Answer:
Yes, chloromethane has stronger intermolecular forces than a pure sample of methane has.
Explanation:
In both methane and chloromethane, there are weak dispersion forces. However, in methane, the dispersion forces are the only intermolecular forces present. Also, the lower molar mass of methane means that it has a lower degree of dispersion forces.
For chloromethane, there is in addition to dispersion forces, dipole-dipole interaction arising from the polar C-Cl bond in the molecule. Also the molar mass of chloromethane is greater than that of methane implying a greater magnitude of dispersion forces in operation.
Therefore, chloromethane has stronger intermolecular forces than a pure sample of methane has.
Yes, the claim that a pure sample of chloromethane has stronger intermolecular forces than a pure sample of methane is correct.
Intermolecular forces are weaker forces (Van Deer Waal forces) of attraction that pull molecules together. They are weaker than covalent bonds and they arise as a result of interaction between positively charged and negatively charged species (polarity).
The types of Van Deer Waal forces that exist are in decreasing order are:
dipole-dipole forcedipole-induced dipole forceinduced dipole-induced dipole forceIf we consider the molecular structures of both chloromethane and methane, we will realize that chloromethane has a higher intermolecular force than methane. This is due to the bond polarizability in chloromethane that does not exist in methane.
Thus, chloromethane exhibit a dipole-dipole force of attraction while methane undergoes a weak induced dipole-induced dipole force due to its lower polarity than chloromethane.
Learn more about bond polarity here:
https://brainly.com/question/15099999?referrer=searchResults
Una muestra de 2,36 gramos de NaHCO3 se descompuso completamente en un experimento. 2NaHCO3 → Na2CO3 + H2CO3 En este experimento, el dióxido de carbono y los vapores de agua se combinan para formar H2CO3. Después de la descomposición, el Na2CO3 tenía una masa de 1,57 gramos. Determine la masa del H2CO3 producido. Calcule el porcentaje de rendimiento de H2CO3 para la reacción.
Answer:
105%
Explanation:
El porcentaje de rendimiento se define como la masa obtenida del producto (En este caso, en términos de H2CO3), dividida en la masa teórica que debe ser producida.
La masa real se obtiene con las moles del otro producto que fueron producidas (Que son las mismas moles producidas de H2CO3)
Y la masa teórica se obtiene a partir de las moles de reactivo adicionadas:
Masa teórica:
2.36g NaHCO3 * (1mol / 84g) = 0.0281 moles de NaHCO3
0.0281 moles de NaHCO3 * (1mol H2CO3 / 2 moles NaHCO3) =
0.014 moles de H2CO3 son producidas. La masa es:
0.014 moles de H2CO3 * (62g / mol) = 0.871g es la masa teórica
Masa real:
1.57g Na2CO3 * (1mol / 106g) = 0.014 moles de Na2CO3
0.0148 moles de Na2CO3 * (1mol H2CO3 / 1 moles Na2CO3) =
0.0148 moles de H2CO3 son producidas. La masa es:
0.0148 moles de H2CO3 * (62g / mol) = 0.918g es la masa real producida
Así, el porcentaje de rendimiento es:
0.918g / 0.871g * 100 =
105%
What is this plzzzzz helppp tyvmmmm
Why is radium more reactive than calcium?
Which would balance the equation? (Look at picture on my laptop)
-3
-4
-1
-2
The answer is 2
2H2 + O2 ---> 2H2O
any help would be much appreciated, i'm being timed :( i'll mark brainliest and 5 star
Answer:
3 times ....
group 2
Explanation:
Among the groups of elements listed below, which have the same number of electrons in their outermost energy levels? C, K, Ca, Rb, Sr
Na,Mg,AI,S
Li,B,C,F
F,CI,Br,I
Answer:
i believe its d
Explanation:
Answer:
I checked and I too think its D
Question 6 W If 50. mL of 1.0 M NaOH is diluted with distilled water to a volume of 2.0 L, the concentration of the resulting solution is А 0.025 M B 0.050 M C 0.10 M D 0.50 M E 1.0 M
Answer:
im not sure man
Explanation:
A block of material has a volume of 50 cubic centimeters, and a mass of 1,000 grams; what is that object's density?
O Why are you asking me this question??
