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
Lelechka [254]
3 years ago
6

I need help please my teaching is going to go crazy if I didn’t do it

Chemistry
1 answer:
victus00 [196]3 years ago
4 0

Answer:

No One is going to answer all this because it hard to type it all in her. its easy to search it up

Explanation:

You might be interested in
Calculate the atomic mass of Carbon if the two common isotopes of carbon have masses of
Mars2501 [29]

Answer:

Average atomic mass of carbon = 12.01 amu.

Explanation:

Given data:

Abundance of C¹² = 98.89%

Abundance of C¹³ = 1.11%

Atomic mass of C¹² = 12.000 amu

Atomic mass of C¹³ = 13.003 amu

Average atomic mass = ?

Solution:

Average atomic mass of carbon = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass of carbon = (12.000×98.89)+(13.003×1.11) /100

Average atomic mass of carbon=  1186.68 + 14.43333 / 100

Average atomic mass of carbon = 1201.11333 / 100

Average atomic mass of carbon = 12.01 amu.

5 0
3 years ago
How many significant figures are in 4.800x10-3?​
seraphim [82]
4 after solving =0.004800 where 4,800 is the significant number
5 0
2 years ago
What is the initial temperature of 50g of water that was raised to 50*C by the addition of 4.18kJ of heat energy? (2 sig fig)
Alekssandra [29.7K]

Answer:

50

Explanation:

7 0
3 years ago
Someone help please.
mojhsa [17]

After 3 half life periods you would have 5 grams of krypton left because half of 40 is 20 half of 20 is 10 and half of 10 is 5

6 0
3 years ago
Calculate e°cell for a silver-aluminum cell in which the cell reaction is al(s) + 3ag+(aq) → al3+(aq) + 3ag(s) –2.46 v 0.86 v –0
tekilochka [14]
When E° cell is an electrochemical cell which comprises of two half cells.
 
So,

when we have the balanced equation of this half cell :

Al3+(aq) + 3e- → Al(s)   and E°1 = -1.66 V 

and we have  also this balanced equation of this half cell :

Ag+(aq)  + e- → Ag(s)  and E°2 = 0.8 V 

so, we can get E° in Al(s) + 3Ag (aq) → Al3+(aq) + 3Ag(s)

when E° = E°2 - E°1

∴E° =0.8 - (-1.66)

      = 2.46 V

∴ the correct answer is 2.46 V




6 0
3 years ago
Other questions:
  • By what mechanism does cyclohexanol react when treated in sulfuric acid and what compound results?A) E 1; methoxycyclohexane B)
    6·1 answer
  • Which form of energy is non-renewable?<br> A. sunlight<br> B. fossil fuels<br> C. water<br> D. wind
    10·2 answers
  • I NEED HELP ASAP!!! THIS IS A 30 POINT QUESTION!!!
    11·2 answers
  • What result in a chemical change in matter
    12·1 answer
  • Answer the questions for the following reaction at chemical equilibrium: Cl2(g) + KBr(aq) &lt;----&gt; KCl(aq) + Br2(l) + heat 1
    13·2 answers
  • Onic bonds are formed between metal and nonmetal elements. Potassium has only one valence electron and it is stripped away in th
    15·2 answers
  • Stoichmetric calculations must not be based on the limiting reagent<br>true or false
    14·1 answer
  • [Please see the attatched photo]​
    10·2 answers
  • Mixtures of hydrogen and oxygen in varying concentrations can be sparked to produce water. Define mixture and compound, and then
    15·1 answer
  • The half-life of carbon-14 is approximately 5700 years. An archaeologist unearths a piece of wood that is determined to
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!