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
irakobra [83]
2 years ago
13

SOMEONE PLEASE HELP ME WILL MARK BRAINLIEST PLEASE!!

Chemistry
1 answer:
Sholpan [36]2 years ago
4 0

moles of oxygen: 1/2 x moles of water

= 1/2 x 7.8 = 3.9

You might be interested in
I NEED HELP PLEASE, THANKS! BRAINLIEST :)
scoundrel [369]

The principle states that the lowest-energy orbitals are filled first, followed ... electron configuration The arrangement of electrons in an atom, molecule, or other ... and two valence electrons (electrons in the outer shell), respectively; because of this, ... mechanics, a certain energy is associated with each electron configuration.

5 0
2 years ago
Read 2 more answers
Next to each formula, write the number of atoms of each element found in one unit of the compound
satela [25.4K]
To answer this question I would have to know the elements in the compound
7 0
3 years ago
Elimination of the pharmaceutical IV antibiotic gentamicin follows first-order kinetics. If the half-life of gentamicin is 1.5 h
Genrish500 [490]

Explanation:

The given data is:

The half-life of gentamicin is 1.5 hrs.

The reaction follows first-order kinetics.

The initial concentration of the reactants is 8.4 x 10-5 M.

The concentration of reactant after 8 hrs can be calculated as shown below:

The formula of the half-life of the first-order reaction is:

k=\frac{0.693}{t_1_/_2}

Where k = rate constant

t1/2=half-life

So, the rate constant k value is:

k=\frac{0.693}{1.5 hrs}

The expression for the rate constant is :

k=\frac{2.303}{t} log \frac{initial concentration}{concentration after time "t"}

Substitute the given values and the k value in this formula to get the concentration of the reactant after time 8 hrs is shown below:

\frac{0.693}{1.5 hrs} =\frac{2.303}{8 hrs} x log \frac{8.4x10^-^5}{y} \\ log \frac{8.4x10^-^5}{y} =1.604\\\frac{8.4x10^-^5}{y}=10^1^.^6^0^4\\\frac{8.4x10^-^5}{y}=40.18\\y=\frac{8.4x10^-^5}{40.18} \\=>y=2.09x10^-^6

Answer: The concentration of reactant remains after 8 hours is 2.09x10^-6M.

5 0
3 years ago
A solution with a higher concentration of hydroxide ions (oh-) than hydrogen ions (h+)
Hoochie [10]
A solution with a higher concentration of hydroxide ions than hydrogen ions is basic solution.

This solution formed by Base dissolved in water and release hydroxide ions.

The PH of the solution is greater than 7
5 0
3 years ago
A sample of nitrogen gas, (N2), occupies 45.0 mL at 27.00∘C and 80.0 kPa. What will be the pressure if the gas is cooled to −73.
maxonik [38]

Answer:

The new pressure is 53.3 kPa

Explanation:

This problem can be solved by this law. when the volume remains constant, pressure changes directly proportional as the Aboslute T° is modified.

T° increase → Pressure increase

T° decrease → Pressure decrease

In this case, temperature was really decreased. So the pressure must be lower.

P₁ / T₁ = P₂ / T₂

80 kPa / 300K =  P₂/200K

(80 kPa / 300K) . 200 K = P₂ →  53.3 kPa

6 0
3 years ago
Other questions:
  • The question is below
    5·1 answer
  • If 3 g of element C combine with 8 g of element D to
    7·1 answer
  • A small bar of gold whose density is 19.3 g/cm³, displaces 80 cm³ of water when dropped into a beaker. What's the mass of the ba
    14·1 answer
  • SOMEONE JUST PLEASE HELP MEE
    7·2 answers
  • Once of the skills necessary for this experiment is dilution. If you have 1.95 mL of .806 M bleach, what will be the new concent
    6·1 answer
  • Define chemical change and give an example
    13·2 answers
  • How does reducing the use of packaging and other materials conserve resources
    6·1 answer
  • Which of the following interactions are generally considered to be unfavorable? Group of answer choices a)Interaction between Ly
    9·1 answer
  • Chromosomes _____. (Choose all that apply)
    12·1 answer
  • Mass is usually measured using ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!