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
Burka [1]
3 years ago
10

Strategies for Preve.

Chemistry
1 answer:
Veseljchak [2.6K]3 years ago
3 0

Answer:

i don't know myself either

You might be interested in
How many moles are in 8.11 X 1020 molecules of CH4?<br> &lt; &gt;
Gre4nikov [31]

Answer:

6.022⋅1023

Explanation:

4 0
3 years ago
Determine the value of the equilibrium constant, Kgoal, for the reaction C(s)+12O2(g)+H2(g)⇌12CH3OH(g)+12CO(g), Kgoal=? by makin
Licemer1 [7]

Answer:

1.71x10²⁷

Explanation:

If we sum 1/2 of (3) + 1/2 of (1):

1/2 (3.) C(s) + 1/2O₂(g) ⇌ CO(g), K₃ = √2.10×10⁴⁷  = 4.58x10²³

1/2 (1)   1/2CO₂(g) + 3/2H₂(g) ⇌ 1/2CH₃OH(g) + 1/2H₂O(g), K₁ = √1.40×10² = 11.8

C(s) + 1/2O₂(g) +<u> 1/2CO₂(g) </u>+<u> 3/2H₂(g</u>) ⇌ 1/2CH₃OH(g) + <u>1/2H₂O(g)</u> + <u>CO(g)</u>

K' = 4.58x10²³ * 11.8 = 5.42x10²⁴

+1/2 (2):

<u>1/2 CO(g)</u> +<u> 1/2H₂O(g)</u> ⇌<u> 1/2CO₂(g)</u> + <u>1/2H₂</u> (g), K = √1.00×10⁵ = 316.2

C(s) + 1/2O₂(g) + H₂(g) ⇌ 1/2 CHO₃H(g) + 1/2CO(g)

K'' = 5.42x10²⁴* 316.2 =

<h3>1.71x10²⁷</h3>

5 0
4 years ago
a substance is analyzed to have a percent composition of 74.186% sodium and 25.814% fluorine. calculate the empirical formula
Novosadov [1.4K]

Answer:

Na₂₆F₁₁

Explanation:

We find the moles of the substance assuming 100 g of the substance is present. Why do we take 100 g? Because then the percent of sodium/fluorine, would be the g of sodium/fluorine respectively:

74.186 g Sodium | 1 mol Sodium/23 g              =>       3.2255 mol Na    

25.814 g Fluorine | 1 mol Fluorine/19 g             =>       1.3586 mol F

Divide each by smallest number of moles:

3.2255/1.3586 = 2.37

1.3586/1.3586 = 1

Multiply by common number to get a smallest whole number:

2.37*11 = 26,

1*11 = 11

The empirical formula is Na₂₆F₁₁

5 0
3 years ago
Weeds growing in a garden will compete with vegetable plants for sunlight, water, and nutrients.
Yuki888 [10]

Answer:

different species

Explanation:

weeds and vegetables are both plants, but they are completely different types of plants.

5 0
3 years ago
Chemical bonding is the combining of atoms to form ______________?
svet-max [94.6K]
A i believe its atoms
4 0
3 years ago
Read 2 more answers
Other questions:
  • The ph of lemon juice is approximately 2.4. at this ph, the hydronium ion concentration is closest to which value? 1. 250 m 2. 4
    11·2 answers
  • Three isotopes of argon occur in nature – 36 18Ar, 38 18Ar, 40 18Ar. Calculate the average atomic mass of argon to two decimal p
    15·1 answer
  • The ksp of calcium carbonate, caco3, is 3.36 × 10-9 m2. calculate the solubility of this compound in g/l.
    6·1 answer
  • Calculate the molality of acetone in an aqueous solution with a mole fraction for acetone of 0.241. Answer in units of m.
    6·1 answer
  • "a compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an"
    11·1 answer
  • In which of the following locations are bacteria often found?
    11·1 answer
  • In an electron dot diagram of fluorine , how many dots should be drawn around the elements symbol
    12·1 answer
  • ?;huguryutgiuiuiojcxfty
    11·1 answer
  • When is expressing numbers using scientific notation useful?
    10·1 answer
  • Balance the equation: H2O2 → H2O + O2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!