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
dimulka [17.4K]
3 years ago
13

A wooden block has a mass of 562 g and a volume of 72 cm3. What is the density rounded to the nearest tenth!

Chemistry
2 answers:
Doss [256]3 years ago
8 0

Answer:

<h3>The answer is 7.81 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question we have

density =  \frac{562}{72}  \\  = 7.80555555...

We have the final answer as

<h3>7.81 g/cm³</h3>

Hope this helps you

Mila [183]3 years ago
5 0

Answer:

r

Explanation:

You might be interested in
Suppose you have an Avogadro's number of nitrogen atoms. How many grams does this represent? Enter your answer to one decimal pl
shusha [124]

Answer:

2.3 x 10-23 g.

Explanation:

The mass of a single atom is the mass number, 14, is the mass in grams of one mole of carbon.

One mole of Nitrogen atom is 6.022 x 1023 atoms (Avogadro's number). This can then used to convert a nitogen atom to grams by the ratio:

mass of 1 atom / 1 atom = mass of a mole of atoms / 6.022 x 10^23 atoms.

mass of 1 atom = mass of a mole of atoms / 6.022 x 1023

mass of 1 N atom = 14 / 6.022 x 10^23 N atoms

mass of 1 N atom = 2.325 x 10^-23 g

The mass of a single Nitrogen atom is 2.325 x 10-23 g.

3 0
3 years ago
What is the ratio of ions of aluminium fluoride component i.e. Aluminium ions to fluorine ions
Ad libitum [116K]

Answer:

Al:F3​:: 3:19.

Explanation:

8 0
2 years ago
a sample of unknown material weighs 500 n in air and 200 n when immesersed in alcholol with a specfic gravity of 0.7 what is the
svet-max [94.6K]

Answer: The mass density is 1166.36 kg/m^{3}.

Explanation:

Given: Weight of sample in air (F_{air}) = 500 N

Weight of sample in alcohol (F_{alc}) = 200 N

Specific gravity = 0.7 = 0.7 \times 1000 = 700 kg/m^{3}

Formula used to calculate Buoyant force is as follows.

F_{B} = F_{air} - F_{alc}\\= 500 - 200 \\= 300 N

Hence, volume of the material is calculated as follows.

V = \frac{F_{B}}{\rho \times g}

where,

F_{B} = Buoyant force

\rho = specific gravity

g = acceleration due to gravity = 9.81

Substitute the values into above formula.

V = \frac{F_{B}}{\rho \times g}\\= \frac{300}{700 \times 9.81}\\= \frac{300}{6867}\\= 0.0437 m^{3}

Now, mass of the material is calculated as follows.

mass = \frac{F_{air}}{g}\\= \frac{500 N}{9.81}\\= 50.97 kg

Therefore, density of the material or mass density is as follows.

Density = \frac{mass}{volume}\\= \frac{50.97 kg}{0.0437 m^{3}}\\= 1166.36 kg/m^{3}

Thus, we can conclude that the mass density is 1166.36 kg/m^{3}.

7 0
2 years ago
Which statement is true about the gravity?
REY [17]

Answer:

B.

Explanation:

Gravity acts on all masses equally, even though the effects on both masses.

Hope it helps you! ^^



8 0
3 years ago
One way that scientists ensure that data are reliable is through
Vesna [10]
Replicating experiments

(If u don’t mind can y mark me brainiest it would really help :) )
4 0
3 years ago
Other questions:
  • Which particle changes the mass of the isotope the most? which particle changes the mass of the isotope the most? electron captu
    13·2 answers
  • Listed below are possible solutes. In your possession is a beaker with 500 milliliters of water. You want to make an aqueous sol
    14·2 answers
  • Calculate kb the base dissociation constant for [c2h3o2-], acetate anion, for each of your trials from the concentrations of spe
    10·1 answer
  • When studying pea plants, Gregor Mendel made many interesting discoveries and came to a few conclusions about what happens as a
    9·1 answer
  • How is energy transformed from one form to another? Give three examples of objects that have potential energy and kinetic energy
    8·1 answer
  • Radioactive cobalt-60 is frequently used in treating cancer. It took 24 years for a 10 gram sample to decay to 0.625 grams. What
    11·1 answer
  • A nitrogen atom in N2 should have a
    7·1 answer
  • Which of the following increases as you move up a column of the periodic table?
    13·1 answer
  • Demócrito, Dalton, Thompson, Rutherford y Bohr aportaciones y postulados de los científicos de la composición y estructura del á
    9·1 answer
  • Yeast converts glucose to ethanol and carbon dioxide during a process known as anaerobic fermentation. The chemical reaction is
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!