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
leva [86]
3 years ago
8

If you fill this out 20 points, but I need all the answers

Chemistry
1 answer:
Rashid [163]3 years ago
6 0

Answer:

Li   3   7   3   4   3

P   15   31   15   16   15

Cl   17   35   17   18   17

Ni   28   59   28   31   28

Ne   10   39   10   29   10

Ag   47   108   47   61   47

H   1   1   1   0   1

Si   14   28   14   14   14  

W   74   184   74   110   74

Ne   10   20   10   10    10

Explanation:

Atomic number and the number of protons are the SAME

number of protons are electrons are the SAME

mass #- protons = Neutrons

Neutrons- mass #= protons

I HAVEN'T DONE THIS IN A WHILE SO I HOPE EVERYTHING IS CORRECT

You might be interested in
A motorcycle that travels north 201m in 7s. What is it's velocity?<br> 7. D=<br> 8. TE<br> 9. V=
timama [110]
The velocity would be 0.5 i think
6 0
3 years ago
Which is the correct formula for phosphorus pentachloride?
klio [65]

PCl5

hope this helps

have a wonderful day

5 0
3 years ago
Read 2 more answers
What was the ball's average speed during the time represented on the graph?
nadya68 [22]

Answer:

Explanation:

<em>0.5 i go to k12 i jus took the test</em>

4 0
2 years ago
Read 2 more answers
What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?
mr Goodwill [35]

Explanation:

molarity = no. of moles of solute/solution in litres

molarity =0.202/7.98

=0.025 M

8 0
3 years ago
How many parts per million of lead is found in 250 ml of water if there is 1.30g of lead in the water? 1ml=1g
SSSSS [86.1K]

Answer:

5200 ppm

Explanation:

As per the definition, parts per million of a contaminant is a measure of the amount of mass of contaminant present per million amount of the solution. It is denoted by ppm.

Given in the question,

Water = 250 ml = 250 g

Lead = 1.30 g

So,

ppm of Lead = \frac{Lead}{Water} \times 10^6 = \frac{1.30}{250} \times 10^6 = 5200 ppm

So, as calculated above, there is 5200 ppm of lead present in 250 ml of water.

6 0
3 years ago
Other questions:
  • (a) How much negative charge is on each oxygen of the carbonate ion?
    5·1 answer
  • What is the mass of 4.5 x 10^22 molecules of hydrogen peroxide H2O2
    12·1 answer
  • When you add a controlled amount of substance known as an impurity to a pure semiconductor, its conductivity increases. This pro
    12·1 answer
  • how emissions, such as sulfur dioxide, nitrogen oxides or carbon dioxide from power plants contribute to the making of ozone?
    13·1 answer
  • A single glucose molecule produces about 38 molecules of ATP through the process of cellular respiration. However, this only rep
    8·1 answer
  • How are plan and animal cells different?
    14·2 answers
  • A jar is filled to the top with water, and a piece of cardboard is slid over the opening so that there is only water in the . If
    5·2 answers
  • What is the difference between sea and ocean
    5·2 answers
  • Question 2 of 10
    6·2 answers
  • When servers or sellers break state, county, or municipal alcohol laws when serving or selling alcohol, the server or seller
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!