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
Wittaler [7]
3 years ago
9

Name two solid liquid and gaseous element at the normal temperature and normal pressure​

Chemistry
1 answer:
liubo4ka [24]3 years ago
7 0

Answer:

Solid: calcium and potassium

Liquid: mercury and bromine

Gaseous: oxygen and fluorine

Explanation:

Matter exists in three different states namely: solid, gaseous and liquid. Elements that are found in nature are classified as matter. Since, these elements are grouped as matter, they can either be found as either solids, liquids or gases at normal temperature and pressure.

At normal temperature (20°C or 293K) and pressure (1 atm), the following elements are found to exists in the respective state of matter:

Solid: Calcium (Ca) and potassium (K)

Liquid: Mercury (Hg) and bromine (Br)

Gaseous: Oxygen (O) and fluorine (F)

You might be interested in
The three-dimensional structure of macromolecules is formed and maintained primarily through noncovalent interactions. Which one
Nadusha1986 [10]

Answer:

Carbon-carbon bonds. (Ans.A).

Explanation:

None covalent bonds are different from covalent bonds, they are not formed by the sharing of electrons which is present between the bonded atoms. They are formed by the help of electrostatic attraction or some other type of interaction found between the ions or atoms.

A carbon-carbon bond is known as a covalent bond, and they are formed with the help of the sharing of electrons which is found between the two carbon atoms. Both carbon atoms have 4 electrons for bonding.

5 0
3 years ago
Joe bought a roll of gray duct tape containing 5400 inches. If there are 5280 feet in a mile, how
miss Akunina [59]

Answer:

STANDARD: 0.085 mi, 450 ft, or 150 yds

METRIC: 0.137 km, 137.16 m, or 13716 cm

Explanation:

4 0
3 years ago
CaCN2 + 3H20 - CaCO3 + 2NH3
ANTONII [103]

Answer:3

Explanation:

6 0
3 years ago
How Do Glow Sticks Glow?
Gekata [30.6K]

Answer:

All liquid glow products depend on a chemical process known as CHEMILUMINESCENCE to produce their light. Chemiluminesence is a chemical reaction that causes a release of energy in the form of light. To produce this light the electrons in the chemicals become excited and rise to a higher energy level.

To utilise this process glowsticks contain two liquids; hydrogen peroxide and tert-butyl alcohol. When mixed together it is these liquids that create the glow. Fluorescent dyes are also used in the alcohol to alter the colour of the light emitted.

Explanation:

8 0
3 years ago
Consider the balanced chemical equation for the combustion of methane (CH4).
Mrac [35]
<h3>Answer:</h3>

                  89.6 L of O₂

<h3>Solution:</h3>

The balanced chemical equation is as,

                                CH₄  +  2 O₂    →    CO₂  +  2 H₂O

As at STP, one mole of any gas (Ideal gas) occupies exactly 22.4 L of Volume. Therefore, According to equation,

             44 g ( 1 mol) CO₂ is produced by  =  44.8 L (2 mol) of O₂

So,

                  88 g CO₂ will be produced by  = X L of O₂

Solving for X,

                        X = (88 g × 44.8 L) ÷ 44 g

                        X = 89.6 L of O₂

5 0
3 years ago
Read 2 more answers
Other questions:
  • List 4 observations that suggest a chemical change is occurring
    14·2 answers
  • Cobalt-59 is a stable isotope and cobalt-60 is an unstable or radioactive isotope. These two isotopes differ in the number of -
    5·1 answer
  • "The occurrence of the all-or-none ________________ results from depolarization in response to rapid entry of ____________ ions
    8·2 answers
  • Which of the following is a major difference between lactic acid and alcohol fermentation?
    13·1 answer
  • How many base units exist?
    5·1 answer
  • The muscle in Lane's arm would best be described as -
    9·1 answer
  • Which is a base unit used in the metric system? quarts liters pints degrees Fahrenheit
    9·2 answers
  • What is the purpose of cell wall
    10·2 answers
  • Which example is a body fossil?
    11·1 answer
  • Wood is made up partly of cellulose, about 45% by weight. Cellulose is a long chain polysaccharide made up
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!