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
FrozenT [24]
3 years ago
14

If you stacked Avogadro's number of pennies one on top of the other on Earth's surface, how far would the stack extend (in kilom

eters)?
Chemistry
1 answer:
Mashutka [201]3 years ago
5 0

A penny is described as a coin having thickness of about 0.019 m as follows:

Thickness of a penny = 0.019 m

Number of pennies stacked is equivalent to Avogadro number = 6.02 * 10^23 penny

Distance convered by number of pennies = 6.02 * 10^23 * 0.019 = 1.14 * 10^19 Km

Thus the stack of pennies extended upto 1.14 * 10^19 Km

You might be interested in
Can someone help me with this please :)
antoniya [11.8K]

Answer: Hydrochloric acid poses a various health risk

5 0
3 years ago
how many moles of sodium are needed to react with sulfuric acid to produce 3.75 moles of sodium sulfate according to the followi
anastassius [24]
Hello!
<span>
You'll need to react 7,5 moles of Sodium with sulfuric acid to produce 3.75 moles of sodium sulfate
</span>
First of all, you need to balance the reaction. The balanced reaction is shown below (ensuring that the Law of Conservation of Mass is met on both sides):

2Na + H₂SO₄ → Na₂SO₄ + H₂

Now, all that you have to do is to use molar equivalences in this reaction applying the coefficients to calculate the moles of Sodium that you'll need:

molesNa=3,75moles Na_{2} SO_4* \frac{2 moles Na}{1 mol Na_{2} SO_4} =7,5 moles Na 

Have a nice day!
5 0
3 years ago
How does the law of conservation of mass apply to this: C2H4+O2→ 2H2O+2CO2
Ahat [919]

Answer:

Add a coefficient of 3 in front of the 02 to balance the 6 O atoms in the products

Explanation:

Add a coefficient of 3 in front of the 02 to balance the 6 O atoms in the products

6 0
3 years ago
Students in an art class are assigned to make a miniature animal sculpture using materials of their own choice. Students who cho
Lina20 [59]

C. Malleability

can i get brainiest?

3 0
3 years ago
Read 2 more answers
Calculate the standard entropy change for the following reaction at 25 °C. S° values can be found here. mg(oh)2 + 2hcl
Olegator [25]

Given reaction:

Mg(OH)2(s) + 2HCl(g) → MgCl2(s) + 2H2O(g)

Formula:

ΔS°rxn = ∑nS°(products) - ∑nS°(reactants)

           = [S°(MgCl2) + 2S°(H2O)] -[S°(Mg(OH)2 + 2S°(HCl)]

           = [89.3+2(188.7)] - [63.22+2(186.80] = 29.88 J/K

Thus, the standard entropy change for the reaction is around 30 J/K

5 0
3 years ago
Other questions:
  • Which element has the smallest atomic radius
    12·2 answers
  • Im looking for love​
    9·1 answer
  • a student buys a rope at the store the label on the packaging says that the Rope is 2.15 m in length the student measures the ro
    5·2 answers
  • Which of the following is equal to 2.3 cm3?
    9·1 answer
  • Consider the following reactions: 1. 2 SO3(g) ⇄ 2 SO2(g) + O2(g) K 1 = 2.3 × 10-7 2. 2 NO3(g) ⇄ 2 NO2(g) + O2 (g) K 2 = 1.4× 10-
    8·1 answer
  • Boojho wants to separate the following materials as combustible and non-combustible. Can you help him?
    11·1 answer
  • Which oneeeeeeeeeeeee
    6·2 answers
  • For the following species, draw a Lewis structure for one important resonance form. Include all lone pair electrons and assign f
    14·1 answer
  • Question 5 of 25
    14·1 answer
  • Perform the following mathematical operation, and report the answer to the correct number of significant figures.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!