The percentage of Carbon (C) present in one molecule of
Dichlorodifluoromethane (CF₂Cl₂) : 10%
Further explanationProust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired
MW Dichlorodifluoromethane (CF₂Cl₂) :
=12+2.19+2.35=120 g/mol
[tex]\tt \%mass~C=\dfrac{12}{120}\times 100\%=10\%[/tex]
When 2.5 moles of N2 react according to the reaction below, how many moles of NH3 will be produced?
N2 + 3 H2 --> 2 NH3
O 2.5 moles NH3
0 2.0 moles NH3
O 1.3 moles NH3
5.0 moles NH3
Answer:
5 mol
Explanation:
by stoichiometry
nN2/1=nNH3/2
2.5=nNH3/2
nNH3=2.5×2
nNH3= 5 mol
Answer: I got 5.0 moles
Explanation:
what is the
difference between ice
and water vapour.
Answer:
Nothing. I guess ice vapor is a solid and water vapor is a liquid if nothing isn't an option, but that makes no sense.
Explanation:
6H2 represents how many atoms of hydrogen?
Answer:
i think its 12, but i'm not 100% sure
Explanation:
what is the name of the compound represented by the formula SI2BR6
Answer:
Disilicon Hexabromide
Explanation:
A compound H2O is named – Dihydrogen monoxide. Its common name is of course water. A compound of Si2Br6 is named – Disilicon Hexabromide. 2.
Which of the following subatomic particles are found surrounding the nucleus and have a negative charge?
F negatrons
G neutrons
H protons
J electrons
Answer:
J electrons
Explanation:
Electrons are the negatively charged subatomic particles that surrounds the nucleus of an atom.
Electrons occupy the bulk volume of an atom. These particle was discovered by J.J ThomsonThey found orbiting the extra-nuclear space of every atom. The nucleus is made up of protons and neutrons.If the momentum of a car is reduced by half, assuming mass did not change, what must also have been reduced by half?
Answer:
Velocity is halved
Explanation:
Momentum is contingent on mass and velocity. The quantity of motion in a body is called the momentum of the body.
Momentum = mass x velocity
Now, if mass does not change and momentum is reduced by half, it suggests that the velocity was reduced by half.
Velocity is directly related to momentum.
Which states of matter can form solutions?
A. Gas-liquid
B. Solid-solid
C. Solid-liquid
D. All of the above
Answer:
c
Explanation:
spongebob cheese pants
Answer:
I believe D
Explanation:
im not super sure but I'm pretttyyy sure
Which part of the atom can be transferred from one atom to another to form
ions?
a. Protons
b. Neutrons
c. Valence Electron
d. Nucleus
Answer:
Explanation: Valance Electron
Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe. When she lifts her foot, she sees long strings of gum between her shoe and the sidewalk. She thinks, "What a great demonstration of the properties of metals!"
What properties of metals would Mrs. Franklin most likely teach about with this demonstration?
conductivity and luster
ductility and malleability
malleability and reactivity
conductivity and ductility
Answer:
Ductility and Malleability
Explanation:
Pls mark my answer as brainliest
Answer:
the correct answer is Ductility and Malleability....(B)....
Explanation:
I took the test, hope this helps. also the person above me is correct
State the career function of mechanical engineering
Answer:
Mechanical engineers design power producing machines, like electric generators, internal combustion engines, and steam and gas turbines, also power using machines, such as refrigeration and air-conditioning systems. Mechanical engineers design other machines inside buildings, such as elevators and escalators.
Explanation:
Loose sugar dissolves much faster than a sugar cube because loose sugar?
A. Has greater surface area
B. Has less kinetic energy
C. Has a higher temperature
D. Has greater surface tension
Loose sugar dissolves much faster than a sugar cube because loose sugar (a) has greater surface area.
When any solute dissolve in ground into small pieces it dissolve faster in solvent than large pieces because in small ones the large surface area is exposed into solvent.
With the greater surface area is exposer, the contact in between the solute particles and the solvent is more. this is the reason that loose sugar cube dissolve much faster than sugar cube as sugar cube has less surface area in contact with solvent.
Thus, Loose sugar dissolves much faster than a sugar cube because loose sugar (a) has greater surface area.
To learn more about solubility here
https://brainly.com/question/8685116
#SPJ1
Select ALL of the following statements that are incorrect.
Solids, liquids, and gases are all able to act as solutes in a solution.
