The molecular formula is ALWAYS, a whole number multiple of the empirical formula....and of course the multiple might be one...
And so we can write....
{empirical formula}n=molecular formula
And taking the given molecular mass of 70.13⋅g⋅mol−1
n=70.13⋅g⋅mol^−1/(12.011+1.00794×2)⋅g⋅mol−1=5
And so....
{CH2}×5=C5H10
The empirical formula of the compound is CH₂ . Then, the formula mass is 14 g. If the molar mass of the compound is 70.13 g the compound has the molecular formula of C₅H₁₀.
What is empirical formula ?The empirical formula of a compound is the formula derived from the number of moles of the constituent elements of the compound. The number of moles of the elements present can be calculated from their given masses and atomic mass.
The formula mass of a compound is the mass of the elements with their number of atoms as in the empirical formula.
given the empirical formula is CH₂.
atomic mass of C = 12 g/mol
atomic mass of H = 1 g/mol
then formula mass = 12 + 2 = 14 g.
Divide the molar mass by formula mass;
molar mass = 70.13 g
70.13 g/14 g = 5
Now, multiply the empirical formula by 5 to get the molecular formula.
ie. C₅H₁₀.
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Given the following equation:
8 Fe + S8 ---> 8 FeS
What mass of iron is needed to react with 106.0 grams of sulfur?
Answer27.9 gFeS
Explanation:
Note: This is for 16.0 Grams of Sulfer
Copper carbonate decomposes to make _____________ oxide and _____________ dioxide
Answer:
Copper carbonate decomposes to copper oxide and carbon dioxide.
Explanation:
CHEMISTRY HELP USING GAS LAWS
A 75.0 mL sample of sulfur dioxide gas exerts 200. mm Hg pressure at 30.0°C. What pressure in mmHg does it exert at 35.0°C if the volume expands to 80.0 mL?
Answer:
is there choices to choose from u can provide me?
PLEASE HELL QUICKLY I WILL MARK BRAINLIEST
Answer: b is the answer
If a scale floated by and an astronaut stood on it, what would the scale say?
1.0kg
2.1/6 normal weight
3.9.8 m/s2
4.1/6 normal mass
neeeeeed helpppppp will give brainiest
Answer:
I think it is c
Explanation:
When water turns into water vapor it goes into the air so it must be lighter
Answer:
5
Explanation:
Provide a brief description of how the respiratory system works
Answer:
The lungs and respiratory system allow oxygen in the air to be taken into the body, while also letting the body get rid of carbon dioxide in the air breathed out. When you breathe in, the diaphragm moves downward toward the abdomen, and the rib muscles pull the ribs upward and outward.
Explanation:
What is the mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride,ZnCI[subscript 2]?
[Relative atomic mass : Zn = 65]
Answer:
16.25g
Explanation:
Equation for the reaction = Zn + 2Cl = ZnCl2
1 molecule of Zn = 2 molecule of Cl
x mole of Zn = 0.5mol of Cl
mole of Zn = 0.25mol
mass of Zn = 0.25 * 65 = 16.25g
The mass of zinc required to combine with 0.5 mol of chlorine to produce zinc chloride is 16.25g.
What is mass?Mass is the quantity of matter in a physical body.
The reaction is Zn + 2Cl = ZnCl₂
The ratio of moles of Zn and Cl
1 : 2
m, mol of Zn is equal to 0.5 mol of Cl
Moles of Zn = 0.25 mol
Multiply the mole of Zn and the relative atomic mass of Zn
Mass of Zn = 0.25 × 65 = 16.25 g.
Thus, the mass of zinc is 16.25 g.
Learn more about mass
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Which of the following is an example of a parasite?
a. A flea that bites an animal and sucks its blood to survive.
b. An orchid flower that sits on a tree branch
c. The bacteria that live in human intestines and help humans digest things.
d. An Egyptian plover that cleans a crocodile's teeth.
hmm helpo?
Answer:
a sorry if im wrong
Explanation:
what happens when you but a wire near oil
the wire would be damaged! oil damage to cables can be severe and will ultimately result in cable failure, downtime, and replacement costs.
:) hope this helps
how can i solve this question? can you pls help me
Answer:
what's the question ?
