Answer:
The particles move very fast and collide into one another, causing them to diffuse, or spread out, until they are evenly distributed throughout the volume of the container. When more gas particles enter a container, there is less space for the particles to spread out, and they become compressed.
Explanation:
How much water should be added to 5.00 g of KCl to prepare a 0.500 m
solution? *
Molality = moles of solute
Kg of solvent
100 g
38g
500 g
134 g
Other
Answer:133.4
c
m
3
Explanation: Explanation:
Molarity is number of moles of solute divided by number of litres of solution.
M
=
n
V
Rearrange for V to give
V
=
n
M
Number of moles of KCl is the mass divided by the molar mass of KCl which is 75.5 g/mol, so (5/75.5) = 0.0667 moles.
Now plug in the numbers:
V
=
n
m
=
0.0667
0.5
=
0.1334
litres
So you need to add 0.1334 litres of 133.4
c
m
3
of water.
(NB: symbol for molarity is upper case M. m is metres).
Students in a science class prepared flash cards so that they could quiz one another about the
arrangement of the periodic table. One of the flash cards contained information about two
elements, Element L and Element M.
Qualities:
-Atom of element M has two more balances electrons than element atoms of L
- atoms of element L are more reactive than atoms of element M
-both elements are metals
The students had to use the information on n the flash cards to determine possible positions of the two elements on a blank periodic table. Which periodic table has the elements placed in the locations that match the information on the flash cards?
Answer:
the periodic table is G.
The periodic table has the elements placed in the locations that match the information on the flash cards is F.
What is periodic table?The term "periodic table" refers to an arrangement of all known elements in order of increasing atomic number and recurrent chemical attributes. The periodic table is organized into 118 elements.
The term "periodic table" can also refer to a table that lists all known chemical elements in rows and columns.
In the F table, L is found in alkaline earth metals while M is found in transition metals. M has more valence electrons than L, while L is more reactive than M.
Thus, the periodic table has the elements placed in the locations that match the information on the flash cards is F.
To learn more about periodic table, refer to the link below:
https://brainly.com/question/11155928
#SPJ5
What are the products of the following neutralization reaction? (No need to balance)
H3PO4 + Ba(OH)2 --> ??? + ???
A.)H2O + Ba3(PO4)2
B.)H30+ + BaPO4
C.)H30+ + Ba3(PO4)2
D.)H2O + BaPO4
H3PO4 + Ba(OH)2 --> Ba3(PO4)2 + H2O
so, (A) H2O + Ba3(PO4)2 is your answer.
Describe what is wrong with this sentence:
"When you kick a soccer ball, you create new
kinetic energy!"
Answer:
You transfer kinetic energy from you foot to the ball.
Explanation:
Energy cannot be created or destroyed.
Answer:
hi..,......
.....hsjnsgzgkskshbs
What type of energy transfer takes place when music is coming out of a speaker?
How many joules are required to melt 80 grams of ice to water at 0 C?
Explanation:
Its value is 6.02 kj/mol. This means for every mole of ice we melt we must apply 6.02 kj of heat. We can calculate the heat needed with the following equation:
q
=
n
×
Δ
H
where:
q
= heat
n
= moles
Δ
H
= enthalpy
In this problem we would like to calculate the heat needed to melt 35 grams of ice at 0 °C. This problem can be broken into three steps:
1. Calculate moles of water
2. multiply by the enthalpy of fusion
3. Convert kJ to J
Step 1: Calculating moles of water
35
g
×
(
1
m
o
l
18.02
g
)
=
1.94
m
o
l
s
Step 2: Multiply by enthalpy of fusion
q
=
n
×
Δ
H
=
1.94
×
6.02
=
11.678
k
J
Step 3: Convert kJ to J
11.678
k
J
×
(
1000
J
1
k
J
)
=
11
,
678
J
Finally rounding to 2 sig figs (since 34°C has two sig figs) we get
q
=
12
,
000
J
One last note, if the temperature were not 0 °C then the ice would have to be heated in addition to melted. This would be a phase change problem combined with a heat capacity problem.
what may happen when two light waves traveling from oposite directoins meet?
Answer:
The meet
Explanation:
Is oil a reasonable energy source? Why or why not?
Answer:
No, it is not.
Explanation:
Oil is a non-renewable source of energy. ... Burning oil can pollute the air. Much of our oil has to be imported and it is becoming more and more expensive as reserves reduce and imports increase. Producing electricity from crude oil is expensive compared to other fossil fuels such as coal or gas.
*You Can put this in your own words
Ca(NO3)2 wht is the mass
Answer:
164.088 g/mol
Explanation: hope this helps
Answer:
Calcium nitrate
Explanation:
164.088 g/mol
give me the brainliest plss
Calcium reacts with oxygen to form calcium oxide. Name the
reactants.
What of the following is NOT a common property of metals?
Answer:
the last one
Explanation:
liquid at room temp
Which choices are uses of electrical energy?
Choose all that apply.
A. creates useful gases
B. supplies energy for heat
C. provides power to lights
D. creates a magnetic force
Answer:
option A,B and C.
are the options I chose.
The electrical devices include those that are needed to power appliances and those that are used in daily life. In order to make things operational, they need power or energy.