Solids, liquids, and gases are all able to act as solvents in a solution.
Solids are not able to act as a solvent if a gas is the solute.
Gases are not able to act as a solvent if a solid is the solute.
Answer:the 4th one is incorrect,and the 1st one is incorrect hope this helps.
Adsorption is defined as a process in which gas molecules tend to adsorb on the surface of a solid solvent.
Therefore, the statement solids are not able to act as a solvent if a gas is the solute, is false.
On the other hand, gases can also act as a solvent if a solid is the solute.
Explanation:
Adsorption is defined as a process in which gas molecules tend to adsorb on the surface of a solid solvent.
Therefore, the statement solids are not able to act as a solvent if a gas is the solute, is false.
On the other hand, gases can also act as a solvent if a solid is the solute.For example, air present in the surrounding acts as a solvent and solid substances present in the surrounding acts as a solute.
Hence, the statement gases are not able to act as a solvent if a solid is the solute, is false.
Thus, we can conclude that following are the statements which are incorrect.
Solids are not able to act as a solvent if a gas is the solute.
Gases are not able to act as a solvent if a solid is the solute.
List the elements that make up the compound copper sulfate
write the complete balanced equation for the decomposition of AI(CIO3)3.
Answer:
2AL(ClO3)3 → 2ALCl3 + 9O2
Explanation:
K20
Molar Mass (g/mole)
2(39.10) + 16.00 = 94.20 g/mole
Moles
5.85 moles
Mass (grams)
Particles
Answer:
yes
Explanation:
that is the answer
At the Beltway Outlet store, you buy x computer games for 13$ each and a magazine for 4$. Write an expression in simplest form that represents the total amount of money you spend. Someone please help
Answer:
y = 13x + 4
Explanation:
Given parameters:
number of computer games bought = x
cost of each games = $13
number of a magazine = 1
cost of magazine = $4
Unknown:
Total amount of money spent = ?
Solution:
The total amount spent;
let total amount = y
y = total cost of magazine + total cost of computer games
total cost of magazine =$4
total cost of computer games = 13x
y = 13x + 4
What is the total number of atoms in 0.20 mol of propanone, CH3COCH3?
NA = 6.022 x 1023
1.2 x 1022
1.2 x 1023
6.0 X 1024
6.0 x 1023
Answer:
1.2×10²³ atoms.
Explanation:
Data obtained from the question include:
Mole of propanone = 0.20 mole
Number of atoms of propanone =.?
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.
This implies that 1 mole of propanone also contains 6.022×10²³ atoms.
Thus, we can obtain the number of atoms in 0.20 mole of propanone as illustrated below:
1 mole of propanone contains 6.022×10²³ atoms.
Therefore, 0.20 mole of propanone will contain = 0.2 × 6.022×10²³ = 1.2×10²³ atoms.
Thus, 0.20 mole of propanone contain
1.2×10²³ atoms.
The total number of atoms in 0.20 mole of propanone is 1.2×10²³, i.e. in given mole 1.2×10²³ atoms of propanone is present.
How many atoms present in one mole?In one mole of any substance 6.022 × 10²³ atoms of that substance will present, and this number is known by the name of Avogadro's number.
We have given moles of propanone = 0.20 mole
No. of atoms present in 0.20 mole of propanone = 0.20 × 6.022×10²³ = 1.2×10²³.
Hence, 1.2×10²³ atoms are present in given moles.
To know more about Avogadro's number, visit the below link:
https://brainly.com/question/10614569
Which of the following best describes a hypothesis?
A. An explanation that is supported by scientific data
B. A proven explanation for experimental results
c. A possible answer to a scientific question
D. A question about the natural world
please help i will give brainliest
Is vacuole a plant or animals cell
Answer:
plant
Explanation:
let me know if correct
Consider the reaction: 3 N2 (g) + 2 O3 (g) → 6 NO (g) ΔfH ° (kJ/mol) 0.00 142.26 90.37 Sm ° (J mol-1 K-1) 191.5 237.7 210.6 What is ΔrG ° for this reaction in kJ/mol at 350 K?
Answer:
Explanation:
3 N₂ (g) + 2 O₃ (g) → 6 NO (g)
Δ H(rxn ) = 90.37x 6 - ( 0 + 142.26 x 2 )
= 542.22 - 284.52
= 257.7 kJ
Δ S(rxn ) = 6 x 210.6 - ( 2 x 237.7 + 3 x 191.5 )
= 1263.6 - ( 475.4 + 574.5 )
= 213.7 J / K
Δ G = Δ H - T Δ S
= 257.7 - 350 x 213.7
= - 74537.3 kJ .
