1 mole ------------- 6.02 x 10²³ atoms
0.70 moles -------- ( atoms platinum )

atoms platinum = 0.70 x ( 6.02 x 10²³ ) / 1

= 4.2 x 10²³ atoms platinum

hope this helps!

6 0

3 years ago

Mars2501 [29]

Answer:

Explanation: Carbon and silicon BOTH come from Group 14 of the Periodic Table , i.e. both formally have the same number of valence electrons, 4 such electrons.........

5 0

2 years ago

How many moles of Na₂CO₃ required to create 9.54 liters of a 3.4 M solution

GarryVolchara [31]

Answer:

The answer to your question is 32.44 moles

Explanation:

Data

moles of Na₂CO₃ = ?

volume = 9.54 l

concentration = 3.4 M

Formula

Molarity = $\frac{number of moles}{volume}$

Solve for number of moles

number of moles = Molarity x volume

Substitution

Number of moles = (3.4)( 9.54)

Simplification

Number of moles = 32.44

3 0

3 years ago

Read 2 more answers

All of the following are conditions that organisms in a tidepool must withstand except

Vlad1618 [11]

It would be C, constant salinity

4 0

4 years ago