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
tester [92]
2 years ago
9

AL2(SO4)2.XH2O has 8.1% aluminium by mass.The value of X ?

Chemistry
1 answer:
In-s [12.5K]2 years ago
5 0

Answer:

jgutxutututrxxtdr

Explanation:

cjycitxutxtucj

You might be interested in
Why is it so difficult to experience the northern lights here in michigan? I need to know noww
Anni [7]

Answer:

Think about where you're located on the globe. That'll tell you your answer

Explanation:

7 0
3 years ago
Which statement accurately describes the molecule Br2?
Zinaida [17]

there are no choices of statements

6 0
3 years ago
Why is it important for a scientist studying greenhouse effect to know about mater,forces and energy
vova2212 [387]
<span>In the 19th century, scientists realized that gases in the atmosphere cause a "greenhouse effect" which affects the planet's temperature. These scientists were interested chiefly in the possibility that a lower level of carbon dioxide gas might explain the ice ages of the distant past. At the turn of the century, Svante Arrhenius calculated that emissions from human industry might someday bring a global warming. Other scientists dismissed his idea as faulty. In 1938, G.S. Callendar argued that the level of carbon dioxide was climbing and raising global temperature, but most scientists found his arguments implausible. It was almost by chance that a few researchers in the 1950s discovered that global warming truly was possible. In the early 1960s, C.D. Keeling measured the level of carbon dioxide in the atmosphere: it was rising fast. Researchers began to take an interest, struggling to understand how the level of carbon dioxide had changed in the past, and how the level was influenced by chemical and biological forces. They found that the gas plays a crucial role in climate change, so that the rising level could gravely affect our future. (This essay covers only developments relating directly to carbon dioxide, with a separate essay for Other Greenhouse Gases. Theories are discussed in the essay on Simple Models of Climate.)</span>
8 0
3 years ago
When an electron in a quantum system drops from a higher energy level to a lower one, the system __
icang [17]

When an electron in a quantum system drops from a higher energy level to a lower one, the system<u> emit a photon.</u>

<u />

The energy of the electron drops when it transitions levels, as well as the atom releases photons. The emission of the photon occurs as the electron transitions from an energy state to a lower state. The photon energy represents precisely the energy that would be lost when an electron moves to a level with less energy.

When such an excited electron transitions from one energy level to another, this could emit a photon. The energy drop would be equivalent to the power of the photon that is released. In electron volts, the energy of an electron, as well as its associated photon (emitted or absorbed) has been stated.

Therefore, when an electron in a quantum system drops from a higher energy level to a lower one, the system<u> emit a photon.</u>

<u />

To know more about electron

brainly.com/question/1255220

#SPJ4

<u />

4 0
1 year ago
A solution of methanol and water has a mole fraction of water of 0.312 and a total vapor pressure of 21 torr at 39.9 degrees C.
Elan Coil [88]

Answer:

Explanation:

Given the details, we can say that

Pure methanol is a volatile solvent as the vapour pressure has a high value. This means that methanol - methanol intermolecular forces are weak in comparisson to water - water forces. When having about 30% of water in a methanol mixture, the mixture Pv decreased, showing that it is not a volatile mixture, so then there are strong intermolecular interactions between methanol - water, part of it due to the hydrogen bonds.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Martian periodic table
    9·1 answer
  • he decomposition of acetaldehyde, CH3CHO, was determined to be a second order reaction with a rate constant of 0.0771 M-1 s-1. I
    13·1 answer
  • I need help on this please
    8·1 answer
  • Which solution has the lowest pH? A. 1.0 M HNO2 B. 1.0 M CH3COOH C. 1.0 M HCOOH D. 1.0 M HNO3 E. 1.0 M HPO4–
    14·2 answers
  • If 16.00 g of O₂ reacts with 80.00 g NO, how many grams of NO₂ are produced? (enter only the value, round to whole number)
    10·1 answer
  • The colder parts of the surface of Pluto have a temperature of –382°F. What is this temperature in Celsius?
    5·1 answer
  • which type of bonding involves sharing valence electrons, but the valence electrons aren't confined to a specific region between
    11·1 answer
  • How many formula units of CaO are in 32.7 g of CaO?
    10·1 answer
  • What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?
    15·1 answer
  • Which is the correctly balanced equation for a reaction of aluminium sulfide and zinc?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!