### When phosphorus reacts with chlorine, phosphorus trichloride is formed according

When phosphorus reacts with chlorine, phosphorus trichloride is formed according to the equation:

___P_{4}(*s*) + ___Cl_{2}(*g*)_{ }? ___PCl_{3}(*l*) (unbalanced)

Balance the equation and determine how many grams of chlorine would be required to react with 21.2 g of phosphorus.

A) 12.1 g B) 48.6 g C) 37.0 g D) 148 g E) 72.8 g

42. Nitrogen and hydrogen react together to form ammonia according to the equation:

___N_{2}(*g*)_{ }+ ___H_{2}(*g*)_{ } ? ___NH_{3}(*g*)_{ }(unbalanced)

Balance the equation, and determine how many grams of hydrogen would be required to react with 25.2 g of nitrogen.

A) 1.82 g B) 3.64 g C) 5.45 g D) 1.34 g E) 0.891

43. Nitrogen and hydrogen react together to form ammonia according to the equation:

___N_{2}(*g*)_{ }+ ___H_{2}(*g*)_{ } ? ___NH_{3}(*g*)_{ }(unbalanced)

Balance the equation, and determine how many grams of hydrogen would be required to react with 50.4 g of nitrogen.

A) 10.9 g B) 3.64 g C) 7.28 g D) 2.68 g E) 1.78 g

44. When phosphorus reacts with chlorine, phosphorus trichloride is formed according to the equation:

___P_{4}(*s*) + ___Cl_{2}(*g*)_{ }? ___PCl_{3}(*l*) (unbalanced)

Balance the equation and determine how many grams of phosphorus would be required to form 25.0 g of phosphorus trichloride, assuming there is sufficient chlorine available.

A) 22.6 g B) 45.1 g C) 5.64 g D) 111 g E) 90.2 g

45. When phosphorus reacts with chlorine, phosphorus trichloride is formed according to the equation:

___P_{4}(*s*) + ___Cl_{2}(*g*)_{ }? ___PCl_{3}(*l*) (unbalanced)

Balance the equation and determine how many grams of phosphorus would be required to form 75.0 g of phosphorus trichloride, assuming there is sufficient chlorine available.

A) 67.8 g B) 135 g C) 16.9 g D) 271 g E) 333 g

46. Nitrogen and hydrogen react together to form ammonia according to the equation:

___N_{2}(*g*)_{ }+ ___H_{2}(*g*)_{ }? ___NH_{3}(*g*)_{ }(unbalanced)

Balance the equation, and determine how many grams of hydrogen would be required to form 50.0 g of ammonia, assuming there is sufficient nitrogen available.

A) 4.46 g B) 5.94 g C) 4.81 g D) 8.91 g E) not enough information

47. Nitrogen and hydrogen react together to form ammonia according to the equation:

___N_{2}(*g*)_{ }+ ___H_{2}(*g*)_{ }? ___NH_{3}(*g*)_{ }(unbalanced)

Balance the equation, and determine how many grams of hydrogen would be required to form 25.0 g of ammonia, assuming there is sufficient nitrogen available.

A) 2.23 g B) 4.46 g C) 2.97 g D) 2.40 g E) not enough information

48. If you have eight bicycle wheels and five frames, how many bikes could you build (assuming that each bike requires one frame and two wheels), and what would be left over?

A)Four bikes could be built, and nothing would be left over.

B)Four bikes could be built, and one frame would be left over.

C)Five bikes could be built, and three wheels would be left over.

D)Five bikes could be built, and nothing would be left over.

E)Three bikes could be built, and two frames would be left over.

49. If you wish to make sandwiches which consist of two slices of bread, one ham slice, and three pickle slices, how many sandwiches could you make if you have 12 slices of bread, five slices of ham, and 20 pickle slices, and what would be left over?

A)Six sandwiches could be made, and two pickle slices would be left over.

B)Four sandwiches could be made, and four slices of bread and eight pickle slices would be left over.

C)Five sandwiches could be made, and two slices of bread and five pickle slices would be left over.

D)Twelve sandwiches could be made, and there would be no leftovers.

E)Five sandwiches could be made, and two slices of bread and no pickle slices would be left over.

50. A pamphlet requires one cover, 14 pieces of white paper, and three sheets of colored paper. How many pamphlets could be made, and what would be left over, if there are 50 covers, 500 sheets of white paper, and 100 sheets of colored paper available?

A)33 pamphlets could be made, and one sheet of colored paper, 38 sheets of white paper, and 17 covers would be left over.

B)50 pamphlets could be made, and there would be no leftovers.

C)650 pamphlets could be made, and there would be no leftovers.

D)34 pamphlets could be made, and 24 sheets of white paper and 16 covers would be left over.

E)35 pamphlets could be made, and 10 sheets of white paper and 15 covers would be left over.

abhinav behal
15-Feb-2020