234.28 J

Moles of NaOH  = 50.mL × 1.00 M = 50.0 mmol = 0.0500 mol

Moles of HCl = 50.mL × 1.00 M = 50.0 mmol = 0.0500 mol

so, 0.0500 moles of H₂O produced

Volume of solution = 50.mL  +  50.mL  = 100.0 mL

Mass of solution m = volume × density = 100.0mL × 1.0 g/mL = 100 g

now ,

Heat energy of Solution q= (mass × specific heat capacity × temp Δ) + Cal

we know that; The specific heat of water(H₂O) is 4.18 J/g°C.

so we substitute

q_soln = (100g × 4.18 × ( 28.0 °C - 21.2 °C) ) + 1234.28

q_soln = 2842.4 + 1234.28

q_soln = 4076.68 J

Enthalpy change for the neutralization is ΔH_{neutralization}

ΔH_{neutralization} = -q_soln / mole of water produced

so we substitute

ΔH_{neutralization} = -( 4076.68 J ) / 0.0500 mol  

ΔH_{neutralization} = - 81533.6 J/mol

Therefore, the total change in enthalpy for the reaction is - 81533.6 J/mol

6 0
2 years ago
Consider the equation: 2NO(0) - N.04(). Using ONLY the information given by the equation which of the following
ratelena [41]

Answer:

By increasing the pressure, the molar concentration of  N2O4 will increase

Explanation:

We have the equation 2NO2 ⇔ N2O4

This equation is reversible and exotherm. By <u>decreasing the temperature</u>, the reaction will produce more energy, so the reaction will move to the right.  But a lower temperature also lowers the rate of the process, so, the temperature is set at a compromise value that allows N2O4 to be made at a reasonable rate with an equilibrium concentration that is not too unfavorable

So <u>increasing the temperature</u> will shift the equilibrium to the left. The equilibrium shifts in the direction that consumes energy.

If we d<u>ecrease the concentration of NO2</u>, the equilibrium will shift to the left, resulting in forming more reactants.

To increase the molar concentration of the product N2O4, we have to <u>increase the pressure</u> of the system.

NO2 takes up more space than N2O4, so increasing the pressure would allow the reactant to collide more form more product.

By increasing the pressure, the molar concentration of  N2O4 will increase

7 0
3 years ago
Read 2 more answers
Why is it important to offer evidence to support statements about experiments?
dexar [7]
So you have evidence that the experiment is true or correct.
8 0
3 years ago
Can u answer all of em
TiliK225 [7]

Answer:

one is across

Explanation:

8 0
2 years ago
For every action, there is an equal and opposite reaction.
Svetradugi [14.3K]

Answer:

yeah its newton's third law

Explanation:

7 0
2 years ago
Other questions:
  • Study the picture of iron. How many connections, or bonds, does the center atom have to the other atoms?
    7·2 answers
  • How a convection current can enable a hawk or eagle to soar upward without flapping its wing 
    14·2 answers
  • The ratio of the lengths of two sides of a right triangle forms a
    15·1 answer
  • Compounds formed when non-metals react with metals consist of particles called ionic compound
    12·1 answer
  • Enter your answer in the provided box. To make use of an ionic hydrate for storing solar energy, you place 409.0 kg of sodium su
    9·1 answer
  • If the calcium oxide were to be obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 1
    7·1 answer
  • If 16.4 grams of calcium nitrate is heated as shown in the reaction:
    15·1 answer
  • Help help help help help help​
    9·2 answers
  • Answer please i need it
    13·1 answer
  • 4. Using stoichiometry, how many grams of sodium chloride should be produced from the reaction
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!