Answer:
F₂
Explanation:
Let the R₁ represent the rate of diffusion of Cl₂
Let R₂ represent the rate of diffusion of the gas.
Let M₁ represent the molar mass of Cl₂
Let M₂ represent the molar mass of the gas.
From the question given above, the following data were obtained:
NOTE: Assume the rate of diffusion of Cl₂ is 1.
Rate of diffusion of Cl₂ (R₁) = 1
Rate of diffusion of the gas (R₂) = 1.37 times R1 = 1.37 × 1 = 1.37
Next, we shall determine the molar mass of the gas. This can be obtained as follow:
Rate of diffusion of Cl₂ (R₁) = 1
Molar mass of Cl₂ (M₁) = 35.5 × 2 = 71 g/mol
Rate of diffusion of the gas (R₂) = 1.37
Molar mass of the gas (M₂) =?
R₁/R₂ = √(M₂/M₁)
1/1.37 = √(M₂/71)
Square both side
(1/1.37)² = M₂ /71
1/1.8769 = M₂ /71
Cross multiply
1.8769 × M₂ = 71
Divide both side by 1.8769
M₂ = 71 / 1.8769
M₂ = 37.8 g/mol
Since the gas is a homonuclear (the same element) diatomic molecule, we shall divide the molar mass of the gas molecule by 2 to obtain the molar mass of the element that makes up the molecule. This is illustrated below:
Molar mass of the element = 37.8 / 2
Molar mass of the element = 18.9 g/mol
Comparing the molar mass of the element with those in the periodic table, the element that makes up the gas is fluorine. Thus the molecular formula of the gas F₂.
While hiking in the Everglades, Melissa finds the fossil of a clam in a rock. In which type of rock would you most likely find a fossil?
Please answer this :)
Answer:
Sedimentary
Explanation:
Which property is NOT a physical property?
Melting Point
Color
Ability to Burn
Density
Answer:
im pretty sure color is the right one
Answer: Ability to Burn
Explanation: I TOOK THE TEST
please helppppp!!!
The Periodic Table is arranged by _______ properties:metals (mostly to the ____ of table,) metalloids(along the _____, and nonmetals) ( mostly to the ____ of table) . It is also arranged by chemical properties, including reactivity. Elements in the same vertical group have the same number of _____ electrons, and elements in the same horizontal period have the same number of _____ shells.
Explanation:
physicalleftmiddlerightouter mostelectron shellsHow does heredity explain how traits
are passed from one generation to the next?
Answer:
Heritable traits are known to be passed from one generation to the next via DNA, a molecule that encodes genetic information. ... Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes.
Explanation:
2. What are instrument strings made of now?
Answer: They are made of nylon, steel or sometimes gut.
Explanation:
Which of the following occurs in an ionic bond? *
O Oppositely charged ions attract.
OTwo atoms share two electrons.
Two atoms share more than two electrons.
Like-charged ions attract.
Answer:
Oppositely charged ions attract.
Explanation:
In an ionic bond oppositely charged ions attracts one another by electrostatic attraction.
To form ionic bonds, chemical species must lose or gain electrons. Most metals will lose their electrons due to electropositive nature. Non-metals gains the electrons. When a substance lose electrons, it becomes positively charged. A non-metal gaining electrons becomes negatively charged. The attraction between these two species forms the ionic bond.An electron at rest is subjected to two simultaneous constant magnetic fields; one is in the ax direction and the other is in the ay direction. The electron will:__________
Answer:
never move
Explanation:
Just like an electric current, we can only see the effects of magnetism when an electron is subjected to two simultaneous constant magnetic fields.
An electron at rest that is subjected to a magnetic field will never move but only in an electric field. The electrons are subjected to an electric force collinear with the electric field but in the opposite direction (the charge is negative).The acceleration vector tends to be in the same direction as the force, opposite the electric field.
Which choice best explains how global winds are formed?
Answer:
what are the choices?
Explanation:
In the process of eating, what kind of energy in food is transformed into heat energy by your body?
chemical energy
light energy
mechanical energy
Answer:The chemical energy
Explanation:because The chemical energy in the food you eat is changed into another kind of chemical energy that your body can use. Your body then uses that energy to give you the kinetic energy that you use in everything you do.
Answer:
c i think
Explanation:
1.3188g of antacid is weighed and mixed with 75.00 mL of excess 0.1746 M HCl. The excess wcid required 27.20 mL of 0.09767 M NaOH for back titration. Calculate the amount of CaCO3 in the tablet.
