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
Sauron [17]
3 years ago
8

When the equation __H2O2 --> __H2O + __O2 Is completely balanced, the sum of all the coefficients will be A) 5 B) 8 C) 3 D) 4

Chemistry
1 answer:
kkurt [141]3 years ago
8 0

Answer:

A)5

Explanation:

2H2O2 --> 2H2O + 1O2

2+2+1=5

sum=5

You might be interested in
What are complementary bases?
Radda [10]

Answer:

Two Sections that contain nitrogen of a nucleotide that bond together to connect strands of DNA or RNA.

Explanation:

3 0
3 years ago
A 200 g of sugar was dissolved in 100 ml of water describe the solution
yarga [219]

Answer:

b

Explanation:

mark me as brainliest have a great day

7 0
2 years ago
Complete combustion of 2.60 g of a hydrocarbon produced 8.46 g of co2 and 2.60 g of h2o. what is the empirical formula for the h
zubka84 [21]
1 mole of carbon dioxide contains a mass of 44 g, out of which 12 g are carbon. 
Hence, in this case the mass of carbon in 8.46 g of CO2:
 (12/44) × 8.46 = 2.3073 g
 1 mole of water contains 18 g, out of which 2 g is hydrogen;
Therefore, 2.6 g of water contains;
 (2/18) × 2.6 = 0.2889 g of hydrogen.
Therefore, with the amount of carbon and hydrogen from the hydrocarbon we can calculate the empirical formula.
We first calculate the number of moles of each,
Carbon = 2.3073/12  = 0.1923 moles
Hydrogen = 0.2889/1 = 0.2889 moles
Then, we calculate the ratio of Carbon to hydrogen by dividing with the smallest number value;
             Carbon : Hydrogen
  0.1923/0.1923 : 0.2889/0.1923
                       1 :  1.5
                      (1 : 1.5) 2
                     = 2 : 3
Hence, the empirical formula of the hydrocarbon is C2H3
5 0
4 years ago
A gamma ray photon has an energy of 4.75 x 10-14 joules. What is the frequency of this radiation?
Rama09 [41]

The frequency of the radiation is equal to 7.17  \times 10^{19} Hertz.

<u>Given the following data:</u>

  • Photon energy = 4.75 \times 10^{-14} Joules

To find the frequency of this radiation, we would use the Planck-Einstein equation.

Mathematically, the Planck-Einstein relation is given by the formula:

E = hf

<u>Where:</u>

  • h is Planck constant.
  • f is photon frequency.

Substituting the given parameters into the formula, we have;

4.75 \times 10^{-14} = 6.626 \times 10^{-34} \times F\\\\F = \frac{4.75 \times 10^{-14}}{6.626 \times 10^{-34}}

Frequency, F = 7.17  \times 10^{19} Hertz

Read more: brainly.com/question/16901506

4 0
2 years ago
Multiple choice.<br> Please help.
Ludmilka [50]

Answer:

7. B

8. B

9. A

10. A

11. Increases

Again..I hope it helps.✌

7 0
3 years ago
Other questions:
  • What mass of powdered drink mix is needed to make a 0.5 M solution of 100 mL?
    12·2 answers
  • Oil and water a combined to make salad dressing.
    14·2 answers
  • What is standard volume
    6·1 answer
  • If one object is hot and another one cold, thermal energy
    15·1 answer
  • Perfume evaporating is it a chemical change or physical change
    10·2 answers
  • If all the deer disappeared from this community, which change would be most
    10·2 answers
  • Substances have a fixed arrangement of atoms. true or false (NO LINKS PLEASE)
    5·1 answer
  • If 0.500 mol of acetylene is allowed to completely react with oxygen, what is the final yield of CO2 in moles?
    8·1 answer
  • About how long does it take for the reaction to reach equilibrium in this concentration versus time graph?
    13·1 answer
  • Carbon monoxide and nitrogen monoxide react to produce carbon dioxide and nitrogen gas. if the system contains platinum, then le
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!