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
Alexxx [7]
3 years ago
13

You add 9.9 g iron to 20.10 mL of water and observe that the volume of iron and water together is 21.36 mL . Calculate the densi

ty of iron.
Chemistry
1 answer:
Agata [3.3K]3 years ago
3 0

Answer:

ρ = 7.9 g/mL

Explanation:

The total volume (21.36 mL) is equal to the sum of the volume of iron and the volume of water.

V = V(water) + V(iron)

V(iron) = V - V(water)

V(iron) = 21.36 mL - 20.10 mL

V(iron) = 1.26 mL

9.9 grams of iron occupy a volume of 1.26 mL. The density (ρ) of iron is equal to its mass (m) divided by its volume (V).

ρ = m/V

ρ = 9.9 g / 1.26 mL

ρ = 7.9 g/mL

You might be interested in
Which of these common substances is a homogeneous mixture?
IgorC [24]

Answer:

whole milk ,table salt , maple syrup

3 0
3 years ago
Read 2 more answers
Explain the difference between a base and an alkali.
Nataly_w [17]

Answer:

a base is something that reacts with an acid to form water and salt , an alkai is any base that is soluble in water

5 0
2 years ago
How much energy does an X-ray with an 8 nm (8 x 10-9 m) wavelength have?
Vlada [557]

Answer: 2.48×10^-17 J

Explanation:

Given the following :

Wavelength = 8nm (8 x 10^-9 m)

Energy(e) of X-ray =?

Energy=[speed of light(c) × planck's constant (h)] ÷ wavelength

Speed of light = 3×10^8m/s

Planck's constant = 6.626×10^-34 Js

Wavelength = 8 x 10^-9 m

Energy = [(3×10^8) * (6.626×10^-34)] / 8 x 10^-9

Energy = [19.878×10^(8-34)] / 8 x 10^-9

Energy = 2.48475 × 10^(-26+9)

Energy = 2.48×10^-17 J

8 0
3 years ago
When an acid is added to a base, which if the following changes in pH might be observed?
Licemer1 [7]
Im just guessing, so i think is A
5 0
2 years ago
What structures are found in plant cells that are not what structures are found in plant cells that are not me found in animal c
Amanda [17]

Special Structures in Plant Cells. Most organelles are common to both animal and plant cells. However, plant cells also have features that animal cells do not have: a cell wall, a large central vacuole, and plastids such as chloroplasts.

3 0
3 years ago
Other questions:
  • How many moles of atoms are there in 27g of aluminium
    9·1 answer
  • What are the elements and number of atoms in the compound c6h12o6?
    5·1 answer
  • Round 10235.0 to four significant figuers
    14·1 answer
  • The chemical equation below shows the reaction of sodium (Na) and chlorine (Cl) to form sodium chloride (NaCl).
    9·1 answer
  • All of the following methods would increase the solubility of a solid solute, except for
    11·2 answers
  • To make a table of elements, dmitri
    9·1 answer
  • How does the numbers valence electrons in oxygen compare to the valence electrons in hydrogen?
    5·1 answer
  • A) 4<br><br> b) 9<br><br> c) 11<br><br> d) 15
    6·2 answers
  • In addition to DNA, what else is
    8·1 answer
  • The first excited state of Ca is reached by absorption of 422.7 nm light. Find the energy difference (kJ/mole) between the groun
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!