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Vilka [71]
3 years ago
14

What is pure carbon made of

Computers and Technology
2 answers:
GuDViN [60]3 years ago
6 0

Answer:

Explanation:Carbon is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Three isotopes occur naturally, ¹²C and ¹³C being stable, while ¹⁴C is a radionuclide, decaying with a half-life of about 5,730 years

DerKrebs [107]3 years ago
3 0

Answer: Both diamond and graphite are made entirely out of carbon, as is the more recently discovered buckminsterfullerene (a discrete soccer-ball-shaped molecule containing carbon 60 atoms). The way the carbon atoms are arranged in space, however, is different for the three materials, making them allotropes of carbon. (My Notes)

Explanation:

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When inspecting a fire extinguisher: A) The seal should not be broken B) The safety pin should be removed for easier use C) The
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Write a program that asks the user to enter a student's name and 8 numeric tests scores (out of 100 for each test). The name wil
sergeinik [125]

Answer:

// program in Python

# function to find grade

def grade(t_score):

   #grade A

   if t_score >=90:

       return 'A'

       #grade B

   elif t_score >=80 and t_score <90:

       return 'B'

   #grade C

   elif t_score >=70 and t_score <80:

       return 'C'

   #grade D

   elif t_score >=60 and t_score <70:

       return 'D'

   #grade F

   else:

       return 'F'

# function to find average score

def calc_average(test_score):

   #variable to find sum

   total = 0

   for i in range(len(test_score)):

       #calculate total score

       total = total + test_score[i]

   # find average

   return total/float(len(test_score))

#array to store score

test_score = []

#read name of student

name = input("Enter student's name: ")

for i in range(8):

   #read score

   t_score = int(input("Enter the score {}: ".format(i+1)))

   #add score to array

   test_score.append(t_score)

#call function to find Average

averageScore = calc_average(test_score)

#print name of Student

print("Student Name: ", name)

#print each Score

for i in range(len(test_score)):

   #print each Score and Grade

   print("Score: ",test_score[i], "Letter Grade: ",grade(test_score[i]))

# print Average Score

print("Average Score: ", averageScore)

Explanation:

Read name of student from user.Then read 8 test scores from user. Call the function grade() to find the grade of a test score.Call the function calc_average() to  find the average score of all test.Print each score and corresponding grade and print  average score.

Output:

Enter student's name: Sam                                                                                                  

Enter the score 1: 45                                                                                                      

Enter the score 2: 98                                                                                                      

Enter the score 3: 67                                                                                                      

Enter the score 4: 86                                                                                                      

Enter the score 5: 60                                                                                                      

Enter the score 6: 77                                                                                                      

Enter the score 7: 92                                                                                                      

Enter the score 8: 32                                                                                                      

Student Name:  Sam                                                                                                        

Score:  45 Letter Grade:  F                                                                                                

Score:  98 Letter Grade:  A                                                                                                

Score:  67 Letter Grade:  D                                                                                                

Score:  86 Letter Grade:  B                                                                                                

Score:  60 Letter Grade:  D                                                                                                

Score:  77 Letter Grade:  C                                                                                                

Score:  92 Letter Grade:  A                                                                                                

Score:  32 Letter Grade:  F                                                                                                

Average Score:  69.625  

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