1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DochEvi [55]
3 years ago
7

Use a periodic table to find symbol,atomic mass number for each of the following elements need help thank you

Mathematics
2 answers:
k0ka [10]3 years ago
7 0
(*KEY*
Element = Symbol, atomic mass #)

Calcium = Ca, 20
Sodium = Na, 11
Carbon = C, 6
Hydrogen = H, 1
Oxygen = O, 8
muminat3 years ago
6 0
Element | Symbol  |  Atomic Number  |  Atomic Mass
Calcium -    Ca                  20                     40.078
Sodium -     Na                  11                     22.990
Carbon -      C                     6                     12.011
Hydrogen -   H                    1                      1.008
Oxygen -      O                    8                      15.999
You might be interested in
Last Wednesday, they sold 100 adult (a), student (s), and senior (1) tickets for a total of $952 50. That evening, ten more stud
Virty [35]

Answer:

bg gbybybbybyv in his ubuvyvyvy tvt the yn

5 0
3 years ago
Can someone help me or is this website a waste of time
Ludmilka [50]

Answer:

Step-by-step explanation:lol what do u need help on

3 0
3 years ago
What is a quick way to determine which savings account will pay the most interest
lbvjy [14]
<span> Just compare the annual percentage yield, or APY, of the </span>accounts<span>. The APY is the rate of return for a one year period. The higher the APY percentage, the </span>more interest<span> you'll receive.</span>
4 0
4 years ago
If the outliers are not included in the data set below, what is the mean of the data set? (2 points)
Salsk061 [2.6K]

Answer:

53.27

Step-by-step explanation:

42+43+46+48+57+60+96+59+38+68+29 = 586

586/11 = 53.27

add all the numbers up and divide by the number of numbers

7 0
4 years ago
Some states are running out of license plate numbers. Delaware currently uses six-digit numbers in its license plate numbering s
expeople1 [14]

Answer:

The answer is letter d

Step-by-step explanation:

This problem is a basic combinatory statistical problem:

Right now Washington uses 3 numerical digits (ranging from 0 to 9 each) and three letters (ranging from A to Z). So each number can be one in 10 and each letter can be one in 26 (the amount of numbers that the alphabet has).

Given n= the amount of possible licence plates and a= the amount of numbers ranging from 0 to 9 (10 possibilities) and b= the amount of letters ranging from A to Z (26 possibilities)

n=a*a*a*b*b*b=17.576.000

So if we switch one a to a b, we increment the amount of possible outputs, that is why when switching all the numbers to letters we exponentially increase the amount of possible license plantes.

4 0
3 years ago
Other questions:
  • Complete the equation. ( 6 feet, 8 inches) + ( 4 feet, 10 inches)
    13·1 answer
  • How do we find the rate of a loan if the total payment is $1,235. The loan was $800 in 5 years
    13·1 answer
  • Gina wants one kind of yogurt and one kind of topping. She can choose lemon, lime or vanilla yogurt. For the toppings, she can c
    14·2 answers
  • Keisha solved the following equation: 4x − 2x + 8 = 6(x + 4) Step Work Justification 1 2x + 8 = 6(x + 4) Combine like terms 2 2x
    7·1 answer
  • Is the Histogram uniform, symmetric, or skewed ?
    5·2 answers
  • Mary lost 30 lbs. Before her diet she weighed 180 pounds. What is the percent of change?​
    5·2 answers
  • *Extra points* Determine if the lines are perpendicular, parallel, or neither. ​
    8·2 answers
  • What is the explicit formula for the sequence -9,-3,3,9,15​
    10·1 answer
  • ~<br>ROB = PTA <br>True or false <br>​
    15·2 answers
  • 8. Last year Tiffany saved $600. This year she<br> saved $780. Find the percent of change.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!