Particles and Moles

A sample of silver contains 5.71 x 10²² atoms. How many moles of silver are present?

• 3.43 x 10⁴⁶ moles

• 0.0529 moles

• 0.0948 moles

• 10.5 moles

How many molecules are in 6 mole of hydrogen sulfate?

• 6.02x10²³ FU

• 6.02x10¹³⁸ FU

• 5.90x10²⁵ FU

• 3.61x10²⁴ FU

Tags

NGSS.HS-PS1-7

A bag of fertiliser contains 14.52 kg of ammonium nitrate (NH₄NO₃). Calculate the number of moles of ammonium nitrate in the bag of fertiliser.

_{Give your answer to 1d.p}

Which of the following would have more mass?

• mole of Li

• mole of Au

• mole of Si

• None, all are equal

What is the mass of 0.75 moles of ammonium phosphate?

• 0.0044 g

• 91 g

• 110 g

• 74 g

Determine the mass of 2.40 moles of C₆H₁₂

• 201 g

• 115 g

• 230. g

• 353 g

A lump of MgO consists of 100 moles. What is the mass in grams?

How many moles are in 8.30 X 10²³ molecules of H₂O?

• 1.38 X 10²³ moles H₂O

• 1.38 moles H₂O

• 2 moles H₂O

• 1 mole H₂O

Tags

SC3.c.

If container A is 10L and is under 5 atm of pressure and container B is 10L, but under 7 atm of pressure, what is true about the number of particles inside the containers?

• can not tell from the information

• they contain the same number of particles

• container A has less particles

• container B has less particles

Which box has the most pressure?

• The one to the far right, since it is the most dense and more chance of collisions

• The one to the far left, since it has more space to move and collide with the walls.

• All of them has the same pressure

Tags

NGSS.HS-PS1-3