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
Paladinen [302]
3 years ago
13

A. You have a stock solution of 14.8 M NH3. How many milliliters of this solution should you dilute to make 1000.0 mL of 0.250 M

NH3?
b. If you take a 10.0 mL portion of the stock solution and dilute it to a total volume of 0.500 L, what will be the concentration of the final solution?
Chemistry
1 answer:
timurjin [86]3 years ago
3 0

Answer:A) V = 16.892 ml

Explanation:

M1 * V1 = M2 * V2

14.8 M * V1 =0.250 M * 1000 ml

V1 = 16.892 ml

You might be interested in
What is the mass in grams of 3x10 atoms of helium
Zepler [3.9K]

Answer:

here

Explanation:

What is the total mass of $$3.01 x 10^23$$ atoms of helium gas?

✓ Well $$"Avogadro's number"$$ of helium atoms has a mass of $$4.0*g$$. Explanation: And $$"Avogadro's number"$$

3 0
3 years ago
Solid aluminum (AI) and oxygen (O_2) gas react to form solid aluminum oxide (Al_2O_3). Suppose you have 7.0 mol of Al and 9.0 mo
Nimfa-mama [501]

Answer:

There will be formed 3.5 moles of Al2O3 ( 356.9 grams)

Explanation:

Step 1: Data given

Numbers of Al = 7.0 mol

Numbers of mol O2 = O2

Molar mass of Al = 26.98 g/mol

Molar mass of O2 = 32 g/mol

Step 2: The balanced equation

4Al(s) + 3O2(g) → 2Al2O3(s)  

Step 3: Calculate limiting reactant

For 4 moles Al we need 3 moles O2 to produce 2 moles Al2O3

Al is the limiting reactant, it will be consumed completely (7 moles).

O2 is in excess.  There will react 3/4 * 7 = 5.25 moles

There will remain 9-5.25 = 3.75 moles

Step 4: Calculate moles Al2O3

For 4 moles Al we'll have 2moles Al2O3

For 7.0 moles of Al we'll have 3.5 moles of Al2O3 produced

Step 5: Calculate mass of Al2O3

Mass Al2O3 = moles Al2O3 * molar mass Al2O3

Mass Al2O3 = 3.5 moles* 101.96 g/mol

Mass Al2O3 = 356.9 grams

There will be formed 3.5 moles of Al2O3 ( 356.9 grams)

3 0
3 years ago
What are alternative periodic tables
aksik [14]
Tabulations of chemical elements differing in their organization from the traditional seen periodic system
5 0
3 years ago
Which postulate of Dalton's atomic theory was later proven wrong?
ruslelena [56]

Answer:

Option c and d

Explanation:

John Dalton. In 1808, John Dalton proposed a theory known as Dalton’s Atomic Theory. The theory was published in a paper titled “A New Chemical Philosophy”. This theory was new to that era

The 5 postulates of Daltons' atomic theory are:

1. All the matters are made of atoms.

2. Atoms of different elements combine to form compounds

3. Compounds contain atoms in small whole-number ratios

4. Atoms can neither be created nor destroyed . (This was later proven wrong )

5. All atoms of an element are identical and have the same properties (This was later proven wrong as atoms of same element may be different in case of elements having isotopes )

Therefore, options c and d are the answer.

6 0
3 years ago
What is wrong with this graph? *<br> 1 point<br> 7<br> 6-<br> 2<br> 0
snow_lady [41]

Answer:

The Red?

Explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which physical property can be measured??
    8·2 answers
  • What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2?
    13·2 answers
  • How many molecules of nitrogen monoxide are in a 22.5 gram sample?
    10·1 answer
  • The pressure of sulfur dioxide in a container is 159 kpa. what is this pressure in atmospheres?
    9·1 answer
  • (science)
    6·2 answers
  • Why doesn't calcium react with water in your body<br> explain pls
    6·2 answers
  • Why aren’t the same natural resources found all over the world?
    15·2 answers
  • Balance the Following Equations: SiCl4 + H2O = SiO2 + HCl
    8·1 answer
  • How
    10·1 answer
  • How do you think life on Earth would be different without the evolution of angiosperms? Provide two examples, each with an expla
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!