The amount of CaCO₃ in the tablet : 0.5219 g
Further explanationReaction
1. CaCO₃(in antacid) + 2HCl⇒ CaCl₂+H₂CO₃
2. Titration ⇒ HCl+NaOH⇒NaCl+H₂O
Reaction 2For titration :
M₁V₁.n₁=M₂V₂n₂(n=acid/base valence⇒NaOH/HCl=1)
mol HCl=mol NaOH = excess HCl
[tex]\tt 27.2\times 0.09767=2.657~mlmol[/tex]
Reaction 1mol HCl
[tex]\tt 75\times 0.1746=13.095~mlmol[/tex]
Moles of HCl used (reacted with CaCO₃) :
initial HCl - excess HCl =
[tex]\tt 13.095-2.657=10.438~mlmol=0.010438~mol[/tex]
From reaction 1 :
mol HCl : mol CaCO₃ = 2 : 1
[tex]\tt mol~CaCO_3=\dfrac{1}{2}\times 0.010438=0.005219[/tex]
mass of CaCO₃ :
[tex]\tt 0.005219\times 100~g/mol=0.5219~g[/tex]
Which of the following conditions would speed up the rate of decomposition? (Select
more than one answer)
a. Temperature at 50 degrees fahrenheit
b. Being buried
c. Overweight body
d. A body with illness
e. Temperature at 95 degrees fahrenheit
Answer:
E and B
Explanation:
the warmer the weather the faster it will decompose, this why is why sometimes bodies last longer frozen, or in cool temperatures.
that statement takes a out.
An illness shouldn't effect a decomposing body
Weight also shouldn't effect a decomposing body
Being buried can make bodies decompose fast because of all the bugs and other animals that will get down there and decompose it faster
Answer: B,E
Consider the reaction between NaOH (aq) and H2SO4(aq). 1) Please write the balanced reaction equation.
2) What is the concentration of the sodium hydroxide solution if 25.0 mL of it required 15.8 mL of a 0.350 M sulfuric acid for complete reaction?3) What is the concentration of the sodium hydroxide solution if 25.0 mL of it required 15.8 mL of a 0.350 M sulfuric acid for complete reaction?
4) If 14.0 mL of a 1.250 M sodium hydroxide solution and 25.0 mL of a 1.10 M phosphoric acid were reacted, what is the theoretical mass, in g, of the water produced?
Answer:
Explanation:
2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O .
2 ) 15.8 mL of .35 M sulphuric acid will contain .35 x .0158 moles of sulphuric acid
= .00553 moles
1 mole of H₂SO₄ reacts with 2 moles of NaOH
.00553 moles of H₂SO₄ will react with 2 x .00553 moles of NaOH
= .01106 moles
.01106 moles were contained in 25 mL
so concentration of NaOH = .01106 / .025
= .4424 M .
4 )
3NaOH + H₃PO₄ = Na₃PO₄+ 3H₂O .
14 mL of 1.25 M NaOH will contain .014 x 1.25 moles = .0175 moles
25 mL of 1.1 M phosphoric acid = .025 x 1.1 moles = .0275 moles
.0275 moles of phosphoric acid will require triple moles of NaOH , but it is in short supply . So NaOH is limiting reactant .
water formed = .0175 moles .
= .0175 x 18 grams of water
= .315 grams .
In nature element Carbon is found with different physical properties.Which allotrope of carbon is shown in the figure ? प्रकृति में कार्बन तत्व अनेक विभिन्न भौतिक गुणों के साथ विविध रूपों में पाया जाता है। चित्र में कार्बन के कौन से अपररूप की रचना दिखाई गई है ? *
Captionless Image
ਹੀਰਾ /Diamond/हीरा
ਬਕਮਿੰਸਟਰਫੁਲਰੀਨ /Buckminsterfullerene/बकमिंस्टरफुलेरीन
ਗ੍ਰੇਫਾਈਟ /Graphite /ग्रेफाइट
ਇਨ੍ਹਾਂ ਵਿੱਚੋਂ ਕੋਈ ਨਹੀਂ / None of the above/इनमें से कोई नहीं
Answer:
Graphite
Explanation:
The structure of diamond is similar to that shown, but has a middle layer that is offset from the others. The structure of Buckminsterfullerene is that of a soccer ball, 60 atoms arranged in a 32-faced figure.
The structure shown matches that of graphite.
10) the three factors that affect the rate of weathering are:
A.climate, color, and air quality
B. climate, type of rock and pollution
C. climate, luster of rock, and pollution
Why saturated fatty acid can't create kink?
Explanation:
because of double bond within chemical foundation.
Answer:
Saturated fatty acids exhibit a linear structure while unsaturated fatty acids bend, or kink, due to double bonds within the chemical foundation.
Which type of weathering causes the mineral composition of rocks to change?