How many mm Hg is 9 atms?
6840.00 mmHg
(Please mark me brainliest! thank you in advance!!)
2. How would type of substance affect the rate of reaction?
How is the division of animal/human cells different from the division of plant cells?
HELP ASAP!!!
can someone help be determine the formulas for reactants and products as well as balance the equation, and what type of reaction is presented!!!!
I will make you the brain list!!!
Answer: owa owa
Explanation: owa owa owa owa
Which statement describes elements?
A. Each element is made up of the same type of atoms.
B. Each element is made up of different types of atoms.
C. All elements exist only in the liquid phase.
D. All elements are solid metals.
Answer:
B
Explanation:
What is a mixture? Plz help
Answer:
a substance made by mixing other substances together.
Explanation:
Answer:
a mixture is different things put together
Explanation:
Calculate the net force of the problem below and determine the direction it will travel
Answer:
Where is the Net force u were supoose to put below we cant anwser with nothing being displayed
Explanation:
Answer: need more info
Explanation:
9.31*10^3=_*10^5
please if you could explain it as well, i’m so confused and struggling
Identify the product(s) of the following reaction:
H
2
2
CO
3
3
→ H
2
2
O + CO
2
2
A
H
2
2
CO
3
3
B
H
2
2
and O
3
3
C
H
2
2
O and CO
2
2
D
O and O
2
2
Answer:
H20
Explanation:
means water but might not help
Where do fronts always form?
Fronts form over water and move inland.
Fronts form at boundaries between air masses.
Front form at high altitudes and descend toward Earth's surface.
Fronts form around locations with severe weather.
HELP PLEASEE LKSJAKN I BEG U
Answer:
1.2
Explanation:
how many atoms of argon gas are in 137 ml container at the pressure in the container is 8.80 X 10^5 mmhg and the temperature to 794 K
Answer:
#Ar atoms = 1.47 x 10²²
Explanation:
PV = nRT => n = PV/RT
P = 8.80 X 10⁵ mmHg = 8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm
V = 137ml = 0.137 Liter
n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar
R = 0.08206 L·atm/mol·K
T = 794K
PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K
=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar
= 1.47 x 10²² atoms Ar
1. Which of these is not a natural part of
Soil is a mixture of minerals, organic matter, water and air. The minerals come from bits of broken-down
rock. Organic matter is material that is alive or used to be alive. It includes leaves, twigs, bugs and many
microscopic, or tiny, organisms like bacteria and fungi. In fact, there are more microorganisms in a handful
of soil than there are people on the planet. Soil is needed for life to exist on Earth. It contains many
nutrients that help plants grow. Then the plants provide nutrients that help animals grow
A. pebbles of different sizes
B. plastic bottle caps
C. dead worms
D. plant roots
Which represents the greatest mass of fluorine?
there is no image so there's no way for me to know an answer
Answer:
You need to add a image for me to answer it love
What is the volume of 80 grams of gold?
Answer:
Volume of 80 grams of Gold
centimeter³ 4.14 milliliter 4.14
foot³ 0 oil barrel 2.6 × 10-5
Imperial gallon 0 US cup 0.02
inch³ 0.25 US fluid ounce 0.14
liter 0 US gallon 0
meter³ 4.14 × 10-6 US pint 0.01
metric cup 0.02 US quart 0
metric tablespoon 0.28 US tablespoon 0.28
metric teaspoon 0.83 US teaspoon 0.84
When a predator population increases what happens to the prey population? Increase Decrease Dies Stays the same
Answer: as the number of predators increases, more prey are captured. as a result the prey population starts to decrease.
What is the boiling point (in °C) of a 0.195 m
aqueous solution of K2S?
Enter your rounded answer with
3 decimal places.
Kb for water = 0.512 °C/m
Please hurry
Answer:100.3
Explanation:
1. What is the unit for electrical
conductivity?
Answer:
Siemens Per
Explanation:
S/m(Siemens per meter).
Answer:
The unit for electrical conductivity, is Siemens per meter in SI units. S/m
Which hand is negatively charged? Ο Α. OB. Oc. OD.
Answer:
it would be OA that is negatively charged