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
seropon [69]
3 years ago
12

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.4 grams of calcium metal? Show all of th

e work used to solve this problem. 2Ca + O2 yields 2CaO
Chemistry
1 answer:
Margaret [11]3 years ago
5 0
Answer: 19.8 l


Explanation:

1) Chemical equation:

2Ca + O₂ → 2CaO


2) Mole ratios: 2 mol Ca : 1 mol O₂ : 2 mol CaO

3) Convert 35.4 g of Ca to moles:

n = mass in grams / molar mass = 35.4 g / 40.1 g/mol = 0.883 mol

4) Volume proportion: 1 mol of gas at STP = 22.4 l


1 mol at STP              0.883 mol at STP

--------------------- = ------------------------------

22.4 l                                      x

⇒ x = 0.883 mol × 22.4 l / 1 mol = 19.8 l ← answer
You might be interested in
How many molecules are in 88g of carbon dioxide?
Volgvan
No of moles= 88/44 =2
therefore no. of molecules =

therefore no.of molecules= 12.046*10^23
8 0
3 years ago
Read 2 more answers
Please help this test ends in 30 min
RideAnS [48]

Answer:

Option C

CH₃CH₂CH₂COOH

Explanation:

Carbonxylic acids are compounds which has the general formula

R–COOH where R is an alkyl group.

Considering the options given in the question above,

For A:

CH₃CH₂OCH₂CH₃ is an ether compound with general formula ROR' where R and R' are both alkyl group.

For B:

CH₃CH₂CH₂CH₂OH is an alcohol with general formula ROH where R is an alkyl group.

For C:

CH₃CH₂CH₂COOH is a carbonxylic acid with general formula R–COOH where R is an alkyl group.

For D:

CH₃CH₂C=OCH₂CH₃ is a ketone compound with general formula RC=OR' where R and R' are both alkyl group

For E:

ClCH₂CH₂CH₂CH₂CH₂CH₂Br is simply an Alkyl halide with general formula XRX where X is an halogen (i.e F, Cl, Br or I) and R is an alkyl group.

From the above illustration, only option C contains a Carbonxylic compound.

8 0
3 years ago
I need help please and thank you
Alenkasestr [34]

Answer:

ooooooooooooooooooh i dont know this one

Explanation:

im not good a math at all

4 0
3 years ago
Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the suga
iren2701 [21]

Maple syrup is a solution, all of the chemicals in maple syrup are dissolved in water.

8 0
3 years ago
Which of the following substances dissolves most readily in water?
FrozenT [24]
The answer to you’re question is C. NH3
8 0
2 years ago
Other questions:
  • There is nothing that you can do to conserve energy. True or False
    12·2 answers
  • An internal combustion engine relies primarily on the efficient production of energy by the combination of oxygen (02) and gasol
    6·1 answer
  • When objects like a horseshoe are left outside over time, the iron in them will react with oxygen to produce rust. Is this a che
    14·1 answer
  • What is the frequency of green light that has a wavelength of 5.14 x 10^-7m?
    8·1 answer
  • Diabetes mellitus is characterized by too much glucose buildup in the blood. In _________________ diabetes, this is because the
    13·1 answer
  • Can someone help me with thins, im to lazy to read rn i did freaking 47 over due homeworkkkk
    14·1 answer
  • A 40.04 g sample of a protein contains 17.16 g of carbon, 3.17 g of hydrogen, 13.71 g of oxygen, and the rest being nitrogen. Th
    8·1 answer
  • What is the mass of 2.2 moles of magnesium chloride? With work shown
    14·2 answers
  • Is there a relationship between the locations of earthquake, volcanoes, and plate boundaries? If so, describe the relationship.
    12·1 answer
  • Body systems often interact with each other. The image below shows parts of body systems that interact to fulfill a function for
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!