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
kipiarov [429]
2 years ago
15

How many atoms is 2.34 moles of titanium?

Chemistry
2 answers:
uysha [10]2 years ago
8 0

1.409 \times  {10}^{24} \:  \:  atoms

<u>Explanation:</u>

Convert from moles to atoms:

2.34 mol titanium (Ti)

Determine the amount of substance, n:

n = 2.34 mol

Look up Avogadro's constant, N_A , to find the number of atoms in a mole:

N_A = 6.022×10^23 atoms/mol

Multiply n by N_A to convert to the number of atoms, N_{atoms}:

Precise Answer:

N_{atoms} = n× N_A= (2.34 mol)/1×(6.022×10^23 atoms)/(1 mol) = 1.409×10^24 atoms

BartSMP [9]2 years ago
7 0
2.34 moles titanium x (6.022 x 10^23)/1 mole titanium = 1.41 x 10^24
You might be interested in
Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs, and to ignite solid-fuel ro
melamori03 [73]

<u>Answer:</u> The mass of nickel (II) oxide and aluminium that must be used is 18.8 g and 4.54 g respectively.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

  • <u>For nickel:</u>

Given mass of nickel = 14.8 g

Molar mass of nickel = 58.7 g/mol

Putting values in equation 1, we get:

\text{Moles of nickel}=\frac{14.8g}{58.7g/mol}=0.252mol

For the given chemical reaction:

3NiO(s)+2Al(s)\rightarrow 3Ni(l)+Al_2O_3(s)

  • <u>For nickel (II) oxide:</u>

By Stoichiometry of the reaction:

3 moles of nickel are produced from 3 moles of nickel (II) oxide

So, 0.252 moles of nickel will be produced from \frac{3}{3}\times 0.252=0.252mol of nickel (II) oxide

Now, calculating the mass of nickel (II) oxide by using equation 1:

Molar mass of nickel (II) oxide = 74.7 g/mol

Moles of nickel (II) oxide = 0.252 moles

Putting values in equation 1, we get:

0.252mol=\frac{\text{Mass of nickel (II) oxide}}{74.7g/mol}\\\\\text{Mass of nickel (II) oxide}=(0.252mol\times 74.7g/mol)=18.8g

  • <u>For aluminium:</u>

By Stoichiometry of the reaction:

3 moles of nickel are produced from 2 moles of aluminium

So, 0.252 moles of nickel will be produced from \frac{2}{3}\times 0.252=0.168mol of aluminium

Now, calculating the mass of aluminium by using equation 1:

Molar mass of aluminium = 27 g/mol

Moles of aluminium = 0.168 moles

Putting values in equation 1, we get:

0.168mol=\frac{\text{Mass of aluminium}}{27g/mol}\\\\\text{Mass of aluminium}=(0.168mol\times 27g/mol)=4.54g

Hence, the mass of nickel (II) oxide and aluminium that must be used is 18.8 g and 4.54 g respectively.

4 0
3 years ago
Calculate the number of grams of carbon found in a 5 mole sample of carbon.
Ksenya-84 [330]

Answer:

60g

Explanation:

1mol of carbon has 12g

3 0
3 years ago
Curium-242 undergoes alpha decay. In addition to the alpha particle, which
ratelena [41]

Answer:

D. 238 94 pu

Explanation:

8 0
3 years ago
Read 2 more answers
What volume will 0.405 g of krypton gas occupy at STP?
Rufina [12.5K]

Answer:

The answer to your question is V = 0.108 L or 108 ml

Explanation:

Data

Volume = ?

mass = 0.405 g

Temperature = 273°K

Pressure = 1 atm

Process

1.- Convert mass of Kr to moles

                  83.8 g of Kr -------------------- 1 mol

                     0.405 g     -------------------  x

                     x = (0.405 x 1) / 83.8

                     x = 0.0048 moles

2.- Use the Ideal gas law to solve this problem

                   PV = nRT

- Solve for V

                      V = nRT / P

- Substitution

                      V = (0.0048)(0.082)(273) / 1

- Simplification

                       V = 0.108 / 1

- Result

                       V = 0.108 L

8 0
3 years ago
Read 2 more answers
8. What group numbers are the transition elements in?
Anna007 [38]
The 38 elements in groups 3 through 12 of the periodic table are called "transition metals". As with all metals, the transition elements are both ductile and malleable, and conduct electricity and heat. The interesting thing about transition metals is that their valence electrons, or the electrons they use to combine with other elements, are present in more than one shell. This is the reason why they often exhibit several common oxidation states. There are three noteworthy elements in the transition metals family. These elements are iron, cobalt, and nickel, and they are the only elements known to produce a magnetic field I HOPE THIS HELP:)
3 0
3 years ago
Other questions:
  • 50 mL of 2M H2SO4 react with 75 mL of 2M NaOH. Identify the limiting and excess reactants
    5·1 answer
  • What are protons explained simply
    7·2 answers
  • If the temperature of a 5 L sample of gas is lowered from 400k to 200k, what will the resulting volume of the gas be?
    6·1 answer
  • What does the muscular system do
    8·1 answer
  • A sealed container with liquid water in the bottom was left standing at a constant temperature until the air above the water sur
    7·1 answer
  • Can somebody answer this please
    15·1 answer
  • can anyone help with this mole to mole/mole to grams question? any help would be greatly appreciated! Thanks!
    13·1 answer
  • Besides each sentence, write T if the sentence is mostly about using technology.
    9·1 answer
  • Some students observe four different lab investigations. The students record their observations in a table.
    13·2 answers
  • 8. A 220 mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275K. The piston
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!