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
schepotkina [342]
3 years ago
7

How many moles of MgCl2 are there in 302 g of the compound?

Physics
2 answers:
VashaNatasha [74]3 years ago
8 0
MgCl2 molar mass is about 94g/mol so 302/94 is about 3.2. So the answer is 3.2 moles in 302 g.

Hope this helps:)
lisov135 [29]3 years ago
3 0

Answer:

‍♀️‍♀️‍♀️‍♀️sorrryyyyy

You might be interested in
A ball has a diameter of 3.77 cm and average density of 0.0839 g/cm3. What force is required to hold it completely submerged und
mestny [16]

Answer:

0.25 N

Explanation:

The density of the ball (\rho_b) = 0.0839 g/cm³ = 83.9 kg/m³

The density of water (\rho_w) = 1000 kg/m³

diameter = 3.77 cm = 0.0377 m

radius of ball = 0.0377/2 = 0.01885 m

The volume (V) = \frac{4}{3} \pi r^3=\frac{4}{3}*\pi*0.01885^3=2.8*10^{-5}\ m^3

Let us assume the acceleration due to gravity (g) = 9.8 m/s²

Hence:

The force is required to hold it completely submerged under water (F) is:

F=\rho_w Vg-\rho_b Vg=1000*(2.8*10^{-5})*9.81-83.9*(2.8*10^{-5})*9.81\\\\

F = 0.25 N

7 0
3 years ago
Difference between calorimeter and thermometer ?
Kaylis [27]
A calorimeter is can be used to measure the amount of heat released or involved in a chemical reaction. Whereas thermometer can only measures temperature or hotness of a substance. It cannot be used to measure the thermal rate or amount of heat energy of a reaction.
6 0
3 years ago
Read 2 more answers
Laser transmissions travel at a higher speed than the radio waves true or false
uranmaximum [27]
<span>False. Laser transmissions and radio waves are both forms of electromagnetic radiation. Both travel at approximately 3.00 x 10^8 meters per second. This is the case because wavelength and frequency are directly proportional to this value. Although laser light has a shorter wavelength than radio waves, it will travel at the same speed because the frequency will be greater.</span>
6 0
3 years ago
Which of the following speeds is greatest? (2.54 cm = 1.00 in.)
Mama L [17]

Answer:

Hi, There!

O 10 m/s

O 10 yd/s

------------------------------------------------------------------------------------------------------------------

Have a great day!

7 0
3 years ago
Why is gasoline so flammable
Karo-lina-s [1.5K]
Flammable and combustible liquids themselves do not burn. It is the mixture of their vapours and air that burns. Gasoline, with a flashpoint of -40°C (-40°F), is a flammable liquid. Even at temperatures as low as -40°C (-40°F), it gives off enough vapour to form a burnable mixture in air.




Hope this helps




I looked this up




Don't forget to rate and thanks me
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which BEST compares the motions of dots C and D?
    5·2 answers
  • What is the definition of balanced forces? i need help i cnt find the definition on dictionary.com
    15·1 answer
  • I NEED HELP ASAP 1.    Suppose a skydiver (mass = 75 kg) is falling toward the Earth.  When the skydiver is 100 m above the Eart
    7·1 answer
  • A glider of mass 0.240 kg is on a frictionless, horizontal track, attached to a horizontal spring of force constant 6.00 N/m. In
    14·1 answer
  • The clean water act___
    9·1 answer
  • Newton's second law of motion says that the mass of an object times its acceleration is equal to the net force on the object. Wh
    11·1 answer
  • The mass of all bicycles and riders indicated in the graph are equal. What indicates the order of their average velocity from gr
    12·2 answers
  • - A wooden crate that measures 2.0 m long and 0.40 m wide rests on
    9·1 answer
  • Why doesn't the moon turn black during a total lunar eclipse? Explain your answer​
    5·1 answer
  • You weigh 730 N.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!