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
(Only answer if you’re for certain) Which type of molecule is shown below?
polet [3.4K]

i believe B is the answer

4 0
3 years ago
Read 2 more answers
Select the correct answer.
GREYUIT [131]

Answer:HNO3 + NaOH → H2O + NaNO3

Explanation:

8 0
3 years ago
If one parent has sickle cell anemia and the other parent is a carrier, what is the possibility that their child will have sickl
earnstyle [38]
It’s a 50 50 chance unless one parent has a dominate gene
5 0
3 years ago
Imagine that Zapata was able to fly his machine far out into outer space. What do you predict would happen to Zapatas forward mo
scoray [572]

Answer:

B if they run out of fuel then they would probably keep going because there is nothing that would stop them other than like a planet or something.

Explanation:

5 0
2 years ago
Explain briefly how an infrared spectrometer works. Please help immediately!!! :(
artcher [175]
Infrared (IR) spectroscopy uses infrared radiation to excite the molecules of a compound and generates an infrared spectrum of the energy absorbed by a molecule as a function of the frequency or wavelength of light
3 0
3 years ago
Other questions:
  • What happens to the conductivity of water when an acid is dissolved in it for bases?
    6·1 answer
  • What is the correct way to write 1,550,000,000 in scientific notation
    8·1 answer
  • can someone please help me with these questions? predicting products and balancing the equations of single replacement​
    5·1 answer
  • Select the correct Answers.
    7·2 answers
  • A tire at 21°C has a pressure of 0.82 atm. Its temperature decreases to –3.5°C. If there is no volume change in the tire, what i
    12·2 answers
  • What does a gamma ray primarily consist of?
    6·1 answer
  • Which situation would encourage competition
    5·2 answers
  • What is the molarity of a nano3 solution if 25.0 ml of a 0.200 m nano3 solution is diluted?
    15·1 answer
  • Calculate the density of a block of water measuring 2 cm x 4 cm x 1 cm, with a mass of 5.4
    12·1 answer
  • Automobile antifreeze is a mixture that consists mostly of water and ethylene glycol (C2H4(OH)2). What is the volume percent the
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!