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Questions (24)
Suppose a substance has been prepared that is composed of carbon, hydrogen, and nitrogen. When 0.1156 gram of this compound is
4 answers
2,453 views
A. State Ohm’s law
B.Describe the process of electrolysis C. What is the relationship between resistance and resistivity D.
0 answers
621 views
A display sign is supported by a guy making an angle of 37o with the horizontal and by a bracket at the upper end near the
0 answers
673 views
A ladder rests against a smooth wall (by smooth wall, we mean that the wall exerts in the ladder only a force that is
1 answer
1,300 views
A display sign is supported by a guy making an angle of 37o with the horizontal and by a bracket at the upper end near the
0 answers
771 views
A 5kg object placed on a frictionless, horizontal table connected to a string that passes over a pulley and then is fastened to
1 answer
1,340 views
A bag of cement of weight 325N hangs from wires as Shawn. Two of the wires make angels al=60 degrees a2=50 degrees with the
0 answers
624 views
A tire 0.5m in radius rotates at a constant rate of 200 rev/min.find the speed and acceleration of a stone lodged in the tread
1 answer
711 views
A person walks 25 northeast for 3.10km.how far would she have to walk due north and due east to arrive at the same location?
0 answers
458 views
An archaeologist begins a trip by first walking 30km southeast from the campsite. He stops and sets up a temporal camp for the
0 answers
585 views
The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of
1 answer
1,085 views
A Zambian Air Force jet lands with a speed of 100m/s and can accelerate at maximum rate of -5m/s as it comes to rest
(a) from the
3 answers
823 views
A fundamental law of motion states that the acceleration of an object is directly proportional to the resultant force exerted on
0 answers
816 views
show the expression v=at is dimensionally correct where v represents speed an acceleration and t is instant time?
0 answers
1,276 views
The 4.000g sample of M2S3 is converted to MO2 and loses 0.277g.what is the atomic weight of M?
2 answers
2,819 views
The active ingredients of an antacid tablet contained only magnesium hydroxide and aluminium hydroxide. Complete neutralization
2 answers
2,202 views
Two different chloride compounds of platinum are known, compound X and Y. When 3.45g of compound X is heated, 2.72g of compound
1 answer
874 views
A 5.000 gram sanple of dry mixture of potassium hydroxide, potassium carbonate and potassium chloride is reacted with 0.100L of
1 answer
909 views
A 2.077g sample of an element which has an atomic mass between 40 and 55 reacts with oxygen to form 3.708g of an oxide.
1 answer
1,322 views
For the reaction below,when the reaction when 0.5000g of X13 reacts completely, 0.2360g of XC13 is obtained. Calculate the
1 answer
536 views
0.197g of magnesium is burned in air
2Mg + O2 ---> 2MgO However, some of the magnesium reacts with nitrogen in the air to form
3 answers
894 views
when the supply of oxygen is limited, iron metal reacts with oxygen to produce a mixture of FeO and Fe203.in a certain
2 answers
4,293 views
1. A 12.5843g sample of zrbr4 was dissolved and after several steps all of the combined bromine was precipitated as ArBr. The
1 answer
734 views
A salt contains only barium and one of halides ions. A 0.1480g sample of the salt was dissolved in water and an water and an
1 answer
1,218 views
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