Question

Question 51 pts

What is oxidized in Zn(s) + SnCl₂(aq) --> Sn(s) + ZnCl₂(aq) ?

SnCl₂(aq)

Sn(s)

Nothing is oxidized, only reduced.

ZnCl₂(aq)

Zn(s)

Flag this Question

Question 61 pts

What has bonds breaking and new bonds forming during a reaction?

endothermic

Activation energy

transition state

exothermic

Delta H

Flag this Question

Question 71 pts

How many moles is 9.257 x 10²¹ atoms of argon?

1.54 x 10⁴³ moles argon

1.54 x 10⁴⁴ moles argon

1.538 moles argon

1.54 x 10⁴⁵ moles argon

0.0154 moles argon

Flag this Question

Question 81 pts

How many grams is 2.85 moles of bromine liquid?

455 g

228 g

2.85 g

0.0178 g

0.0357 g

Flag this Question

Question 91 pts

How many liters is 5.55 x 10²⁴ molecules of CO₂ gas at STP ?

9.22 L

0.412 L

2.07 x 10⁴⁸ L

207 L

7.48 L