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
ioda
3 years ago
12

Find the number of moles that are in 2.23 g of Li 2 O and report it with the correct significant figures.

Chemistry
1 answer:
Lesechka [4]3 years ago
8 0
Not sure about the number of significant figures; you can decide where to round, but I would probably say 0.075mol.

You might be interested in
Why are the temperatures on other objects in the solar system more extreme than the temperatures on the Earth?
musickatia [10]
Hello there!

It is just based on the fact that they are closer or further away from the Sun.

Hope This Helps You!
Good Luck :) 
7 0
3 years ago
Can someone label these?
STatiana [176]
1. Igneous roc
2. Weathering & erosion
3. Sediments
4. Sedimentary rock
5. Melting
6. Heat & pressure

Hope this is helpful
8 0
2 years ago
1. Why is carbon dioxide a gas at low temperatures at mars
wlad13 [49]

1. carbon dioxide is a gas at low temperatures at mars because in the oxidizing environment organic compounds are oxidized to form carbon dioxide.

2. The 1 electron in outermost shell of Na is shared with 7 electrons of outermost shell of chlorine giving neutral charge on compound.

3. Electrostatic force of attraction is between the metal and non-metal.

4. When metal and non metal exchange electrons to form a neutral or no charge compound it is said to have form ionic bonds.

Explanation:

1. Temperature at Mars is very low -80 Fahrenheit  (-60 degrees) because water is not present in the planet. Carbon dioxide is abundant in Mars. The atmosphere is oxidizing at Mars which oxidizes the organic compounds and forms carbon dioxide.

2. NaCl combines by sharing of electrons forming ionic bonding. Different atoms of the different element share electrons to form ionic bonds. Such bond is formed when electrons is transferred between the atoms. In the NaCl, Na has 1 electron (electropositive) in its outer shell and chlorine has 7 electrons (electronegative). Both share the electrons getting their octet complete and a neutral charge on the compound formed.

3. Electrostatic force of attraction is between the metal and non-metal when bond is formed. The ionic bonds is formed between metal and non metals when electron exchange takes place. The electrostatic force is the attraction between two opposite charges on the ion.

4. When a metal and non metal exchange electrons in which metal is electropositive and non metal is electronegative the bonds form is called ionic bond. The electron is transferred from metal to non metal and thus giving neutral charge on the compound i.e. the outer shell has its octet complete.

6 0
3 years ago
HELPPPPP ME <br><br>PLISSSSS ​
Talja [164]

Answer:

pH value of a solution depends on the concentration of hydrogen ions

(pH = -log[H+(aq)].

Hydrochloric acid is a strong acid, while ethanoic acid is a weak acid. Strong acids ionize completely in water (to give ions which includes H+(aq)), while weak acids only ionize partially in water.  

Therefore, even if both hydrochloric acid and ethanoic acid are monobasic acids (each molecule can ionize completely to give 1 hydrogen ion), since hydrochloric acid ionizes completely in water and ethanoic acid does not ionize completely, the concentration of hydrogen ions in hydrochloric acid is higher than that of ethanoic acid, leading to a lower pH value for hydrochloric acid, while higher for ethanoic acid.

8 0
3 years ago
What is the Celsius temperature of 1 mole of a gas that has an average kinetic energy of 4,290 joules?
timofeeve [1]
Well the the answer is 70.8c but if you round it up it is 71c which I choice and got it correct so the answer is 71c

5 0
3 years ago
Other questions:
  • Tempature really is a measure of the ?? or the particles in any material
    6·1 answer
  • What is peroxide (H2O2) oxidized to during redox reactions?
    9·1 answer
  • What is a substance that has mass and volume
    14·2 answers
  • A student makes a ball-and-stick model of a propane molecule, as shown below. The black balls represent carbon atoms, and the wh
    10·1 answer
  • Nitrogen and carbon can form ___ bonds in which six electrons ( three pairs ) are shared.
    9·1 answer
  • Question
    14·2 answers
  • The molecule H2O can be correctly described as a?
    6·1 answer
  • Mount Rushmore national memory in South Dakota was carved out of grantie that formed from cooled magma what type of rock matches
    14·1 answer
  • if 8.15 ml of water is placed in a graduated cylinder the mass of the cylinder = 56.98g and the combined mass of both the cylind
    14·1 answer
  • How many taste buds are present on the tongue? Name them. ​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!