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azamat
3 years ago
12

How many moles of potassium nitrate, KNO3 are present in a sample with a mass of 85.2 g?

Chemistry
1 answer:
Bingel [31]3 years ago
5 0
0.843 moles would be the answer
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A molecule with a trigonal bipyramidal electron geometry must have a central atom with how many bonding and nonbonding electron
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5 0
2 years ago
Please help with this true or false
liberstina [14]

Answer:

false

Explanation:

cuz carbon dioxide is greenhouse gasses

8 0
3 years ago
TIMED CHEMISTRY PLZ HELP How many selenium atoms are in the chemical formula for the compound formed when selenium is combined w
Nutka1998 [239]

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Explanation:

6 0
3 years ago
At what temperature is the average speed of oxygen molecules equal to 1.12×104m/s?
expeople1 [14]
 we will use the root mean squared speed of oxygen formula
v= (3RT) / M
T= vM/3R
where
v =1.12x104 m/s; velocity
R=  (8.31447 kg m2 s-2 K-1 mol-1) gas constant

M = 0.0319988 kg/mol; molar mass of oxygen

substituting the given values, we will get 

T(K)= 14.37K or -258.78 C

Oxygen molecules speed of 1.12x104 m/s is at temperature -258.78C.



4 0
4 years ago
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