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
Brut [27]
3 years ago
10

When the equation below is correctly balanced, what are the coefficients of Pb and H20, respectively? Pb + H2O + O2 => Pb(OH)

2 A. 1,2 B. 2,1 C. 2,2 D. 1,1 E. none of these
Chemistry
1 answer:
stepan [7]3 years ago
8 0

Answer:

C

Explanation:

Pb + H2O + O2 => Pb(OH)2

Number of oxygen atom on left = 3

Number of oxygen atom on the right = 2

To balance number of oxygen

Change the coefficient of Pb and H2O to two each

2Pb + 2H2O + O2 => 2Pb(OH)2

The coefficient of Pb and H2O is 2,2

You might be interested in
Why do gasses condense when cooled
Darya [45]
Gassed condense because molecules decrease inside
6 0
3 years ago
A student pushes on a crate with a force of 100N directed to the right. What force does the crate exert on the student?
Kamila [148]
Hello!

The force on the student is equal to the force the student exerts, so 100N is your answer. 

Hope this helped :))
6 0
3 years ago
The electron configuration of an element is 1s2 2s2. How many valence electrons does the element have?
faust18 [17]

Answer:

Two valence electrons

Explanation:

7 0
3 years ago
An aluminum ion has a +3 charge. What change did the atom undergo to attain this charge?
lesya692 [45]
When an ion loses electrons, it becomes a positive ion even though it does not lose protons. If there are more protons than electrons in the ion, the ion will have a positive charge.
8 0
3 years ago
Rolls of foil are 302 mm wide and 0.018 mm thick. (The density of foil is 2.7 g/cm3 .)
Kruka [31]

Answer:

The length of foil will be 8107.81 cm or 81.7081 m.

Explanation:

Given data:

Width of roll of foil = 302 mm

Height or thickness = 0.018 mm

Density of foil = 2.7 g/cm³

Mass of foil = 1.19 Kg

Length of foil = ?

Solution:

d = m/ v

v = length (l) × width (w) × height (h)

First of we will convert the Kg into gram and mm into cm.

one Kg = 1000 g

1.19 × 1000 = 1190 g

one cm = 10 mm

302 / 10 = 30.2 cm

0.018 / 10 =  0.0018 cm

Now we will put the values in formula:

d = m/ l× h× w

l = m / d × h× w

l = 1190 g / 2.7 g/cm³× 30.2 cm × 0.0018 cm

l = 1190 g/ 0.146772 g/cm

l = 8107.81 cm or 81.7081 m

3 0
3 years ago
Other questions:
  • When a liquid loses heat it turns into a​
    8·2 answers
  • [Standard Enthalpy of Formation]
    13·2 answers
  • Jenna is a scientist in a chemistry lab. Her experiment did not support her current theory. What should she do next?
    13·2 answers
  • Relationship between the variables of Pressure and Temperature of a gas?
    5·1 answer
  • What is the electron geometry if you have 4 electron groups around the center atom? What is the electron geometry if you have 4
    14·1 answer
  • Find the density of a cube volume of 150 cm and a mass of 100g
    8·1 answer
  • Y
    15·1 answer
  • Question 2
    15·1 answer
  • Give an example for multi cellular fungi​
    11·1 answer
  • lodine-131 is a radioactive isotope with a half-life of 8 days. How many grams of a 50 g sample will be left after 48 days?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!