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
n200080 [17]
2 years ago
8

Magnesium combines with oxygen to form magnesium oxide. If 10.57 g of

Chemistry
1 answer:
Phantasy [73]2 years ago
7 0

The total mass is 10.57+6.96=17.53 g.

So, the percent by mass of magnesium is (10.57)/(17.53) * 100 = <u>60.3%</u>

<u />

The percent by mass of oxygen is (6.96)/(17.53) * 100 = <u>39.7%</u>

You might be interested in
A welding torch produces a flame by burning acetylene fuel in the presence of oxygen the energy released from the acetylene fuel
Volgvan
Answer : Chemical energy to thermal energy

Explanation : When the welding torch uses the acetylene fuel for producing flame it is using the chemical acetylene to generate energy in form of light, after the flame is produced the fuel is used for melting a metal which is utilizing the thermal energy. So the ultimate final product is generated from chemical to thermal and so the energy transformation is from chemical energy to thermal energy.
8 0
2 years ago
Read 2 more answers
Determine the volume of methane (ch 4 ) gas needed to react completely with 0.660 l of o 2 gas to form methanol (ch 3 oh).
Sloan [31]
Balance Chemical Equation for this reaction is,

                           2 CH₄  +  O₂   →   2CH₃OH

According to this eq, 22.4 L (1 moles) of Oxygen requires 44.8 L (2 mole) CH₄ for complete reaction.
So, the volume of CH₄ required to consume 0.66 L of O₂ is calculated as,

 22.4 L O₂ required to consume  =  44.8 L CH₄
0.660 L O₂ will require                =  X L of CH₄

Solving for X,
                                                X  =  (44.8 L × 0.660 L) ÷ 22.4 L

                                                X  =  1.320 L of CH₄

Result:
            1.320 L of CH
₄ <span>gas is needed to react completely with 0.660 L of O</span>₂<span> gas to form methanol (CH</span>₃OH<span>).</span>
4 0
2 years ago
IXL Science (PLS HELP)
frez [133]
There are 12 Hydrogens (H) and 12 Oxygens (O) and 6 molecules of Hydrogen Peroxide (H2O2) reacted
6 0
3 years ago
An object has a mass of 4 grams and a volume of 2 cm^3.what is the density of the object?
stellarik [79]

Answer:

2.0 grams per cubic centimeter

Explanation:

(You can refer to the DMV triangle to help you solve this!)

Density = Mass/Volume

Density = 4.0g/2.0cm3

Density = 2.0g/cm3

Hope this helps!!!

-Unicorns110504

*Please mark brainliest*

3 0
3 years ago
Read 2 more answers
Write a reaction to describe the behavior of the following substances in water. please include all phases.
lorasvet [3.4K]

3NF3 + 5H2O → HNO3 + 2NO + 9HF

Nitrogen fluoride reacts with water to produce nitric acid, nitric oxide, and hydrogen fluoride. The reaction slowly takes place in a boiling solution.

CH2CH2 + H2O → CH3CH2OH

Ethylene is a hydrocarbon with water that creates ethanol and ethanol is an alcohol

4 0
3 years ago
Other questions:
  • Why is it important to avoid consuming sugar?
    12·1 answer
  • Brainiest if answered in the next 5m.
    10·1 answer
  • Lab question: When a student chemist transferred the metal to the calorimeter, some water splashed out of the calorimeter. Will
    5·1 answer
  • The compound CCl4 is nonflammable and was once commonly used in fire extinguishers. On the basis of the periodic properties, whi
    11·1 answer
  • Identify the structure of a minor product formed from the radical chlorination of propane, which has molecular formula C3H6Cl2 a
    15·1 answer
  • 32 POINTS!!!!
    8·2 answers
  • What is the combined gas law?
    11·1 answer
  • In the following reaction, in which direction, left or right, will the equilibrium shift if the following changes are made?
    13·1 answer
  • List 5 kinds of animals with backbone (Describe each of them)
    7·1 answer
  • What data would be most helpful to support the claim that the population of a certain plant is dependent on the rainfall in its
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!