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
Nat2105 [25]
3 years ago
7

PLEASE HELP ME I DON'T UNDERSTAND PLEASE HELP THIS IS MY LAST QUESTION I WILL GIVE BRAINLIEST

Chemistry
1 answer:
wolverine [178]3 years ago
7 0

Answer:

Because they all have different characteristics and they are not just things that the scientists say. they are all different but some of them have the Same charateristics

You might be interested in
2 The change in the velocity of an object is defined as its​
ollegr [7]

Answer:

Acceleration is the rate of change in velocity

3 0
2 years ago
Read 2 more answers
Which process produces the energy that is used by solar panels?
Montano1993 [528]
A. Combustion since it can’t be nuclear….?
8 0
2 years ago
Read 2 more answers
What is true about energy in an ordinary chemical reaction? Energy is
Lisa [10]
The answer is statement #3.
4 0
3 years ago
Read 2 more answers
During a chemical reaction, the______
WINSTONCH [101]

Answer:

limiting reagent :)

Explanation:

5 0
2 years ago
Read 2 more answers
When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(II)
katen-ka-za [31]

Answer:

3.81 g Pb

Explanation:

When a lead acid car battery is recharged, the following half-reactions take place:

Cathode: PbSO₄(s) + H⁺ (aq) + 2e⁻ → Pb(s) + HSO₄⁻(aq)  

Anode: PbSO₄(s) + 2 H₂O(l) → PbO₂(s) + HSO₄⁻(aq) + 3H⁺ (aq) + 2e⁻

We can establish the following relations:

  • 1 A = 1 c/s
  • 1 mole of Pb(s) is deposited when 2 moles of e⁻ circulate.
  • The molar mass of Pb is 207.2 g/mol
  • 1 mol of e⁻ has a charge of 96468 c (Faraday's constant)

Suppose a current of 96.0A is fed into a car battery for 37.0 seconds. The mass of lead deposited is:

37.0s.\frac{96.0c}{s} .\frac{1mole^{-} }{96468c} .\frac{1molPb}{2mole^{-} } .\frac{207.2gPb}{1molPb} =3.81gPb

6 0
3 years ago
Other questions:
  • The combustion of pentane, C5H12, occurs via the reaction
    5·2 answers
  • A radio station's channel, such as 100.7 FM or 92.3 FM, is actually it's frequency in megahertz, where 1 MHz=10^6Hz and 1 Hz=1s^
    6·1 answer
  • What is the equation for concentration with Solutes and Solvents?​
    13·1 answer
  • Balance the equation
    13·1 answer
  • The bottom number on each element on the Periodic Table is called
    10·1 answer
  • __________ often cause overactive eye movement. A. Stimulants B. Depressants C. Barbiturates D. None of the above
    8·2 answers
  • Need a little help with science please
    6·2 answers
  • How many grams do 1.5 x 1026 atoms of magnesium weigh?
    15·1 answer
  • SCIENCE ANSWER ASAP PLEASE!!
    15·1 answer
  • If the temperature is below zero, what will the precipitation most likely be?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!