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
Sladkaya [172]
3 years ago
12

11. Calculate the number of atoms in 2.00g of platinum.

Chemistry
2 answers:
Serggg [28]3 years ago
7 0

Answer:

Explanation:

All you need to know is the atomic mass of platinum, and Avogadro's number.

2.00g Pt divided by atomic mass gives you the moles of platinum, and multiplying by avogadro's number (6.022 x 10^23) gives you the number of atoms.

Atomic mass of platinum can be found on any periodic table.

Hope this helped.

pochemuha3 years ago
5 0
Here’s the answer I think?

You might be interested in
What mass of oxygen is needed to combust and produced 6.4 moles of carbon dioxide gas?
N76 [4]
You have already gotten the balanced equation. And the ratio of mol number of reactants and production is the ratio of coefficient. So there is 6.4/8*11=8.8 mol oxygen needed. The mass is 8.8*32=281.6 g.
6 0
3 years ago
Who summarized Greek medical knowledge in a textbook that would dominate medical teaching until the Scientific Revolution?
ss7ja [257]
I recently wrote a paper on animal testing

Pretty sure it was Galen
3 0
3 years ago
Read 2 more answers
Which branch of chemistry would be used to make steel?
Tpy6a [65]

Answer:

the five major branches of chemistry are organic, inorganic, analytical, physical, and biochemistry.

5 0
3 years ago
Planck’s constant is approximately equal to which of the following?
KonstantinChe [14]
Henlo!
Bohr's model was unable to calculate or it required precise information about position of an electron and its velocity. It is very difficult to calculate velocity and position of an electron at the same time because electron i too small to see and may only be observed if peturbed, for example we could hit the electron with another particle such as photon or an electron, or we could apply electric or magnetic field to the electron. This will inevitably change the position of the elctron or its velocity and direction. Heisenberg aid that more precisely we can define the position of an electron, the less certainity we are able to define its velocity and vice versa. 
In short, first option is correct one

7 0
3 years ago
Any DBZ fans??????????????????????//<br><br> ??????????????
Mnenie [13.5K]

Answer:

ummmmmmmmmm what's that???

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is TRUE about polar covalent bond?
    14·1 answer
  • What is the best description of the Bohr model of the atom?
    6·1 answer
  • Using the equation PCl S(g) PCl 3(g) +Cl 2(g) , if PCl 3 is added, what way will the equilibrium shift?
    15·1 answer
  • During resperation______.
    15·1 answer
  • An engineer chooses to use bamboo as a building material because it grows
    15·2 answers
  • Vitamin K is involved in normal blood clotting. When 0.802 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point
    11·1 answer
  • How many moles of chlorine gas are in 1.2m^3 at room temperature and pressure?
    5·1 answer
  • What is the mass % of acetonitrile in a 2.17 M solution of acetonitrile (MM = 41.05 g/mol) in water? The density of the solution
    5·1 answer
  • A spring running horizontally has areas with the coils closer together and areas with them farther apart. A label A points to ar
    14·2 answers
  • There are three different dichloroethylenes (molecular formula C₂H₂Cl₂), which we can designate X, Y, and Z. Compound X has no d
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!