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
blsea [12.9K]
3 years ago
5

g cr2o3 molar mass compound containing chromium and silicon contains 73.52 mass percent chromium. Determine its empirical formul

a.
Chemistry
1 answer:
gavmur [86]3 years ago
4 0
Ggggggggggggggggggggg
You might be interested in
(chem) which is more concentrated: 45.0 grams of HCOOH dissolved in 189 mL of water or 1.5 moles of CH↓2COOH dissolved in twice
Liula [17]

Answer:

CH3COOH would be more concentrated

Explanation:

The higher the concentration value, the more concentrated it is.

The relationship between concentration, moles and volume is given by the equation;

Concentration = No of moles / Volume

5.0 grams of HCOOH dissolved in 189 mL of water

Number of moles = Mass / Molar mass = 5 / 46.03 = 0.1086 mol

Concentration = 0.1086 / 0.189 = 0.5746 mol/L

1.5 moles of CH3COOH dissolved in twice as much water

Volume = 2 * 189 = 378 ml = 0.378 L

Concentration = 1.5 / 0.378 = 3.9683 mol/L

Comparing both concentration values;

CH3COOH would be more concentrated

6 0
3 years ago
The leading cause for dementia is Alzheimer's disease. <br> True<br> False
Amiraneli [1.4K]
True.

Dementia's main cause is Alzheimer's disease (50%-70% of cases). You can find it in the DSM-5 as Major Neurocognitive Disorder due to Alzheimer's Disease.
7 0
4 years ago
If a solid has a density of 4g/cm^3 what volume of the solid has a mass of 24g? show work
ki77a [65]

Answer:

0.167cm^3

Explanation:

density=mass/volume

6 0
4 years ago
What is the area of a medium triangle?​
galben [10]

Answer: Area of a Triangle Equals Base x Height / 3

Explanation: Hope this works

6 0
3 years ago
What is meant by saying that the latent heat of vaporization of water is 22. 5×10^5 j/kg.
andrey2020 [161]

It means that 22.5×10^5 J of heat is required to change 1 kg of water into steam.

Latent heat of vaporization is amount of energy required to change 1 gram (in this example 1 kilogram) of material from the liquid to the gaseous state at its boiling point.

Boiling point of the water is 100°C.

Joule (J) is the standard unit for energy (in this example heat).

Evaporization is phase change process in which the water changes from a liquid to a gas (water vapor). Fore example, solar radiation can be the source of energy for evaporation.

More about heat of vaporization: brainly.com/question/14679329

#SPJ4

5 0
1 year ago
Other questions:
  • Justine is a nursing assistant who is helping Felix into the sitting position on his bed. She has just pivoted Felix's legs over
    8·1 answer
  • a bottle of rubbing alcohol is labeled 70%(v/v) how many milliliters of isopropyl alcohol are in a 400ml bottle of this solution
    7·1 answer
  • A can of soda has a volume of 250 mL and a mass of 100 g? what is the density of the soda
    12·1 answer
  • How many molecules of carbon dioxide are dissolved in 0.550 L of water at 25 °C if the pressure of CO2 above the water is 0.250
    10·2 answers
  • The following equation shows the correct molecules formed in the reaction, but the products are incorrect. CH4 +202=H20+ CO2 How
    15·1 answer
  • Why is it true that particles in a rock lying on the group have kinetic energy and energy
    15·1 answer
  • Type the correct answer in the box. Spell all words correctly. In which system are both energy and matter exchanged with the sur
    7·1 answer
  • What is the volume of a sample of ammonia gas (NH3) if it contains 0.23 moles?​
    5·1 answer
  • Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas fo
    13·1 answer
  • _HNO3+ Fe+2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!