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
azamat
2 years ago
15

?cobalt has a density of 8.90 g. what volume would 17.8 g of Cobalt occupy?

Chemistry
1 answer:
Airida [17]2 years ago
5 0

Answer:

Explanation:

Given parameters:

Density of cobalt = 8.9gcm⁻³

Mass of cobalt = 17.8g

Solution

Density can be defined as the mass per unit volume of a substance:

                      Density = \frac{mass in g}{volume in cm^{3} }

The unknown in the problem is Volume:

                    Volume = \frac{mass}{Density}

                     Volume =   \frac{17.8}{8.9} = 2cm³

You might be interested in
A mixture is made by combining 1.49 lb of salt and 3.82 lb of water.
Pavel [41]

Answer:

28%

Explanation:

concentration=(solute mass/solution mass)*100

C=concentration

md-solute mass

ms-solution mass

the solution mass is equal to the sum of the solute and solvent mass

ms=3.82+1.49=5.31lb

c=1.49/5.31 * 100=0.28*100=28%

7 0
3 years ago
How many moles of O atoms are present in a 254 g sample of carbon dioxide?
MaRussiya [10]

Answer:

11.6mol

Explanation:

CO2 = 44g

2 mol of O2 = 44g

X mol of O2 = 254

Cross multiply

X= 11.6mol

3 0
2 years ago
A 5 mL sample of an unknown liquid is placed into a 250 mL flask that has had all of the air removed. The pressure measured in t
Brrunno [24]

Answer:

See explanation below

Explanation:

In this case, we can use the Boyle's law. Assuming that the temperature of both trial remains constant, then:

P₁V₁ = P₂V₂    (1)

You should note that this expression is usable when you are dealing with gases. However, we can treat this unknown liquid as a gas, because all the air on the flask is removed, and we can assume that the liquid can behave like an ideal gas.

So using the above expression, we can solve for P₂:

P₂ = P₁V₁ / V₂    (2)

In this case, we already have the values of presures and volume, so replacing in this expression:

P₂ = 34.5 * 5 / 214

<h2>P₂ = 0.806 kPa</h2>

This should be the pressure of the liquid.

Hope this helps

8 0
3 years ago
During which phase change do water molecules form crystal lattice?. A.Melting. B.Freezing. C.Boiling. D.Condensing.
nadezda [96]
The phase in which water molecules form crystal lattice is : B. Freezing

When water undergone a freezing phase, it will trapped a specific amount of Gases inside it. Crystal lattice is basically the gas molecule that trapped within the water

hope this helps
6 0
3 years ago
Read 2 more answers
Suggest a reason why gold is expensive, even though it is found native in rock.​
Delvig [45]
Because it’s rare to find, and has a Extraordinary color that most rocks don’t have. Please mark as brainliest
6 0
2 years ago
Other questions:
  • What is the limiting reactant if 8 g of Ba reacts with 2.8 g of Al2(SO4)3?
    10·1 answer
  • 4. Ammonium nitrate (NH4NO3) fertilizer decomposes explosively into gaseous nitrogen, oxygen, and water, resulting in huge therm
    14·1 answer
  • You have been injured in the laboratory (cut,burn,etc) first you should
    12·2 answers
  • The ________ of an adult male is 750 newtons.
    5·1 answer
  • What is one important discovery that the curies made
    10·1 answer
  • What are isotopes used for in chemistry
    15·1 answer
  • A hydrogen atom has a radius of 2.5 x 10^11m
    12·2 answers
  • How many moles of Fe2O3 can be made from 50 moles of Fe?
    5·1 answer
  • Calculate the pH of the following <br> A.0.02mol/L HCI<br>B. 0.1 mol/L NaOH​
    14·2 answers
  • What is the percent of O in<br> CO2?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!