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what is the mass of chlorine molecules (Cl2) that contains twice as many molecules as found in 3.6g of water?
a gas jar contains 240cm3 of carbon dioxide gas. calculate :
a) number of moles of carbon dioxide gas
b) number of molecules of carbon dioxide gas
c) mass of carbon dioxide gas
calculate the number of atoms in the following substances.
i) 13 g of zinc, Zn
ii) 5.6 g of nitrogen gas, N2
iii) 8.5g or ammonia gas, NH3
iv) 14.2 g of chlorine gas,Cl2
The Head of the Math Department announced that the mean score of Grade 11 students in St. James High School in the medterm examination in statistics and probability was 88 and the standard deviation was 10. One student who believed that the mean score was less than this, randomly selected 35 students and computed their mean score. She obtained a mean score of 84. At 0.01 level of significance, test the student’s belief.
The following are the ages of 8 jeepney passengers in a waiting shed: 12, 15, 18, 19, 21, 23, 35, and 40. The sample with size 7 is chosen to ride in the current jeepney. Determine the number of possible samples with size 7
A electron passes through a magnetic field at 60° to the field at a velocity of 3.5×10⁶m/s. What is the magnitude of the force acting on the electron having a 0.45T magnetic field?
. A consignment of 12 electronic components contains 1 component that is faulty. Two components are chosen randomly from this consignment for testing.
a. How many different combinations of 2 components could be chosen?
b. What is the probability that the faulty component will be chosen for testing?
Given a sentence with numbers representing a word's location embedded within each word of given sentence, return the sentence according to the number in each word.
Example:
str = "is2 thi1s T4est 3a"
the word " is2 " contains 2 - so the word "is location is 2
the word "Thi1s" contains 1 - so the word "this" location is 1
the word "T4est" contains 4 - so the word "Test" location is 4
the word "3a" contain 3 - so the word "a" location is 3
this is a Test
Constraints:
only the integers 1-9 will be there
input format :
the first line contains a string input
Input:
is3 cri1stiano 4the rona2ldo 5best
expected output:
cristiano Ronaldo is the best
Given a sentence with numbers representing a word's location embedded within each word of given sentence, return the sentence according to the number in each word.
Example:
str = "is2 thi1s T4est 3a"
the word " is2 " contains 2 - so the word "is location is 2
the word "Thi1s" contains 1 - so the word "this" location is 1
the word "T4est" contains 4 - so the word "Test" location is 4
the word "3a" contain 3 - so the word "a" location is 3
this is a Test
Constraints:
only the integers 1-9 will be there
input format :
the first line contains a string input
A Sample of water under study was found to boil at 102°C at normal atmospheric pressure is the water pure, will this water freeze at 0°C. comment.
