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
pashok25 [27]
3 years ago
9

Cobalt has an atomic number of 27 and atomic mass of 59. How many neutrons does cobalt have? 

Chemistry
1 answer:
elena-s [515]3 years ago
3 0

Answer:

32

Explanation:

59-27

You might be interested in
What is the mass of 2.90 ×1022 formula units of NaOH (Molar mass = 40.0 g/mol)?
enyata [817]
<h3>Solution:</h3>

\text{mass of NaOH = 2.90 × 10²² NaOH formula units} × \frac{\text{1 mol NaOH}}{\text{6.022 × 10²³ NaOH formula units}} × \frac{\text{40.0 g NaOH}}{\text{1 mol NaOH}}

\boxed{\text{mass of NaOH = 1.926 g}}

5 0
3 years ago
Read 2 more answers
Calculate the heat change in calories for melting 65 g of ice at 0 ∘c.
Genrish500 [490]

When ice melts, the physicals state changes from solid to liquid. The energy or the heat required (q) required to change a unit mass (m) of a substance from solid to liquid is known as the enthalpy or heat of fusion (ΔHf). The variables; q, m and ΔHf are related as:

q = m * ΔHf

the mass of ice m = 65 g

the heat of fusion of water at 0C = ΔHf = 334 J/g

Therefore: q = 65 g * 334 J/g = 21710 J

Now:

4.184 J = 1 cal

which implies that: 21710 J = 1 cal * 21710 J/4.184 J = 5188.8 cal

Hence the heat required is 5188.8 cal or 5.2 Kcal (approx)

5 0
3 years ago
Suppose that a fictitious element, x, has two isotopes: 59x (59.015 amu) and 62x (62.011 amu). the lighter isotope has an abunda
professor190 [17]

The atomic mass of the element would simply be equal to the sum of the weighted average of each isotope, that is:

atomic mass = 59.015 amu * 0.717 + 62.011 amu * (1 – 0.717)

<span>atomic mass = 59.863 amu</span>

4 0
3 years ago
The amplitude of a wave is the distance between a point on one wave and the identical point on the next wave T or F?
MaRussiya [10]
The amplitude of a wave is the distance between a point on one wave and the identical point on the next wave. The period and wavelength of a wave are inversely proportional.
7 0
3 years ago
Tiny sacs in the lungs where gas exchange takes place are called ____?
SSSSS [86.1K]

Answer:

Alveoli

Explanation:

I hope this helps you.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Edta is a synthetic amino acid, which the body perceives as a foreign substance. edta is therefore delivered to the kidneys and
    6·1 answer
  • What monatomic ions would you expect potassium (Z = 19) and bromine (Z = 35) to form?
    11·1 answer
  • How would you determine the proper number of significant figures for measurement of a liquid using a graduated cylinder?
    14·1 answer
  • Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five tr
    15·1 answer
  • What is the significance of an electronegativity difference of 1.7 between 2 atoms?
    11·2 answers
  • If you were going to be a scientist, what type of scientist would you be?
    11·2 answers
  • What is the definition of atomic group
    5·1 answer
  • Which element, Phosphorus or Calcium, is more reactive? Why?
    6·1 answer
  • Analyze the following chemical combinations<br>a) MgO<br>b)CaCl2<br>c) Na2O​
    13·1 answer
  • A calorimeter contains 72.0 g of water at 19.2 oC. A 141 g piece of metal is heated to 89.0 oC and dropped into the water. The e
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!