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
Ne4ueva [31]
3 years ago
15

How many grams of Mg are needed to produce 224 g of MgO in the complete reaction of Mg

Chemistry
1 answer:
zmey [24]3 years ago
7 0

Answer:

134.4 g of Mg

Explanation:

reaction:

2Mg + O2 ➡️ 2MgO

1) find the mol of MgO

mol = mass / molar mass

mass = 224 g

molar mass = 24+16 = 40

mol = 224 / 40

= 5.6 moles

2 mol = 5.6 moles

2) find the mass of Mg

mass = mol × molar mass

mol = 5.6

molar mass = 24

mass = 5.6 × 24

= 134.4 g

You might be interested in
Which chemical has the least solubility at 80 c
Vinil7 [7]

Answer:

But since the solubility product constant for each compound is provided, their relative solubility can be ranked from highest to lowest. Depending on the ranking above, it is evident that aluminum hydroxide Al(OH)3 A l ( O H ) 3 has the lowest solubility at 25 Celsius degreesAs temperature increases, its solubility increases as well. Notice, however, that it does not increase significantly. In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C

6 0
2 years ago
PLZZZZZ I WILL MARK BRAINLEST
kenny6666 [7]

Answer:

hold on...

Explanation:

5 0
3 years ago
Sediment layers stop lateral spreading when:
GREYUIT [131]
Sediment layers stop lateral spreading when they encounter a barrier and they run out of additional sedimentary material. Lateral spreading is the lateral movement of gently to steeply sloping, saturated soil deposits caused by earthquake-induced liquefaction. Hope this answers the question.
3 0
4 years ago
Read 2 more answers
How do oceanographers define salinity?
Studentka2010 [4]

The oceanographers define salinity by the number of grams of salt per kilogram of water.  

Salinity is illustrated as how much salt is present in the given amount of water. It is dependent upon how much salt is found in the ocean in the specific regions. If there is a sunny environment, it may evaporate an ample amount of water, and leave behind a lot of salt, thus, the water has more salinity.  

The salinity of the ocean is usually measured in Practical Salinity Unit (PSU), it is a unit based on the characteristics of seawater conductivity.  

3 0
3 years ago
Read 2 more answers
Objects that are able to fall have what type of energy?
ASHA 777 [7]

Answer:

kinetic energy

Explanation:

because of the movement of gravity and space

4 0
3 years ago
Other questions:
  • Many popular beverages are sold in two-kilo bottles. true or false
    13·1 answer
  • HELP ASAP PLEASE!!!
    5·1 answer
  • What do the subscripts in the formula for ethane represent?
    12·1 answer
  • A chemical change involves a change in ________. A chemical change involves a change in ________. phase the elements of a molecu
    10·1 answer
  • 17) The elements sodium, magnesium,and silicon
    8·2 answers
  • A chemist adds 255.0mL of a 1.27M sodium carbonate Na2CO3 solution to a reaction flask. Calculate the mass in grams of sodium ca
    13·1 answer
  • An atom has three shells with 3 electrons in the last shell. This atom could be.....
    12·1 answer
  • Please help me find what type of chemical reaction takes place from numbers 1-5.
    12·2 answers
  • If we combine the reaction of an acid protonating water and the reaction of its conjugate base deprotonating water, the net reac
    10·1 answer
  • A dark purple liquid is diluted by adding water.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!