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
VikaD [51]
4 years ago
10

What volume (in milliliters) of oxygen gas is required to react with 4.03 g of Mg at STP?

Chemistry
2 answers:
laiz [17]4 years ago
7 0

Answer:

1860

Explanation:

you round 1857 and get 1860

BigorU [14]4 years ago
6 0
Mg reaction with O₂ gas will produce MgO so the equation will be
2Mg+O₂⇒2MgO. (You have to find the equation in order two figure out the number of moles of O₂ that will react with 1 mole of MgO).

The first step is to find the number of moles of Mg in 4.03g of Mg.  You can do this by dividing 4.03g Mg by its molar mass (which is 24.3g/mol) to get 0.1658mol Mg.  Then you have to find the number of moles of O₂ that will react with 0.1658mol Mg.  To do this you need to use the fact that 1mol O₂ will react with 2mol Mg (this reatio is from the chemical equation) so you have to multiply 0.1658mol Mg by (1mol O₂)/(2mol Mg) to get 0.0829mol O₂.  From here you would usually use PV=nRT and solve for V However, the question tells us that we are at STP, that means you can use the fact that 22.4L of gas is 1 mol of gas at STP.  Using that information we can find the volume of O₂ gas by mulitlying 0.0829mol O₂ by 22.4L/mol to get 1.857L which equals 1857mL.
therefore, 1857mL of O₂ gas will react with 4.03g of Mg.

I hope this helps. Let me know in the comments if anything is unclear.
You might be interested in
During the liquid-liquid extraction of your panacetin sample, the dissolve acetylsalicylic acid (aspirin) will be in which layer
Mila [183]
Panacetin is a mixture of three components: sucrose, aspirin and tylenol. To determine the arrangement of layers, you must research on the densities of the components. The densities of sucrose, aspirin, and tylenol are 1.59 g/mL, 1.4 g/mL and 1.26 g/mL. The more dense the component, the farther it sinks to the bottom. Thus, the topmost layer is tylenol, followed by aspirin, and the bottom layer is sucrose. <em>Therefore, aspirin is placed in the second layer.</em>
4 0
3 years ago
Read 2 more answers
True or false: Energy is always transferred from high kinetic energy (temperature) too low kinetic energy (low temperature)
Roman55 [17]

Answer:

true

Explanation:

Temperature is a measure of the average kinetic energy of the molecules, so energy would naturally be transferred from the molecules with more kinetic energy to the molecules with less kinetic energy

5 0
3 years ago
36g of an alloy of copper and zinc contains 45% copper. how much pure copper do you need to add in order to get a 60% copper all
iogann1982 [59]
First, you need to count copper mass in alloy.
Second, you have to make an equation an find x ( the copper mass must be added). The answer is: 13,5g pure copper

7 0
3 years ago
Liquids and gases are matter because they take up space and have
Aneli [31]
Volume. Gases and liquids are typically measured in milliliters (mL) or cubic centimeters (cm^3) - both of which are equivalent (1 mL = 1 cm^3).
8 0
3 years ago
Why do scientists use models? a. Models make some things easier to understand. b.Measurements can be made only on models. c. Mod
mina [271]
In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

So your answer would be

C) Models help scientists visualize things they can’t see.
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the heat of reaction H2 + 1/3N2 2/3NH3
    10·1 answer
  • Molten gallium reacts with arsenic to form the semiconductor, gallium arsenide, GaAs, used in light emitting diodes and solar ce
    15·1 answer
  • C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l), ΔH = –1.37 × 103 kJ For the combustion of ethyl alcohol as described in the above equati
    9·1 answer
  • Which of the following is not true of Mendel's experiment?
    5·1 answer
  • What is the difference between minerals and rocks?
    8·1 answer
  • explain the importance of water on the following a.) domestic use, b.) biological use, c.) industrial use​
    15·1 answer
  • What technology allowed scientists to collect new data on layers of the earth
    10·1 answer
  • It is important that the United States move with all deliberate speed to develop and get into usage alternative fuels that will
    8·1 answer
  • The process of sediment being deposited in a final resting place is called
    7·1 answer
  • What is the molarity of a solution of h3po4 if 10.2 ml is neutralized by 53.5 ml of 0.20m koh what is the molarity of a solution
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!