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
sladkih [1.3K]
3 years ago
14

A copper atom has a mass of 1 06 times 10^-22 g and a penny has a mass of 2.5 g. Use this information to answer the questions be

low. Be sure your answers have the correct number of significant digits. What is the mass of 1 mole of copper atoms? g How many moles of copper atoms have a mass equal to the mass of a penny?
Chemistry
1 answer:
amm18123 years ago
8 0

Answer:

Mass of 1 mole of copper is 63.83 g.

0.03916 moles of copper atoms have a mass equal to the 2.5 grams of copper penny.

Explanation:

Mass of 1 copper atom,m = 1.06\times 10^{-22} g

1 mole = 6.022\times 10^{23} atoms

Mass of 1 mole of copper :

= 6.022\times 10^{23} atoms\times 1.06\times 10^{-22} g=63.83 g

Mass of 1 mole of copper = 63.83 g

Mass of copper penny = 2.5 g

Atomic mass of copper = 63.83 g/mol

Moles of copper in 2.5 g of copper penny:

\frac{2.5 g}{63.83 g/mol}=0.03916 mol

0.03916 moles of copper atoms have a mass equal to the 2.5 grams of copper penny.

You might be interested in
"What volume of" a 0.300 M BaF2 "solution is needed to prepare" 240.0 mL of a 0.100 M F- solution
zhannawk [14.2K]
Use M x V = M' x V'

0.300 x V = 0.100 x 250

V = .......... ml
6 0
3 years ago
Which organelle is the control center of the cell?
Ivenika [448]

Answer:

nucleus

Explanation:

6 0
3 years ago
How can chemical weathering contribute to physical weathering?
lora16 [44]

A-leads to the abrasion of rocks and minerals

A-dense vegetation cover

True

Explanation:

Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.

Agent of weathering are wind, water and glacier.

Chemical weathering contributes to physical weathering in that it leads to the abrasion of rocks and minerals.

During chemical weathering, a rock chemically combines with materials in the environment and weakens it.

When physical weathering processes are induced, grains produced independently weakening of bonds in rocks grind against one another and wears each other off.

An area with a dense vegetation cover undergoes rapid chemical weathering:

  • Plant roots penetrates deep into the rock and increases the surface area of chemical action.
  • Plants produce chemicals that combines with rocks and causes them to decay.
  • Since the area is always moist, chemical action becomes more severe.

Buildings and statues made of stone are subjected to the same degree of weathering as rocks exposed naturally.

This is true.

Statues and buildings weather just like rocks we find in nature.

It is the same sunshine and rain that impacts rocks that also impacts buildings and statues.

So they degrade at the same rate except they are protected.

learn more:

Erosion brainly.com/question/2473244

#learnwithBrainly

5 0
3 years ago
Structural Formulas for Covalent Molecules
rosijanka [135]

Answer:

  1. CFJA17
  2. THZ561
  3. GJA561
  4. GH68
  5. N461
  6. DG56
  7. BSJ57

HOPE IT HELPS THANK ME LATER.

6 0
3 years ago
Can light move through space even though there are no molecules?
amid [387]

Answer:

This means that waves need a medium to propagate, but light waves propagate where no particles are present. ...

7 0
3 years ago
Other questions:
  • For each set of values, calculate the missing variable using the ideal gas law.
    11·1 answer
  • Sodium thiosulfate, Na 2S 2O 3, is used as a "fixer" in black and white photography. Identify the reducing agent in the reaction
    7·1 answer
  • Explain how a bond forms between sodium and chlorine in sodium chloride (NaCl).
    8·1 answer
  • during a rising tide, ocean waves often become larger. if the amplitude of a wave increases by a factor of 1.1, by how much does
    8·1 answer
  • Calculate the mass of 5mole of sodium​
    8·1 answer
  • Here is the balanced chemical equation for the combustion of isopropyl alcohol: 2C3H7OH(l) + 9O2(g) → 6CO2(g) + 8H2O(g) Multiply
    15·2 answers
  • Explain why the sun will not explode at any point in its life cycle
    11·2 answers
  • This gas law takes into consideration temperature and pressure
    10·2 answers
  • How do I find lattice energy with the overall heat of dissolution of aluminum sulfate?
    13·1 answer
  • Cuantos gramos de nitrato de potasio (KNO3) son necesarias para preparar 800ml de solucion al 12 % m/v
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!