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
Zanzabum
3 years ago
11

Water is produced from the reaction of hydrogen and oxygen gas, according to the equation below. What is the excess reactant in

the reaction of 4.2 moles of hydrogen with 3.0 moles of oxygen?
2H2(g) + O2(g) = 2H2O(l)
Select one:
a.Water
b.Oxygen
c.No excess reactant
d.Hydrogen
Chemistry
2 answers:
insens350 [35]3 years ago
7 0

Answer:

2H2O means two molecules of water(H2O)

VashaNatasha [74]3 years ago
5 0

Answer:

b.Oxygen

this is the excess reactant

Why?

2 moles of hydrogen react with 1 mole of oxygen. So, 4.2 moles of hydrogen would need 2.1 moles of oxygen. There are 3.0 moles of oxygen. So, there are 0.9 moles of oxygen in excess.

You might be interested in
I need yall help with this one and i can make yall brilientist if u get it right plus yall get 50 points
mixas84 [53]

Answer:

D

Explanation:

6 0
3 years ago
Read 2 more answers
Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
11Alexandr11 [23.1K]

Taking into account the scientific notation,  the result of the subtraction is 6.5×10⁵.

<h3>Scientific notation</h3>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.
<h3 /><h3>Subtraction in scientific notation</h3>

You want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵

Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:

7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵

Finally, the result of the subtraction is 6.5×10⁵.

Learn more about scientific notation:

brainly.com/question/11403716

brainly.com/question/853571

#SPJ1

3 0
2 years ago
How many moles are in 1.29 x 1024 hydrogen atoms in HF
zepelin [54]

Answer:

No. Moles  = 2.142   mole

7 0
3 years ago
chemical properties a. include changes of state of a substance b. include mass and color c. include changes that alter the ident
8_murik_8 [283]
C. Include changes that alter the identity of a substance. 
6 0
3 years ago
12. List examples of physical and chemical properties.
gladu [14]

Answer:Phase Transformation Temperatures

Density

Specific Gravity

Thermal Conductivity

Linear Coefficient of Thermal Expansion

Electrical Conductivity and Resistivity

Magnetic Permeability

Corrosion Resistance

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Is scientific notation used to express large numbers in convenient form?
    6·1 answer
  • CO is a primary pollutant.
    12·2 answers
  • Matter can totally be created or destroyed.<br><br> True<br> False
    6·1 answer
  • Mg(OH)2 + HCl --&gt; MgCl2 + H2O
    14·1 answer
  • A 24.00 mL sample of a solution of Pb(ClO3)2 was diluted with water to 52.00 mL. A 17.00 mL sample of the dilute solution was fo
    15·1 answer
  • For each solution, calculate the initial and final pH after the addition of 0.010 mol of NaOH.
    10·1 answer
  • What are sodium salts of long-chain fatty acids called?
    6·2 answers
  • Which acid is stronger: HBrO2 or HBrO3 ?
    12·1 answer
  • PLEASE HELP ILL GIVE BRAINLIEST
    10·1 answer
  • What type of energy is a light switch
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!