Chemical weathering
General weathering
Mechanical weathering
Permeable weathering
Answer: chemical weathering
Explanation: Chemical weathering is different from mechanical weathering because the rock changes, not just in size of pieces, but in composition. That is, one type of mineral changes into a different mineral. Chemical weathering works through chemical reactions that cause changes in the minerals.
Answer:
I am not very sure but I think it's chemical weathering
what is the combustion reaction for CH3OH(l)
Answer:
CH3OH(l) + 3 2 O2(g) → CO2(g) + 2 H2O(l
Explanation:
.
What are three examples of matter you can see where you are right now. Thanks for the help everyone!
Answer: So you are matter, the apple, water, a computer etc.
Explanation: matter is anything that takes up space
please help me asap
the gravity of the sun keeps them in their orbits just as the moon orbits the earth because of the pull of Earth's gravity the earth orbits the sun because of the pull of the sun's gravity
HELP ME PLEASE!!!!!!!!
Describe how this instrument works.
Operation:
Answer:
It amplifies the picture of something far away.
Explanation:
Answer:
Light from the moon reflects from large mirror, bent by small mirror, focused at focal point, magnified by eyepeice.
Explanation:
Is this true or false? :D
Answer:
true i am pretty sure
Explanation:
the ans. is false (:) ok
which of these phrases best describes an ecosystem
Answer:
all the living organisms in a specific location 2. ...
Identify some biotic factors in the diagram.
Identify some biotic factors in the diagram.
Identify some biotic factors in the diagram.
Identify what this diagram represents? ...
Give one effect that an increase in the minnow population would have on the ecosystem.
what star sign would you be if you were born on 1st January?
What is the orbital or electronic geometry of a molecule with 0 nonbonding electron pairs and 2 bonding electron pairs?
What type of bonding would be expected in argon?
Answer:
Argon is a member of the noble gas family of elements. This means that it already has eight valence electrons in its outermost shell. Because of this, Ar rarely bonds with other atoms to form compounds
Explanation:
How does the acid level of a lake affect how many fish live there?
The dependent and independent Variable?
Answer:
it affects by how many fishes it kills i think
Explanation:
Which of the following graphs correctly shows the relationship between potential energy and internuclear separation for two hydrogen atoms
Answer:
D
Explanation:
The potential energy curve of a system of atoms define the potential energy of the atoms with respect to the inter-nuclear separation. The minimum point of the curve represents the equilibrium bond length of the bond.
The energy of the system depends on the distance between the two interacting atoms.
Looking at the potential energy curve for hydrogen molecule in option D, we can assert that a chemical bond indeed exists between the two atoms of hydrogen and the minimum point of the curve is the equilibrium bond length of the bond.
A common relation between potential energy and internuclear distance when stated, is applicable to the ground states of diatomic and polyatomic molecules.
The graphs that correctly shows the relationship between potential energy and internuclear separation for two hydrogen atoms is option d.The potential energy of two separate hydrogen atoms often becomes lower as they approach each other, and the single electrons on each atom are shared to form a covalent bond.
The bond length is regarded as the internuclear distance where the lowest potential energy is gotten. The strong attraction of each shared electron often stabilizes the system.
Learn more from
https://brainly.com/question/18484436
If an athlete weighs 159 lb and has 15.0% % body fat by weight, how many pounds of fat does the athlete's body contain?
Answer:
23.85
Explanation:
is over of percent over 100
[tex]\frac{x}{159}[/tex]x[tex]\frac{15}{100}[/tex]
15 x 159 = 2385
2385 ÷ 100 = 23.85
If an athlete weighs 159 lb and has 15.0% % body fat by weight, the athlete's body contains approximately 23.84 pounds of fat.
To calculate the number of pounds of fat in the athlete's body, we can use the following steps:
Convert the athlete's weight from pounds to kilograms:
159 lb × 0.4536 kg/lb = 72.1224 kg
Calculate the weight of the athlete's body fat:
72.1224 kg × 0.150 = 10.81836 kg
Convert the weight of body fat from kilograms to pounds:
10.81836 kg × 2.2046 lb/kg = 23.8447 lb
Therefore, the athlete's body contains approximately 23.84 pounds of fat.
Learn more about fats here:
https://brainly.com/question/8073542
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What is the mass percentage of carbon in 5.000 g of sucrose? 50.00 g of sucrose?
500.0 g of sucrose? Explain.
Answer:
first you have to know the molecular formula of carbon which is C12H22O11, Then with that you can calculate the mass of each element in the molecule. C:12.01*12= 144.12, H: 1.008*22= 22.176, O: 16*11= 176
Explanation: give me brainliest pls
