PLZ HELP I NEED THE ANSWERS NOW FOR A TEST
1. There are moles in 9.01 x 10^23 atoms.
none of the above
15
0.150
1.50
2. How many sulfur atoms are present in 41.8 moles of sulfur?
Question 2 options:
2.52 x 10^25 S atoms
6.94 x 10^29 S atoms
1.44 x 10^24 S atoms
4.18 x 10^25 S atoms
3.How many moles would 1.00 x 10^23 molecules of methane (CH4) represent?
Question 3 options:
1.66 moles
0.166 moles
0.0166 moles
none of the above
4.How many moles of iron (Fe) are in a sample of 7.91 x 10^23 atoms of iron?
Question 4 options:
1.31 mol Fe
0.761 mol Fe
7.91 mol Fe
47.6 mol Fe
5.How many oxygen atoms are present in 2.28 moles of nitric acid, HNO3?
Question 5 options:
7.39 x 10^23 O atoms
4.119 x 10^23 O atoms
4.12 x 10^24 O atoms
1.37 x 10^24 O atoms
Answers: 2
Chemistry, 22.06.2019 03:00
Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.
Answers: 3
Chemistry, 22.06.2019 05:30
You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount
Answers: 1
Chemistry, 22.06.2019 06:30
Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?
Answers: 2
Chemistry, 22.06.2019 17:30
Energy defines the different "states" of matter. in no more than 3 sentences, describe the amount of kinetic energy that each of the 3 states of matter possesses and relate that to the atom/molecular motion of each "state".
Answers: 2
PLZ HELP I NEED THE ANSWERS NOW FOR A TEST
1. There are moles in 9.01 x 10^23 atoms.
no...
no...
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