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
Assoli18 [71]
3 years ago
7

Write the combustion equation for propane (C3H8). What is the sum of the coefficients for the reactants and products? Group of a

nswer choices 13 14 10 11 12
Chemistry
1 answer:
lbvjy [14]3 years ago
8 0

Answer:

13

Explanation:

Let's consider the unbalanced equation for the combustion of propane.

C₃H₈ + O₂ ⇒ CO₂ + H₂O

We will begin balancing H atoms by multiplying H₂O by 4.

C₃H₈ + O₂ ⇒ CO₂ + 4 H₂O

Now, we balance C atoms by multiplying CO₂ by 3.

C₃H₈ + O₂ ⇒ 3 CO₂ + 4 H₂O

Finally, we get the balanced equation multiplying O₂ by 5.

C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O

The sum of the coefficients is 1 + 5 + 3 + 4 = 13.

You might be interested in
Please help I have no idea where to start
azamat

Answer:

Download Ptable, it will show all of the elements, and you can click on them, and it will show all the information you need about them!

Explanation:

I hope this helps!!!!!

3 0
3 years ago
Read 2 more answers
Please help<br> 30 points on this
Usimov [2.4K]
A. Strong & Weak nuclear forces which are attractive. And electromagnetic.
b. Because the more electronegative atom really wants to complete it's valence shell, so it either covalently, or non-covalently bonds to the other atom.
c. Ummm, ask google? Well, it's kind of logical as well, but the part that Coulomb's law plays into it - I do not know.
8 0
3 years ago
Read 2 more answers
According to cell theory _____.
bulgar [2K]

Answer:

Every single living thing are comprised of cells. Cells are the fundamental units of structure and capacity in living things. New cells are delivered from existing cells.

4 0
4 years ago
"How many formula units are there in sample of copper(II) sulfate that has
babymother [125]

Answer: 1.23\times 10^{23} formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{32.5g}{160g/mol}=0.203moles

1 mole of CuSO_4 contains 6.023\times 10^{23} of formula units

Thus 0.203 mole of CuSO_4 contains =\frac{6.023\times 10^{23}}{1}\times 0.203=1.23\times 10^{23} of formula units

8 0
4 years ago
How many uL are present in 250 mL of H20? (1 uL = 10^-6 Liters)​
Vanyuwa [196]

Answer:

250000 μL

Explanation:

If         1 L = 1000 mL

Then  X L = 250 mL

X = (1 × 250) / 1000 = 0.25 L

Now we can calculate the number of microliters (μL) in 0.25 L:

if        1 μL = 10⁻⁶ L

then   X μL = 0.25 L

X = (1 × 0.25) / 10⁻⁶  =250000 μL

4 0
3 years ago
Other questions:
  • Show work
    5·1 answer
  • What is the predicted order of first ionization energies from highest to lowest for lithium (Li), sodium (Na), potassium (K), an
    6·3 answers
  • The enthalpies of formation of the compounds in the combustion of methane,
    11·2 answers
  • How are contact forces and non-contact forces similar?
    12·1 answer
  • Which substance is a molecule?<br> A. water<br> B. sodium<br> C. salt water<br> D. sand and salt
    14·2 answers
  • Balance Na2SO4+CaCl2-&gt;CaSO4+NaCl
    9·1 answer
  • Why aluminium foils are use to wrap food items
    12·2 answers
  • In ideal gas equation calculations, expressing pressure in Pascals (Pa), necessitates the use of the gas constant, R, equal to _
    15·1 answer
  • How many oxygen atoms are present in 3 grams of glucose
    12·1 answer
  • The air temperature of ostley is higher than the air temperature of eastbrook. What is the main cause for the different air temp
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!