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
Ann [662]
3 years ago
5

Is frictional force desirable?​

Chemistry
1 answer:
gavmur [86]3 years ago
6 0

Answer: Friction is a force that resists relative motion between two surfaces in contact. Depending on the application, friction may be desirable or undesirable.

You might be interested in
What are subatomic particles?​
vova2212 [387]

Explanation:

a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).

6 0
2 years ago
Calculate the amount of gold deposited when a current of 5A is passed through a solution of gold salt for 2hrs 15mins. If the sa
Nataliya [291]

Answer:

a. 82.68 g b. 9.8 min

Explanation:

a. The amount of gold deposited by 5 A current in 2 hrs 15 mins

Since charge Q = It where I = current = 5 A and time = 2 hrs 15 mins = 2 × 60 min + 15 min = 120 + 15 min = 135 min = 135 × 60 s = 8100 s

Q = 5 A × 8100 s

= 40500 C

Also, Q = nF where n = number of moles of gold deposited and F = Faraday's constant = 96500 C

n = Q/F = 40500 C/96500 C = 0.4195 moles ≅ 0.42 mole

Now n = m/M where m = mass of gold and M = molar mass of gold = 197

m = nM

= 0.42 × 197 g

= 82.68 g

b. The time taken for 6g of gold to be deposited.

We first find the number of moles of gold in 6g of gold

Since n = m/M and m = 6 g

n = 6/197 = 0.0305 mole

Q = It = nF

t = nF/I

= 0.0305 mol × 96500 C/5 A

= 2939.09 mol C

= 587.82 s

Changing t to minutes

587.82/60 s = 9.8 min

8 0
4 years ago
Brainliest grind of 2014i-
aksik [14]

Answer:

IM just too pogchamp

Explanation:

5 0
3 years ago
Which electron configuration represents an excited state for an atom for calcium
vaieri [72.5K]

The electron configuration that represent an excited state for an atom of calcium is 2, 8, 7, 3.

Calcium atom has an atomic number of 20 and its electronic configuration is 2, 8, 8, 2. An atom is said to be in an excited state if it gains energy and move to an higher energy level. For the calcium atom given above, there are 20 electrons which are distributed into four shells. But in the excited state [option 3], one of the 8 electrons in the third shell gains energy and move to the fourth shell. Thus, the number of electrons in the third shell reduced by 1, while the number of electrons in the fourth shell increase by 1.

5 0
3 years ago
Read 2 more answers
How will you prepare 10mL of 0.050M HCl from a 0.10M solution of HCl
vichka [17]
M₁V₁ = M₂V₂

(0.050M)*(10 mL) = (0.10M)*(x)

x = 5 mL

You would take 5 mL of the 0.10 M solution of HCl and add 5 mL of deionized water. Therefore, the total volume will be 10 mL and it will have a molarity of 0.050.
7 0
3 years ago
Other questions:
  • write the symbolic notation of an isotope of an element having 8 protons 8 electrons and 11 neutrons click on the Templates butt
    15·1 answer
  • Flow of heat energy through liquids and<br> gases
    8·1 answer
  • Covalent solutes are considered non-electrolytes. What does this mean for the conductivity of the solution? A) Non-electrolytes
    7·2 answers
  • How does radioactive isotopes decay?
    13·1 answer
  • Calculate the percentage of water in the hydrate manganese (ii) nitrate tetrahydrate
    6·2 answers
  • The atomic number for iodine? 1/53. 2/10. 3/13. 4/16
    13·1 answer
  • HELP PLEASE I WILL GIVE YOU BRAINLIEST
    9·1 answer
  • How many molecules of Acetic Acid (CH3COOH) are in a sample that has a mass of 172.90 g?
    9·1 answer
  • How much energy was lost in the total process illustrated? Please Help
    7·2 answers
  • What's the chemical equation for the carbon dioxide bubbles in a homemade lava lamp?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!