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
Thepotemich [5.8K]
3 years ago
6

Find the density of a block with a length of 8.0 cm, a width of 4.0 cm, a height 2.0 cm,

Chemistry
1 answer:
SpyIntel [72]3 years ago
4 0

Answer:

0.80 g cm^-3

Explanation:

\rho=\frac{mass}{volume} \\volume= l \times w \times h = 8.0 cm \times 4.0 cm \times 2.0 cm = 64 cm^3\\\rho = \frac{51 g}{64 cm^3} =

= 0.80 g cm^-3

You might be interested in
In which space on the Venn diagram would you write coniferous trees?
Ad libitum [116K]

Answer:

B

Explanation:

Conifers live in cooler regions

5 0
3 years ago
Read 2 more answers
Write the condensed formula from left to right, starting with (CH3)x where x is a number.
pochemuha

Complete question:

Write the condensed formula from left to right, starting with (CH3)x where x is a number.

See attached image for the structure formula of the compound

Answer:

(CH₃)₂CHC(CH₃)₃ named as 2,2,3-Trimethylbutane

Explanation:

If we number the longest chain of the carbon starting from the left, we will observe that there are four carbons in the straight chain as shown in the image.

Starting from first carbon from the left of the carbon chain, at carbon number number 2, there two alkyl group, that is two methyl (CH3 is two). Also at carbon number 3, there are three alkyl group, that is three methyl (CH3 is three).

The condensed formula will be written as;

(CH₃)₂CHC(CH₃)₃

This compound is named as 2,2,3-Trimethylbutane, an isomer of Heptane

3 0
3 years ago
Phenols do not exhibit the same pka values as other alcohols; they are generally more acidic. Using the knowledge that hydrogen
nevsk [136]

Answer:

Phenols do not exhibit the same pka values as other alcohols;

They are generally more acidic.

Using the knowledge that hydrogen acidity is directly related to the stability of the anion formed, explain why phenol is more acidic than cyclohexane.

Explanation:

According to Bromsted=Lowry acid-base theory,

an acid is a substance that can release H^{+} ions when dissolved in water.

So, acid is a proton donor.

If the conjugate base of an acid is more stable then, that acid is a strong acid.

In the case of phenol,

the phenoxide ion formed is stabilized by resonance.

C_6H_5OH -> C_6H_5O^- +H^+

The resonance in phenoxide ion is shown below:

Whereas in the case of cyclohexanol resonance is not possible.

So, cyclohexanol is a weak acid compared to phenol.

7 0
3 years ago
I don't understand any of these
77julia77 [94]
Ok well whats the questions
3 0
3 years ago
How many neutrons and electrons are in Oxygen⁻¹⁷ isotope?
Ivenika [448]

Answer:

Neutrons- 9 Electrons- 8

Explanation:

Protons equals electrons and since the atomic# of oxygen is 8, 8 is the proton and 8 will be the electrons a s well since it isn't an ion. You subtract 8 from the 17 to get 9 as the neutron.

7 0
3 years ago
Other questions:
  • In the reaction Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq), how many moles of hydrogen gas will be produced from 75.0 milliliters of
    9·2 answers
  • How many atoms are there in 1.75 moles of CHCl3
    5·1 answer
  • On a warm summer day in Helsinki, the temperature is 20°C and the relative humidity is 40%. What is the absolute humidity? Numbe
    14·1 answer
  • A(n) ________ is an assemblage of minerals bound together, a mass composed of a single mineral, a mass of undifferentiated mater
    9·1 answer
  • How do you convert 4.0 m to cm ?
    7·2 answers
  • plz answer fast Which is not a crystalline allotrope of carbon? Select one: a. soot b. diamond c. graphite
    11·1 answer
  • Ammonium phosphate NH43PO4 is an important ingredient in many solid fertilizers. It can be made by reacting aqueous phosphoric a
    11·1 answer
  • 320 grams of brass released 5000 J of heat. If it has an initial temperature of 50°C, what is its temperature after releasing th
    8·1 answer
  • I need help. Will mark Brainlist.
    8·1 answer
  • Newton law of motion<br>​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!