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
liubo4ka [24]
3 years ago
9

Based on the equations below, which metal is the most active? pb(no3)2 (aq) + ni (s) â ni(no3)2 (aq) + pb (s) pb(no3)2 (aq) + ag

(s) â no reaction cu(no3)2 (aq) + ni (s) â ni(no3)2 (aq) + cu (s)
Chemistry
1 answer:
erastova [34]3 years ago
3 0

Answer is: nickel (Ni) is the most active metal.

Chemical reaction 1: Pb(NO₃)₂(aq) + Ni(s) → Ni(NO₃)₂(aq) + Pb(s).

Chemical reaction 2: Pb(NO₃)₂(aq) + Ag(s) → no reaction.

Chemical reaction 3: Cu(NO₃)₂(aq)) + Ni(s) → Ni(NO₃)₂(aq) + Cu(s).

From chemical reactions 1 and 3, we can conclude that nickel is more reactive than lead (Pb) and copper (Cu), because lead is more reactive than silver (Ag), chemical reaction 2, nickel is also more reactive than silver.

In chemical reaction 2, no reaction occurs because silver is less reactive than lead. Lead is higher in activity series of metals and can not be reduced.

Nickel is higher in activity series of metals than lead, copper and silver.

The activity series is a series of metals from highest to lowest reactivity. Metal higher in the reactivity series will displace another.

You might be interested in
1. A sample of polystyrene is found to have a number-average molar mass of 89,440 g mol−1 . Neglecting contributions from end gr
Snowcat [4.5K]

Answer:

The weight-average molar mass of polystyrene is 134,160 g/mol.

Explanation:

Molar mass of the monomer styrene , C_8H_8, M=104 g/mol

Given , number average molar mass of the polymer , M'= 89,440 g/mol

Degree of polymerization = n

n=\frac{M'}{M}=\frac{89,440 g/mol}{104 g/mol}=860

The weight-average molar mass = M_{avg}=?

Molar mass dispersity is ratio of weight-average molar mass to the number average molar mass of the polymer.

\text{Molar mass dispersity}=\frac{M_{avg}}{M'}

1.5=\frac{M_{avg}}{89,440 g/mol}

M_{avg}=89,440 g/mol\times 1.5 = 134,160 g/mol

The weight-average molar mass of polystyrene is 134,160 g/mol.

8 0
3 years ago
Elements in the same period have the same ___________?​
tiny-mole [99]

Answer:

number of energy levels

Explanation:

for example hydrogen and helium are in period 1 and they have 1 energy level

7 0
2 years ago
If you have a substance, would it have the same density no matter what mass of the substance you have?
Leni [432]
Assuming all other conditions equal, then, yes, the density would not change regardless of the mass of the substance. This is because the density is a ratio of the mass substance to its volume. If you increase the mass, the volume displaced would also be greater. So, it would just adjust making the density constant. This is applicable if it is at the same temperature and pressure conditions.
3 0
3 years ago
A positively charged ion has
Burka [1]
A positively charged ion is referred to as a cation, it is formed through the loss of valence electrons.
4 0
3 years ago
Which of the following is correct?
Katarina [22]
B Through the ground (earthquakes)
5 0
3 years ago
Other questions:
  • 35 Which element reacts with oxygen to form ionic bonds?(1) calcium (3) chlorine
    5·2 answers
  • A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants.
    11·1 answer
  • Calculate the concentration of OH- in a solution that contains 3.9 x 10-4 M H3O+ at 25°C. Identify the solution as acidic, basic
    8·1 answer
  • How water deposits soil sediment and rock
    8·1 answer
  • To measure a specific volume of a gas, you must have a(n)
    10·2 answers
  • How many total electrons are shared between two nitrogen atoms when they bond to form a diatomic nitrogen molecule?
    7·1 answer
  • Review the PCR (Calvin-Benson-Basham) cycle and the photochemical (light) reactions. If photosynthesizing green algae are provid
    10·1 answer
  • What product or ratio of properties remains constant (PxT, TxV, P/V, V/T, etx)?When you have decided, label the "constant?" colu
    7·1 answer
  • An equimolar mixture of X (g) and Y (g) is placed inside a rigid container at constant temperature. The particle diagram above r
    11·1 answer
  • The density of aluminum is 2.70 g/mL. The volume of a solid piece of aluminum is 1.50 ml. What is its mass?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!