0 .02 cc/g
O None of these answers N
O All of these answers
20 g/cc
050,000 g/cc
O 5 g/ccccc
Answer:
Density = [tex]20\ g/cm^3[/tex]
Explanation:
Given that,
Mass of the object, m = 1000 g
Volume of the block, V = 50 cm³
We need to find the density of the object. Density is equal to mass per unit volume.
d = m/V
[tex]d=\dfrac{1000\ g}{50\ cm^3}\\\\=20\ g/cm^3[/tex]
So, the density of the object is [tex]20\ g/cm^3[/tex].
Which of these elements is the most chemically reactive?
A.
strontium (Sr)
B.
beryllium (Be)
C.
radium (Ra)
D.
calcium (Ca)
The most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
The elements listed are alkaline earth metals, that is, they belong to group 2 of the period table.
The reactivity of alkaline earth metals increases down the group. That is, the reactivity increases with increase in atomic mass.
Among the listed element, radium (Ra) has the greatest atomic mass and it is the last element as we go down the group.
Hence, the most chemically reactive element among the listed elements is Radium (Ra). The correct option is C. radium (Ra)
Learn more here: https://brainly.com/question/3288105
I’ll mark you brainlist
Answer:
High mass star.
Explanation:
The mass of a star defines its life span. the least massive stars will live the longest and the most massive stars will use their fuel in a few million years and end in a spectacular supernova.
1. The molecular mass of hydrochloric acid (HCI) is 36.5 g/mol. How many moles of HCl are in 120g of HCI?
Answer:
3.3 mol HCl
General Formulas and Concepts:
Chemistry - Atomic Structure
Using Dimensional AnalysisExplanation:
Step 1: Define
120 g HCl
Step 2: Identify Conversions
Molar Mass of HCl - 36.5 g/mol
Step 3: Convert
[tex]120 \ g \ HCl(\frac{1 \ mol \ HCl}{36.5 \ g \ HCl} )[/tex] = 3.28767 mol HCl
Step 4: Check
We are given 2 sig figs as our lowest. Follow sig fig rules and round.
3.28767 mol HCl ≈ 3.3 mol HCl
ANSWER THESE 5 MULTPLE CHOICE QUESTIONS!!!
I'LL GIVE 30 POINTS AND A BRAINIEST:)
Answer: 1, magnesium & mg
2, two energy shells
Explanation:
Se sabe que un compuesto contiene 33.002% de carbono,9.063% de hidrogeno y el resto de oxigeno. El espectrometro de masas indica que la masa molecular aproximada es de 191g/mol(cual es la formula empirica y molecular probable
Answer:
CH3O
C6H18O6
Explanation:
Porcentaje de masa de oxígeno = 100% - (33,002% + 9,063%) = 57,935%
Divida el porcentaje en masa de cada elemento por su masa atómica relativa;
H- 9.063 / 1, C- 33.002 / 12, O - 57.935 / 16
H- 9.063, C- 2.75, O- 3.62
Dividir por la proporción más baja;
H-9.063 / 2.75, C- 2.75 / 2.75, O- 3.62 / 2.75
H- 3, C-1, O- 1
Fórmula emperical = CH3O
Dado que la masa molecular es 191 g / mol
Sea n el número de cada átomo de la molécula
Por tanto, su fórmula molecular es; (CH3O) n = 191
[12 + 3 (1) + 16] n = 191
31n = 191
n = 191/31
n = 6
Por lo tanto, la fórmula molecular del compuesto es; (CH3O) 6 que es C6H18O6
how many bonds can nitrogen have
Answer:
3
Explanation:
I think so, let me know if its wrong.
Weathering, erosion, and deposition act together in a cycle that wears down
and builds up Earth's surface. true or false???
Answer:
The answer is true. Hope this helps
Which most accurately describes the universe as we currently describe it?
Answer: The universe consists of all physical objects on earth in space
Explanation:
Hydrofluoric acid is what type of acid?
Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. Solutions of HF are colourless, acidic and highly corrosive. It is used to make most fluorine-containing compounds; examples include the commonly used pharmaceutical antidepressant medication fluoxetine (Prozac) and the material PTFE (Teflon).
Highlight the larger unit of measure under each letter (a-f). Then, write if the unit highlighted measures distance, volume, or weight (mass).
a. meter or kilometer
b. yard or foot
c. cup or quart
d. pound or ounce
e. liter or milliliter
f. gram or kilogram
Answer:
2. The unit could be gram or kilogram ⇒ answer f
3. The larger unit is kilogram and measures weight (mass)
Step-by-step explanation:
Let us revise the SI units of measuring
The SI unit of measuring distance is meter
The SI unit of measuring volume is liter
The SI unit of measuring mass is kilogram
2.
