Which of the following shows the 3 main jobs of a cell?

2. Equal length of magnesium ribbon are taken in two test tubes ‘A’ and ‘B, H2SO4 is

s2008m [1.1K]

Answer:

The answer to your question is below

Explanation:

Data

Test tube 1 Test tube 2

Magnesium + Sulfuric acid Magnesium + Acetic acid

Mg + H₂SO₄ Mg + CH₃COOH

a) Test tube 1 will have a more vigorous reaction than test tube 2.

b) Sulfuric acid is a strong acid and Acetic acid is a weak acid.

c)

i.- Sulfuric acid because is a strong acid

ii.- Acetic acid because is a weak acid.

5 0

4 years ago

Which two factors does the power if a machine depend on

Furkat [3]

The definition of mechanical power is

Power = (work done) / (time to do the work).

From that definition, it looks pretty much like the power of a machine

depends on work and time.

8 0

4 years ago

Read 2 more answers

Show the relationship of number of moles and volume in Avogadro's law using data. Write your calculations and answer on a separa

leonid [27]

Answer:

See below ~

Explanation:

The calculated values of V/n :

⇒ 1.5/0.3 = 5

⇒ 3/0.6 = 5

⇒ 4.5/0.9 = 5

⇒ 6/1.2 = 5

⇒ 7.5/1.5 = 5

1. From this we understand that the calculated values of V/n remain constant, equal to <u>5</u> in this case.

2. The volume-mole graph will be a straight line passing through the origin. (Attached below)

7 0

2 years ago

How much heat is needed to raise the temperature of water with mass of 27.0 g at 20.0°C to 45.0°C?

ohaa [14]

Answer:

2835 J

Explanation:

Take the specific heat capacity of water as 4.2 J/ g°C.

Energy (heat) = mass x specific heat capacity x change in temperature

(E= mcΔT)

E = 27 x 4.2 x (45-20)

E = 2835 J

7 0

4 years ago

A voltaic cell that uses the reaction PdCl2−4(aq)+Cd(s)→Pd(s)+4Cl−(aq)+Cd2+(aq) has a measured standard cell potential of +1.03

Ghella [55]

Answer : The balanced two-half reactions will be,

Oxidation half reaction : $Cd(s)\rightarrow Cd^{2+}(aq)+2e^-$

Reduction half reaction : $Pd^{2+}(aq)+2e^-\rightarrow Pd(s)$

Explanation :

Voltaic cell : It is defined as a device which is used for the conversion of the chemical energy produces in a redox reaction into the electrical energy. It is also known as the galvanic cell or electrochemical cell.

In the voltaic cell, the oxidation occurs at an anode which is a negative electrode and the reduction occurs at the cathode which is a positive electrode.

The given redox reaction is:

$PdCl_4^{2-}(aq)+Cd(s)\rightarrow Pd(s)+4Cl^-(aq)+Cd^{2+}(aq)$

The balanced two-half reactions will be,

Oxidation half reaction : $Cd(s)\rightarrow Cd^{2+}(aq)+2e^-$

Reduction half reaction : $Pd^{2+}(aq)+2e^-\rightarrow Pd(s)$

7 0

3 years ago