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
Dmitrij [34]
2 years ago
8

What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?

Chemistry
1 answer:
lys-0071 [83]2 years ago
8 0

Answer:

Explanation:

<u><em>What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?</em></u>

<em></em>

PE = MGH, that is, potential energy = mass x gravity x height.

2*2*9.8=

39.2 joules

You might be interested in
C. If 62.9 g of lead (II) chloride is produced, how many grams of lead (II) nitrate were
melomori [17]

Answer:

Mass = 76.176 g

Explanation:

Given data:

Mass of lead(II) chloride produced = 62.9 g

Mass of lead(II) nitrate used = ?

Solution:

Chemical equation:

Pb(NO₃)₂  +  2HCl     →     PbCl₂ + 2HNO₃

Number of moles of lead(II) chloride:

Number of moles = mass/molar mass

Number  of moles = 62.9 g/ 278.1 g/mol

Number of moles = 0.23 mol

Now we will compare the moles of lead(II) chloride with Pb(NO₃)₂ from balance chemical equation:

                            PbCl₂        :          Pb(NO₃)₂

                               1             :             1

                             0.23         :            0.23

Mass of Pb(NO₃)₂:

Mass = number of moles ×  molar mass

Mass = 0.23 mol × 331.2 g/mol

Mass = 76.176 g

8 0
3 years ago
Calculate the volume of 4.50 mol of SO2 (g) measured at STP. At STP: P = 101.3 kPa, T = 273.15 K A. 87.3 L B. 101 L C. 127 L D.
miss Akunina [59]

Answer:

B

101L

Explanation:

We use the ideal gas relation

PV = nRT

P = pressure = 101.3KPa

V = volume = ?

n = number of moles = 4.5moles

T = Temperature = 273.15K

R = molar gas constant = 8.314J/mol.k

Rearranging the equation to make V the subject of the formula yields :

V = nRT/P

= ( 4.5 × 8.314 × 273.15) ÷ 101.3

= 10,219.361 ÷ 101.3 = 100.88L which is apprx 101L

8 0
3 years ago
What is respiration explain in own words please
pashok25 [27]

Answer: the process by which cells use oxygen to break down sugar and obtain energy.

4 0
2 years ago
Read 2 more answers
In a(n) ____, the particles form a regular, repeating pattern.
Effectus [21]
For the answer to the question above, asking what is t<span>he particles form a regular, repeating pattern.

The answer to this question is the last one among the given choices which is </span><span>D.) crystalline solid

I hope my answer helped you. Feel free to ask more questions. Have a nice day!</span>
4 0
3 years ago
Fog is an example of a <br> a)colloid<br> b) solution <br> c) suspension
Bond [772]
Fog is an example a) colloid
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement best reflects a change in weather
    6·2 answers
  • In at least 4 sentences, explain how access to technology may have an impact to what energy sources are used? THINK- industriali
    9·1 answer
  • What scientific laws did Newton present in Principia?
    5·2 answers
  • Which reaction results in the GREATEST increase in entropy?
    14·1 answer
  • Cuantos mililitros de HC10.1M contiene 0.025 mol de HC1
    12·1 answer
  • How is activation energy represented on an energy diagram?
    10·2 answers
  • Please i need help really quickly on this. thank you​
    7·1 answer
  • Which of kbr or ch3br is likely to have the higher normal boiling point?
    13·1 answer
  • Octane has a density of 0.703 g/ml. Calculate the mass of CO2(g) produced by burning one
    10·1 answer
  • Where are these chemical reactions happening?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!