Δ G / mole = - 74537.3 / 6 = - 12422.88 kJ / mol.
how many sig figs are in 0.0093
Answer:
there are two significant figures
Explanation:
Answer:
there are two
Explanation:
because the zeros dont count
1. What part of the human body has the same role as the power source in a computer?
2.What part of the human body has the same role as the keyboard or the mouse on a computer?
Answer:
1. The brain
2. MOUSE / KEYBOARD = HANDS
Explanation:
1.The CPU is like the brain of the body. The CPU controls the computer and is the most important part of a computer; similar to the way the brain controls the human body and is very important. Get it?
2.Both are input devices. They are used to send in instructions and information into and out of the computer.
Hope this helps!
How many grams of glucose are in 4.5x1023 molecules of glucose?:
Answer:
[tex].5865 \\ \\ \\ \\ \\ \5865[/tex]
[tex] \\ \\ 5865 \inf \inft \cos( \\ \) [/tex]
If 150 G of war started burning 300 G of where as was left behind how many grams of CO2 gas is released
Answer:
geruow0irghvn3p0unhie0ghik
Explanation:
Which of these products was made using a renewable resource?
O A. Paper plate
O B. Aluminum can
O C. Copper pan
O D. Plastic bag
Answer:
paper plate
Explanation:
A renuable source is a source that would replenish in ones lifetime. Trees make paper and grow in the span of a average human life.
1. Why is soil erosion relatively less in dense forests as compared to barren, open fields?
Because the deep roots of big trees hold the soil and don't let it slip away simply by rain or wind.
Answer:
the roots of the trees keep the soil in place opposed to a barren landscape that has little to no plants to keep the soil in place
hope this helps (╹ڡ╹ )
In lab you reacted 60 grams of propane (C3H8) with 13 grams of oxygen gas (O2). Your
reaction made 63 grams of water (H2O). The reaction is shown below:
How much carbon dioxide (CO2) is released into the air?
C3H8 + 5O2 ------> 3CO2 + 4H2O
10 g
73 g
120 g
1368
Answer:
120g
Explanation:
Based on the reaction, when 1 mole of propane and 5 moles of oxygen react, 3 moles of CO2 and 4 moles of H2O are produced. The ratio of production is 3 moles of CO2 per 4 moles of H2O.
Thus, we need to convert mass of water to moles using its molar mass:
Moles H2O (Molar mass: 18g/mol):
63g H2O * (1mol / 18g) = 3.5 moles H2O
Converting to moles of CO2:
3.5 moles H2O * (3 moles CO2 / 4 moles H2O) = 2.625 moles CO2
Mass CO2 (Molar mass: 44g/mol):
2.625 moles CO2 * (44g / mol) = 115.5g of CO2 are released
120gExpress in scientific notation. Choose the answer with the proper number of significant figures. 9x10^9/4.5x10^1
Answer:
Your answer should be 2.4 x 10^9. please hit the crown
Explanation:
What is the term
chemistry
Answer:
Chemistry is the scientific study of the structure of substances, how they react when combined and how they behave under different situations.
Answer:
The branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
Explanation:
Hope this helps!!!!!!
:)
12 Ethene gas, CH is completely burned in excess oxygen to form carbon dioxide and water
The equation for this exothermic reaction is shown.
CH 30, - 200, 2H,0
The table shows the bond energies involved in the reaction
bond
bond energy
(kJ/moly
614
413
C-C
CHH
0 0
СО
495
799
O-H
467
What is the total energy change in this reaction?
A-954 kJ/mol
B-1010 kJ/mol
C-1313 kJ/mol
D-1359 kJ/mol
Answer:
12 Ethene gas, CH is completely burned in excess oxygen to form carbon dioxide and water
The equation for this exothermic reaction is shown.
CH 30, - 200, 2H,0
The table shows the bond energies involved in the reaction
bond
bond energy
(kJ/moly
614
413
C-C
CHH
0 0
СО
495
799
O-H
467
What is the total energy change in this reaction?
A-954 kJ/mol
B-1010 kJ/mol
C-1313 kJ/mol
D-1359 kJ/mol
Explanation:
thats all you said