Answer:
Mass = 58.96 g
Explanation:
Given data:
Mass of CH₄ = 21.5 g
Mass of O₂ = 387.5 g
Mass of CO₂ formed = ?
Solution:
Chemical equation:
CH₄ + 2O₂ → CO₂ + 2H₂O
Number of moles of CH₄:
Number of moles = mass / molar mass
Number of moles = 21.5 g/ 16 g/mol
Number of moles = 1.34 mol
Number of moles of O₂ :
Number of moles = mass / molar mass
Number of moles = 387.5 g/ 32 g/mol
Number of moles = 12.1 mol
now we will compare the moles of CO₂ with O₂ and CH₄.
O₂ : CO₂
2 : 1
12.1 : 1/2×12.1 = 6.05 mol
CH₄ : CO₂
1 : 1
1.34 : 1.34
Number of moles of CO₂ produced by CH₄ are less thus it will limiting reactant.
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 1.34 mol × 44 g/mol
Mass = 58.96 g
How many molecules are in a 189 g sample of carbon tetrabromide, CBr4?
1. This part of the body works to remove
poisons and germs from the blood, and can be damaged by long-term alcohol
abuse (5)
(5 Points)
Liver
Brian
Heart
Lungs
Answer:
Liver
Explanation:
Explanation:
the answer is Liver is the part of the body works to remove
poisons and germs from the blood, and can be damaged by long-term alcohol
abuse
Which of the following is an example of a physical change?(1 point)
dissolving sugar in water
burning a match
boiling an egg
cooking a hamburger
Based on the nature of physical change, dissolving sugar in water is a physical change .
What is a physical change?A physical change is a change which does not produce new substances and which can be easily reversed.
Physical changes do not alter the chemical composition of a substance.
Examples of physical changes include:
Melting of candle waxdissolving sugar in waterfreezing of waterTherefore, dissolving sugar in water is a physical change.
Learn more about physical change at: https://brainly.com/question/960225
Answer: a
Explanation:
What is the density of a material if its mass is 32 grams and its volume is 8 milliliters
Answer:
4 kilograms/liters
Explanation:
anyone may I get help please
Answer:
-pneumonoultramicroscopicsilicovolcanoconiosis.ogg
umu’s class was given an assignment to feature a scientist that contributed to the development of the cell theory. The class decided to use images to feature the scientist of their choice.
Which image would Tumu most likely use in his assignment to feature Rudolf Virchow?
need help
Answer:
Option - D
Explanation:
This is the question i got right on the quiz, hope this helps!The answer to your question is D or the way root cells reproduce to increase root length.
Back in 1855, Virchow has confirmed that cells must come from other pre-existing cells. If cells are damaged or destroyed, new cells will reproduce.
When a reaction occurs between atoms with ground state electron configurations 1s 2s' and 1s 2s 2p%, the predominant type of bond formed is:
Why does a tree cast a shadow during the daytime? A. The tree is a source of light for the Earth. B. The tree creates sunlight. C. The tree blocks light from the Sun. D The tree pulls the light off of the ground.
7.The equation below shows a process that occurs in all green plants.
carbon dioxide + water + energy → glucose + oxygen
Which statement about this process is true and supported by the equation?
Ⓐ The process does not follow the law of conservation of mass
Ⓑ The process is called cellular respiration
Ⓒ The process does follow the law of conservation of mass and energy is not in the product
Ⓓ The process follows the law of conservation of mass and energy is found in the product
Answer:
Ⓓ The process follows the law of conservation of mass and energy is found in the product
Explanation:
This question depicts PHOTOSYNTHESIS, which is the process employed by green plants to manufacture their food in form of sugars (glucose). The general equation, which was given in the question is as follows:
6CO2 + 6H2O + energy → C6H12O6 + 6O2
This chemical reaction follows the LAW OF CONSERVATION OF MASS, which states that the amount of matter in reactant must equate that of the product. In this case, each element contains the same number of atoms in both reactant side and product side.
Also, energy is contained in the product but stored in the chemical bonds of the glucose molecule formed.
a steam engine only converts 20 percent of its input energy into useful work?
Answer:
A heat engine is a type of engine, (like the motor in a car) that produces ... Heat engines do just the opposite; they take the energy from being warm ... using a flame to heat water into steam, then using the steam to turn a turbine. ... is the percentage of energy input that the engine can convert to useful work.
Explanation:
hope this helps
and i hope its right
Which organ gives our body the sense to touch, protects it, and helps keep it at the right temperature?
will make brainlest
a.skin
b.heart
c.liver
d.spleen
Answer: Skin
Explanation: You're body has a temperature, and when it touches something, it transfers to you're skin.
Describe 2 physical changes that could occur with a piece of paper
Answer:
Physical=Ripping
Chemical=Burning
Explanation:
I may be wrong. But I would say these are the answers.
Answer:
ima just take all your points and roll out tbh peace
Explanation:
Why do metals tend become cations?
A)
they gain electrons to form a full outer shell
B)
they are most stable when their outside shell is half full
C)
they need to lose electrons in order to obtain a full outer shell
D)
metals do not become cations
Submit
Answer:
For metals it takes a lot less energy to loose 2 electrons then to gain 6. For nonmetals it is easier to gain 2 electrons then to loose 6.
Youre're welcome <3
how the different occupation h elp a society?
Answer:
Work and Occupations are a fundamental necessity in life. Society depends upon the production of food, machine, various utensils and articles of daily use, newsprint, etc. ... (ii) They Satisfy Man's Social and Psychological Needs Also: Work is not the same thing as physical effort or the expenditure of energy.
Explanation:
A closed system initially containing 1×10^-3 hydrogen 2×10^-3M iodine at 448 degree Celsius and is allowed to reach equilibrium. The concentration of the equilibrium shows concentration of hydrogen iodude as 1.87×10^-3M.Calculate kc at this temperature
Answer:
Kc = 50.5
Explanation:
We determine the reaction:
H₂ + I₂ ⇄ 2HI
Initially we have 0.001 molesof H₂
and 0.002 moles of I₂
If we have produced 0.00187 moles of HI in the equilibrium we have to know, how many moles of I₂ and H₂, have reacted.
H₂ + I₂ ⇄ 2HI
In: 0.001 0.002 -
R: x x 2x
Eq: 0.001-x 0.002-x 0.00187
x = 0.00187/2 = 9.35×10⁻⁴ moles that have reacted
So in the equilibrium we have:
0.001 - 9.35×10⁻⁴ = 6.5×10⁻⁵ moles of H₂
0.002 - 9.35×10⁻⁴ = 1.065×10⁻³ moles of I₂
Expression for Kc is = (HI)² / (H₂) . (I₂)
0.00187 ² / 6.5×10⁻⁵ . 1.065×10⁻³ = 50.5
Clear selection
An atom is composed of electrons, protons, and neutrons. What is the
electric charge of a neutron?
O points
+1
-1
It depends
Answer:
hbjvcbhjkcvbfhg
Explanation: