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
Vikki [24]
3 years ago
15

Osmium is one of the densest elements known, what is its density if 2.72 g has a volume of 0.121 cm3?

Chemistry
2 answers:
AnnZ [28]3 years ago
7 0
Mass / volume = density
2.72g/0.121mL = 22.5g/mL

1cm3 = 1mL
kramer3 years ago
3 0

Explanation:

The given data is as follows.

          mass = 2.72 g

          volume = 0.121 cm^{3}

As the density is mass divided by volume.

Mathematically,     Density = \frac{mass}{volume}

Hence, putting the given values into the above formula and calculate the density as follows.

              Density = \frac{mass}{volume}

                           = \frac{2.72 g}{0.121 cm^{3}}

                           = 22.47 g/cm^{3}

Thus, we can conclude that density of osmium is 22.47 g/cm^{3}.

You might be interested in
G. Amount of charge required to reduce
Nady [450]

Answer:

\boxed{\text{c) 4 F}}

Explanation:

1. Write the skeleton equation for the half-reaction

NO₃⁻ ⟶ N₂O

2. Balance all atoms other than H and O

2NO₃⁻ ⟶ N₂O

3. Balance O by adding H₂O molecules to the deficient side.

2NO₃⁻ ⟶ N₂O + 5H₂O

4. Balance H by adding H⁺ ions to the deficient side.

2NO₃⁻ + 10H⁺ ⟶ N₂O + 5H₂O

5. Balance charge by adding electrons to the deficient side.

2NO₃⁻ + 10H⁺ + 8e⁻ ⟶ N₂O + 5H₂O

The amount of charge required to reduce 2 mol of NO₃⁻ is 8 F

\text{The amount of charge required to reduce 1 mol of NO$_{3}^{-}$ is \boxed{\textbf{4 F}}}

4 0
3 years ago
Read 2 more answers
Consider the balanced equation below. 4NH3 + 3O2 --> 2N2 + 6H2O What is the mole ratio of NH3 to N2?
AURORKA [14]
The balanced equation given is:
4NH3 + 3O2 .....> 2N2 + 6H2O

From this equation, we can note that 4 moles of NH3 are required to produce 2 moles of N2.

Therefore, the mole ratio of NH3 to N2 is 4:2 which can be simplified into 2:1
4 0
3 years ago
Read 2 more answers
What is the reason carbon atoms are the most versatile building blocks of the molecules used by living organisms?
WITCHER [35]

Explanation:

Atomic number of carbon is 6. So, 4 valence electrons are present.

Therefore, it can form 4 covalent bonds with varying bond angles by sharing its valence electrons.

Catenation is also an important property of carbon. Catenation is bonding with atoms of same element. Carbon skeleton can be formed in any direction and can vary in length, branching, and ring structure.

Elements required for making most of the molecules in living organisms are:

C, H, N, O, P and S

Carbon easily form covalents with other 5 elements.

These properties make carbon most versatile building blocks of the molecules used by living organisms.

4 0
3 years ago
In a genotype what does the lower case letter represent
AlladinOne [14]
The lower case letter represents the recessive allele.
6 0
3 years ago
Read 2 more answers
When the gases dihydrogen sulfide and oxygen react, they form the gases sulfur dioxide and water vapor. (How would this be writt
strojnjashka [21]
<span>When the gases dihydrogen sulfide and oxygen react, they form the gases sulfur dioxide and water vapor. so the balanced equation is
</span>2H2S(g) + 3O2(g) → 2SO2(g) + 2H2O(l)
hope it helps
7 0
3 years ago
Read 2 more answers
Other questions:
  • ¿Cuántos moles de C3H8 contienen 9.25 x 10^24 moléculas?
    15·1 answer
  • What is a potential problem with respect to the timing for when a cytotoxic?
    11·1 answer
  • When bonded with four hydrogen atoms, carbon has which shape?
    10·1 answer
  • Which best describes matter?
    14·1 answer
  • Which acid could not be prepared by treating a Grignard reagent with CO2?
    5·1 answer
  • Which statement regarding liquids is true? 1.can be converted to solids by adding energy in the form of heat 2.occupy a definite
    8·1 answer
  • PLEASE HELP ASAP!! {40 POINTS}
    12·1 answer
  • Which block do you think will slide down the ramp most quickly?
    14·2 answers
  • I NEED HELP PLS HELP!
    12·1 answer
  • What is the number of moles in 10.62 L of H2S gas at STP?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!