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
Assoli18 [71]
4 years ago
10

Please help with what equation and what numbers to plug in, I can do the rest.

Chemistry
1 answer:
ohaa [14]4 years ago
8 0
20 protons it takes for the answer
You might be interested in
1. What is the kinetic energy of 44 kg cheetah running at 31m/s speed?
Vanyuwa [196]

Explanation:

Given

mass (m) = 44 kg

velocity (v) = 31 m/s

Now

Kinetic energy

= 1/2 mv²

= 1/2 * 44 * 31²

= 0.5 * 44 * 961

= 21142 joule

Hope it will help you :)

3 0
3 years ago
How many moles of water are needed in order to produce 218 g of calcium
ella [17]

Answer:

-------> CH2 + Ca(OH)2

0.59 moles

111 moles

30 moles

0.15 moles

3 0
3 years ago
Determine the mass of an object that, when places in a 25-mL Graduated cylinder containing 14 mL of water, causes the level of t
lakkis [162]
Mass = Density x Volume
Mass = 3.2g/mL x 5 mL
Mass = 16g
7 0
3 years ago
Read 2 more answers
In a controlled experiment the factor tested is called the
Lostsunrise [7]
In a controlled experiment the factor tested is called the experimental group
5 0
4 years ago
How do you perform calculations relating to isotopes. describe please
Zigmanuir [339]

Explanation:

I'm not sure if this is what you are looking for but i will attempt to answer.

Isotopes are variations of the same atom. They have the same number of protons but have a different number of neutrons. As a result of this, the atomic number remains the same but the mass number changes.

A calculation you could perform in relation to isotopes would be calculating the relative atomic mass. The relative atomic mass is the weighted average of masses of isotopes.

Relative atomic mass (RAM)= the addition of

\frac{relative \: isotopic \: mass \times percentage \: abundance}{100 }

For example, the element Indium has a relative isotopic mass of 112.90406, 4.29% of the time. It has a relative isotopic mass of 114.903878, 95.71% of the time.

From this

RAM=

\frac{112.904061 \times 4.29}{100}  +  \frac{114.903878 \times 95.71}{100}  = 114.8(4 \: sig \: figs)

8 0
3 years ago
Other questions:
  • What do sedimentary rock layers reveal about ancient environments?
    13·1 answer
  • How many significant figures does 507.2m have?
    8·2 answers
  • An electron in a sodium atom moves from the third shell to the fourth shell. This change is a result of the atom
    14·1 answer
  • Identify examples of the list below. Check all that apply
    7·2 answers
  • How to make fluffy slime without contact solution?
    8·2 answers
  • Zebra mussels have no???
    11·1 answer
  • What happens when a piece of Mg ribbon is burnt? Name the
    10·1 answer
  • Two students (X and Y) measured the diameter of a gold coin four
    12·1 answer
  • What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800.
    9·2 answers
  • Atoms with the same number of protons but different masses (from different numbers of neutrons) are called:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!