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
ivanzaharov [21]
2 years ago
10

Convert 7.50 mol of Li₂O to grams

Chemistry
1 answer:
Natali5045456 [20]2 years ago
4 0

Answer:

223.5 g

Explanation:

The formula between the number of moles, mass and Mr can be used to convert moles to grams.

<em>Number of moles = mass ÷ Mr</em>

So, mass = number of moles × Mr

  Mr of Li₂O = (6.9 × 2) + 16 = 29.8

∴ Mass = 7.5 × 29.8 = <u>223.5 g</u>

You might be interested in
Physical Science pre-Test 2020-2021
poizon [28]

Answer:

exothermic I think

Explanation:

IM TWKIGN THE TEST

4 0
3 years ago
During which step in the Can Crush Lab did water vapor force air from the can?
irina [24]
When you heated the can with the bit of water inside and you boiled it over a flame, the water turned to vapor (gas) and the pressure in the inside of the can is different from the pressure on the outside of the can. When you placed the can into a ice water beaker or a container, the can shrunk it's size, decreasing it's mass and density. The can shrunk as a result of the inside pressure being equalized with the outside pressure.
The part where you placed it in the ice bath or container was when the water vapor was forced out of the can.
3 0
3 years ago
If 585.24 Joules of heat are added to 53.2 grams of water at 24.15oC, what will the new temp. be?
spayn [35]
E = mct
Energy = (mass) x (specific heat capacity of water) x (change in temp)

585.24 = 53.2 x 4.2 x (X-24.15)


585.24 divided by 53.2 divided by 4.2 = X - 24.15

2.62 = X - 24.15

X= 26.77degrees C

(Specific heat capacity for water is 4.2 but is different for other liquids)
3 0
3 years ago
How many molecules of CO2 would 700g be?
podryga [215]

Answer:

13

Explanation:

6 0
2 years ago
Thiamine pyrophosphate (TPP) is a coenzyme derived from vitamin B1 that is used by the enzyme pyruvate dehydrogenase to convert
kow [346]

Answer:

See explaination

Explanation:

The second intermediate formed in the pyruvate dehydrogenase mechanism is as shown in the attached file.

4 0
3 years ago
Other questions:
  • Which of the following will dissociate into the largest number of ions in solution?
    8·1 answer
  • 20 POINTS 2 QUESTIONS CAN YOU ANSWER THEM ???
    7·2 answers
  • What combines to form bonds in compounds? A. atoms of elements B. molecules C. types of minerals D. valences
    10·1 answer
  • Consider the Gibbs energies at 25 ∘ C. Substance Δ G ∘ f ( kJ â‹… mol − 1 ) Ag + ( aq ) 77.1 Cl − ( aq ) − 131.2 AgCl
    15·1 answer
  • The molar mass of a solid carboxylic acid is determined by titrating a known mass of the acid with a standardized solution of Na
    8·1 answer
  • HELP!! Please (: I can’t figure out the answers
    7·1 answer
  • Pls help! I'll give u 10 points and the brainlest answer!!!​
    12·2 answers
  • Besides filament-based detectors, what else are sometimes used to find flammable liquids?
    5·1 answer
  • Water and carbon dioxide are both made of 3 atoms<br> True or false
    6·1 answer
  • When energy is transformed, some is wasted. What is a common form of wasted energy in some energy transformations? (Think about
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!