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
strojnjashka [21]
4 years ago
9

Is material that has a density of 0.2g/ml good for building a bridge or for making couch cushions

Chemistry
2 answers:
lisov135 [29]4 years ago
8 0
D = 0.2 g / ml = 0.2 g / cm³
For example, density of steel is 7.85 g / cm³.
Density of pure water is 1.0 g/cm³. An object which has a density < 1.0 g/cm³ will float in water.
Answer: Material that has a density of 0.2 g/ml ( 0.2 g/cm³ ) is good for making couch cushions. 
Ber [7]4 years ago
5 0

The density of an object refers to its mass per unit volume. The density of an object is determined by its mass, its size and arrangement of its atom. The mathematical formula for density is given by: Density = Mass / volume. The density of a substance is part of the determinant of what the substance can be used for. The density of an object depends on how tightly its molecules are packed. A substance with loosely packed molecules will have low density while a substance with tightly packed particles will have high density.

A material with 0.2g/ml density have low density, thus, such an object will not be suitable for holding large weight. Therefore it will be suitable for making couch cushion.

You might be interested in
Can you help me with this?
Nikitich [7]

Answer:

hi I'm sorry I can't I just need points

6 0
3 years ago
Select the following statements that are true. Select all that apply.
geniusboy [140]

Answer:

The statements which are true among these are: (a),(b) and (c) because,

(a) The simplest organic compounds which contains only carbon and hydrogen atoms are called hydrocarbons.

(b) The IUPAC naming of organic compounds have some rules for the naming of compounds, which consists of

  • Finding the longest chain present in the compound called parent chain.
  • A prefix for any substituent attach to the parent chain.

And lastly a suffix for the type of bond that molecule have.

(c) Isomers are the compound which same same molecular formula but different arrangement of molecules, due to this different arrangement they have different physical and chemical properties.

4 0
4 years ago
Explain how impurities are selected for doping in group 14 semiconductors
aleksklad [387]

Impurities selection for doping in group 14 semiconductors is: based on their ability to add more holes and fewer electrons or to add more electrons and reduce the holes.

<h3>Meaning of Semiconductors</h3>

Semiconductors can be defined as any material that has the ability to exhibit some properties of a conductor and some properties of an insulator.

A semiconductor can be used as either a conductor or an insulator when worked upon.

In conclusion, Impurities selection for doping in group 14 semiconductors is: based on their ability to add more holes and fewer electrons or to add more electrons and reduce the holes.

Learn more about semiconductors: brainly.com/question/1918629

#SPJ1

6 0
2 years ago
Describe an experiment to show that water contains hydrogen and oxygen only​
kondaur [170]

Answer:

Electrolysis

Explanation:

The electrolysis of water is one such experiment that shows that water is made up of hydrogen and oxygen atoms only in the ratio of 2 to 1.

In the electrolysis of water, electricity is passed through acidified water to cause it to decompose.

The electrolysis of water is also known as the electrolysis of dilute tetraoxosulphate  (VI) acid.

At the cathode, H⁺ ions are discharged and hydrogen gas is liberated:

               2H⁺       +     2e⁻     →        H₂

At the anode, both the sulfate ion and hydroxyl ions migrate to this electrode. Only the OH⁻ is selected for preferential discharge due to its lower position in that activity series.

         4OH⁻  →   2H₂O    +    O₂     +     4e⁻

Oxygen gas is produced at the anode.

This electrolysis demonstrates the volumetric composition of water that is, 2 volumes of hydrogen at the cathode and 1 volume of oxygen at the anode.

5 0
3 years ago
What type of substance contains more than one kind of element joined by chemical bonds?
Usimov [2.4K]

<span>The answer is compound.  Elements are composed of one kind of atoms bonded together. There are different types of compounds: ionic, complexes, molecular, and intermetallic compounds. The proportion of elements in the compound is expressed using a chemical formula. An example of an element is Aluminium while an example of a compound is H2S (Hydrogen sulfide).</span>






3 0
3 years ago
Other questions:
  • If 100. mL of 0.400 M Na2SO4 is added to 200. mL of 0.600 M NaCl, what is the concentration of Na+ ions in the final solution? A
    14·1 answer
  • Rutherford's Simulation showed that the positive protons are scattered all over the atom. True False
    6·1 answer
  • Particles of matter how have both potential and kinetic energy is that true or false?
    15·1 answer
  • Wharis the mass in grams of 2.000 mol of oxygen atoms?
    5·1 answer
  • Solid Iron (III) reacts with oxygen gas to form iron (III) oxide, which is the compound we see when rust is present. Based on th
    8·1 answer
  • What do the subscripts in the formula for ethane represent?
    12·1 answer
  • I’ve been up all night doin chemistry, can someone please give me the answers
    14·1 answer
  • The balanced equation for a hypothetical reaction is A + 5B + 6C → 3D + 3E. What is the rate law for this reaction?
    11·2 answers
  • Can some one tell me the best position in sex
    12·1 answer
  • A substance that flows is called a
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!