When this pet hamster is placed on a digital scale, the scale reads 1.5
∵ The SI unit of measuring weight (mass) is kilogram
∵ The scale reads 1.5
∴ The unit is kilogram
The unit could be gram or kilogram
3.
∵ The larger unit of measure is kilogram
∵ Kilogram measures the weight (mass)
∴ The unit measures weight (mass)
The larger unit is kilogram and measures weight (mass)
Explanation:
2Mg + O2
2Mgo
what is the coefficient
Answer:
In this chemical equation, there are two main elements. Those elements are magnesium (Mg) and oxygen (O). Molecules are a group of atoms bonded together, and in this case, the oxygen molecules is O2, but not 2MgO because there are two different molecules in this compound. Coefficients are a number that multiply an entire molecule, and are also placed in front of it. In this case, O2 has no coefficient, but a subscript of 2. But, every molecule in this equation must have a coefficient and if add a coefficient of 1 to the oxygen molecule, it does nothing to the overall balancing of equations.
So, the answer: coefficient to the oxygen molecule is 2.
Have a great day/night, stay safe, and merry christmas!
How many electrons would be in a calcium cation with a positive 2 charge?
Number of electrons in a Ca²⁺ = 18
Further explanationIn an atom there are levels of energy in the shell and sub shell
This energy level is expressed in the form of electron configurations.
Writing electron configurations starts from the lowest to the highest sub-shell energy level. There are 4 sub-shells in the shell of an atom, namely s, p, d and f. The maximum number of electrons for each sub shell is
• s: 2 electrons
• p: 6 electrons
• d: 10 electrons and
• f: 14 electrons
Charging electrons in the sub shell uses the following sequence:
1s², 2s², 2p⁶, 3s², 3p⁶, 4s², 3d¹⁰, 4p⁶, 5s², 4d¹⁰, 5p⁶, 6s², etc.
The element Ca has an atomic number of 20, so the number of electrons and protons (in neutral atoms) is also 20
Electron configuration of Ca : 1s², 2s², 2p⁶, 3s², 3p⁶, 4s² ⇒[Ar] 4s²
When Ca releases 2 electrons to gain stability (forming Ca²⁺ cations), the number of electrons becomes:
[tex]\tt 20-2 = 18[/tex]
and the electron configuration (Ca²⁺ ) becomes:
1s², 2s², 2p⁶, 3s², 3p⁶
A material that conducts electricity only at high temperatures.
A.Semiconductor
B.Compound
C.Luster
D.Brittle
Answer:
Semiconductor
Explanation:
Semiconductors conduct electricity as the temperatures increase.
Hope this helped.
If 1520 J are added to 16.5 g of water at 63.1 c what will the final temperature be
ANSWER ASAP!
How does a combustion reaction form?
What is Gallium Sulfide(Ga2S3).
Ionic or Covalent?
A 180-W resistor has 0.10 A of current through it. What is the potential difference across the resistor? Include numerical answer with correct units.
Ur a real one if u solve this no cap
And I only got 10 min to get the answer
Answer:
1800V
Explanation:
Given parameters:
Power in the resistor = 180W
Current = 0.1A
Unknown:
Potential difference = ?
Solution:
The power in a circuit is given as:
P = I V
P is the power
I is the current
V is the potential difference
Now insert the parameters and solve for V;
180 = 0.1 x V
V = 1800V
plz help me out guys
Answer:
Switch is the 2 circles
battery is the 2 lines
bulb is the x-men sign
Explanation:
Answer:
hope it helped you
have a nice day
this graphs represents
The process in which the nuclei of two atoms combine to form a heavier atom, releasing a large amount of energy is known as -
Answer: Nuclear fusion
Explanation:Nuclear fusion is the process by which two or more atomic nuclei join together to form a single heavier nucleus and large amounts of energy.
Object A has a mass of 500g and object B has a mass of 300g. Which object is more dense?
Answer:
500g because 300g is less dense than 500g its kinda like a weight
Explanation:
i
When collecting H2 gas from the reaction of Mg with HCl, it is desirable to have desirable to have which of the following scenarios?
Answer:
Explanation:
Excess hci