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
creativ13 [48]
2 years ago
9

Please help!!

Chemistry
1 answer:
andriy [413]2 years ago
3 0

(I know this is late so hopefully other people find it helpful)

<u>Answer</u>: Solid Cu  

Since this is a <u>voltaic cell</u>:

<u>Copper</u> is the cathode, therefore having a positive charge.

<u>Zinc</u> is the anode, therefore having a negative charge.

(Also, I took the exam and it's correct; good luck everyone!)

You might be interested in
How are ironic bonds and covalent bonds different and how are they different?
Vinil7 [7]
Ionic bonds are forces that hold together electrostatic forces of attractions between oppositely charged ions. Ionic bonds have an electronegativity difference greater than or equal to 2. Covalent bonds have an electronegativity difference that is less than 2.
3 0
3 years ago
7. Write the equation for the positron emission of barium-127.
ziro4ka [17]

The reaction is given by

\\ \rm\Rrightarrow {}^{127}_{56}Ba\longrightarrow {}^{0}_{+1}\beta+{}^{127}_{55}Cs

Barium goes underneath beta decay to form Ceaseum

  • Cs is very mellable element
  • It can melt on your hand
8 0
2 years ago
Oxygen and hydrogen are both elements that are found as gases at room temperature. When oxygen combines with hydrogen, they prod
Tom [10]

Answer:

A

Explanation:

has properties that are different from the original substances.

5 0
2 years ago
If 22.5L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature. What is the new volume?2.A gas with a vol
kykrilka [37]

Answer:

a)23.2 L

b)68.3kPa

c)7.5 atm

d)60.5L

e)1.67 atm

Explanation:

From Boyle's law:

P1V1=P2V2

P1= 748mmHg

P2=725mmHg

V1= 22.5L

V2??

V2= P1V1/P2= 748×22.5/725= 23.2 L

b)

V1=4.0L

P1= 205×10^3Pa

V2= 12.0L

P2=???

P2= P1V1/V2= 205×10^3×4/12

P2= 68.3×10^3 Pa or 68.3kPa

c)

P1= 1 atm

V1= 196.0L

P2= ??

V2= 26.0L

P2= P1V1/V2=1×196.0/26.0

P2= 7.5 atm

d)

V1= 40.0L

P1= 12.7×10^3Pa

V2=???

P2= 8.4×103Pa

V2= P1V1/P2= 12.7×10^3×40.0/8.4×103

V2=60.5L

e)

V1= 100mL

P1= 1atm

V2= 60mL

P2=???

P2= P1V1/V2= 1×100/60

P2= 1.67 atm

4 0
3 years ago
Three factors affecting gas pressure are the amount of gas, temperature, and __________.
Olenka [21]
It's A. volume
Pressure = \frac{moles * const * temperature}{volume}
with const depends on the chosen unit of volume
I think so... 
8 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the correct statement. The cathode is the electrode where the oxidation takes place. Both oxidation and reduction may tak
    5·1 answer
  • Is air a conductor or insulator
    13·2 answers
  • Determine the number of atoms in 1.70 ml of mercury. (the density of mercury is 13.5 g/ml.)
    13·1 answer
  • Does any of these combinations have a change
    9·1 answer
  • Will give brainliest if you show work and have the right answer :)
    7·2 answers
  • A 6.40 g sample of solid KCl was dissolved in 42.0 g of water. The initial temperature of the water was 20.60°C. After the compo
    6·1 answer
  • What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 4.6?
    7·2 answers
  • 3. After the isotope decays, what is the nucleus called?||
    14·1 answer
  • Ca(s) + O2(g) -<br><br> O A. Cao(s)<br> B. Ca2O(s)<br> O C. 2Ca(s) + O2(g)<br> O D. CaO2(s)
    9·1 answer
  • How many neutrones does the isotope n-14 have
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!