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
djyliett [7]
2 years ago
10

Fill missing reagents.

Chemistry
1 answer:
omeli [17]2 years ago
3 0

Answer:

ABCDEFGJJJYDSSFHNNN

You might be interested in
Researchers want to determine the best temperatures for storing batteries. Describe a possible experiment and list the variables
Andrew [12]
How about putting one battery in the freezer while putting another by a radiator or something that gives off heat. Leave them for an hour, then place them in an object that uses batteries and time how long it takes for it to die: Note: It may take many hours for the battery to fully deplete.
4 0
3 years ago
15-9+6+3 =? What's the answer of this? ​
julia-pushkina [17]
15-9+6+3=

ANSWER

15
6 0
3 years ago
What is the empirical formula for a compound that is 82.2% nitrogen and 17.8% hydrogen?
Stolb23 [73]
Empirical formula=CH3
3 0
3 years ago
A rock contains 0.623 mg of 206Pb for every 1.000 mg of 238U present. Assuming that no lead was originally present, that all the
maxonik [38]

Answer:

t = 3,496x10⁹ years

Explanation:

The decay of ²³⁸U is:

²³⁸U → ²⁰⁶Pb + 8He + 6e⁻

Moles of ²⁰⁶Pb presents in 0,623mg are:

0,623x10⁻³g×(1mol / 206g) = 3,02x10⁻⁶ moles of ²⁰⁶Pb.

These moles are equals to moles of ²³⁸U before decay, that means, 3,02x10⁻⁶ moles²³⁸U

In grams:

3,02x10⁻⁶ moles²³⁸U× (238g / 1mol) = 7,20x10⁻⁴ g ²³⁸U = 0,720 mg²³⁸U

That means initial ²³⁸U was 1,000mg + 0,720mg =<em> 1,720mg</em>

Applying the formula:

ln (N₀/N) t₁₂ = t ln2

Where N₀ is initial amount of uranium (1,720mg), N is concentration of uranium (1,000mg),  half-life time is a constant (t₁₂= 4,468x10⁹ years) and t is the time transcurred for the reaction. Replacing:

ln(1,720/1)*4,468x10⁹ years = t ln2

<em>t = 3,496x10⁹ years</em>

<em></em>

I hope it helps!

6 0
2 years ago
which of the following pairs of molecules can form hydrogen bonds between them? group of answer choices ch3oh and nh3 hcl and hi
Alik [6]

Answer:

Hydrogen Bond is the force that exists when H is directly connected to F, O, or N. HCl and HI cannot form hydrogen bonds between them. CH3OH and NH3 can form hydrogen bonds between them. CH4 and H2O cannot form hydrogen bonds between them.

Explanation:

5 0
2 years ago
Other questions:
  • What is the concentration of the silver ion in silver chromate, Ag₂CrO₄, if its solubility product constant (Kₛₚ) is 1.2 x 10⁻¹²
    7·1 answer
  • How many moles of O2 should be supplied to burn 1.82 mol of C3H8 (propane) molecules In a camping stove?
    6·1 answer
  • A 3.0 L solution contains 73.5 g of H2SO4. Calculate the molar concentration of the solution.
    7·1 answer
  • In the unit 2 lab, what combination produced a brown bubbly liquid that looks like root-beer? (Select the two parts of the combi
    8·1 answer
  • Ethylene glycol (antifreeze) has a density of 1.11 g/cm3.
    13·1 answer
  • Why were the iron fillings in a water a suspension?
    10·2 answers
  • 47.060 centimeters to meters 470.6
    9·1 answer
  • Which of the following is a property of a pure substance?
    11·2 answers
  • (-15)+(-12)+14<br><br>how do u simplify ​
    14·1 answer
  • If the density of a liquid is 5 g/mL and the mass is 65 g, what would the volume be?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!