Electrical energy is taken from the movement of electronically charged particles. These when collide produce energy that can be used for heating, lighting, etc.Hence the option C is correct.
Learn more about the choices are uses of electrical energy.
brainly.com/question/20580527
2 C2H6 + 7 O2 → 4 CO2 + 6 H2O How many moles of oxygen gas (O2) are needed to create EXACTLY 6 moles of Carbon dioxide(CO2)?.
Make a list of all the possible human sources of carbon dioxide. Giving brainliest
A beach ball has a volume of 2.5 L of gas while at a temperature of 500 K. If the volume decreases to 2 L, what is the new temperature?
Answer:
250k
I Really This Helps A Little Bit.
Air is made of nitrogen, carbon dioxide, and small amounts of other gases. What is the pressure of O₂, total is 1 atm if PN₂ = 593.4 mm Hg, PCO₂ = 3.0 mm Hg, and Pothers = 7.1 mm Hg? *
0.3 atm
0.2 atm
0.4 atm
0.8 atm
Answer:
The pressure of O₂ is 0.8 atm.
Explanation:
The pressure exerted by a particular gas in a mixture is known as its partial pressure. So, Dalton's law states that the total pressure of a gas mixture is equal to the sum of the pressures that each gas would exert if it were alone:
PT = PA + PB
This relationship is due to the assumption that there are no attractive forces between the gases.
In this case:
PT=Pnitrogen + Pcarbon dioxide + Pother gases
Being:
Pnitrogen: 593.4 mmHg Pcarbon dioxide: 3 mmHgPother gases: 7.1 mmHgand replacing:
PT= 593.4 mmHg + 3 mmHg + 7.1 mmHg
you get:
PT= 603.5 mmHg
Being 760 mmHg= 1 atm, you get:
PT= 603.5 mmHg= 0.8 atm
The pressure of O₂ is 0.8 atm.
If you start with 50 grams of H2O how much NaOH would you produce
2 Na + 2 H2O = 2 NaOH + H2
which is the correct answer
Answer:
3
Explanation:
Answer:
3. 0.50 mol
Explanation:
17) What is the molarity
of a solution with
55 grams of CaCl2
dissolved in .78 L
of water?
a. 64M
b. 1.3 M
c. 171 M
d. 91 M
The molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M. Details about molarity is found below.
How to calculate molarity?The molarity of a solution can be calculated by dividing the number of moles of the substance by its volume.
However, the number of moles of a substance must first be calculated using the following expression:
no of moles = 55g ÷ 111g/mol
no of moles = 0.49mol
Molarity of CaCl2 solution = 0.49mol ÷ 0.78L
Molarity of CaCl2 solution = 0.64M
Therefore, the molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M.
Learn more about molarity at: https://brainly.com/question/2817451
What are some facts about Radon???
Answer:
It was the fifth radioactive element discovered, and is typically a colorless gas that puts off an insane glow when frozen.
A gas occupies 12.3 L at a temperature of 40.0 K. What is the volume when the temperature is increased to 60.0 K?
Answer:
the volume is 18.45 L
Explanation:
The computation of the volume when the temperature is increased to 60.0 K is shown below:
Since the gas occupied 12.3 L at a temperature of 40.0 k
And, the volume when the new temperature is 60.0 k
So, the volume is
= 60.0 k × 12.3 L ÷ 40.0 k
= 18.45 L
hence, the volume is 18.45 L
what is the physical change of a liquid to a solid by the removal of heat?
Which of these is not a characteristic of sponges?
lack a backbone
lack a brain
stationary
have a nervous system
What are the 2 common uses for Polonium?
For the reaction of C 2H 4( g) with O 2( g), to form CO 2( g) and H 2O( g), what number of grams of CO 2 could be produced from 2.0 g of C 2H 4 and 5.0 g of O 2?
Answer:
4.58g of CO₂ could be produced
Explanation:
Based on the reaction:
C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g)
1 mole of C₂H₄ reacts with 3 moles of oxygen to produce 2 moles of CO₂
To solve this question we must find the moles of each reactant in order to find limiting reactant. With limiting reactant we can find the moles -And the mass- of CO₂ produced:
Moles C₂H₄ -Molar mass: 28.05g/mol-
2.0g * (1mol / 28.05g) = 0.0713moles
Moles O₂ -Molar mass: 32g/mol-
5.0g * (1mol / 32g) = 0.156moles
For a complete reaction of 0.0713 moles of C2H4 are required:
0.0713 moles C₂H₄ * (3 moles O₂ / 1 mol C₂H₄) = 0.214 moles of O₂
As there are just 0.156 moles, O₂ is limiting reactant.
The moles of CO₂ produced are:
0.156 moles O₂ * (2mol CO₂ / 3mol O₂) = 0.104 moles CO₂
The mass is -Molar mass CO₂: 44.01g/mol-
0.104 moles CO₂ * (44.01g / mol) =
4.58g of CO₂ could be producedA.6.10
B.90
C.6.00
6.20
Answer:
6.1
Explanation:
Because if you get to the large mark it would be 5 but since its not at 5, it would be 6.1 as you can see in my drawing. It aligns perfectly with 6.1.
The pressure of a gas is 750 torr when its volume is 400. ml. Calculate the
pressure in atm if the gas is allowed to expand to 600.0 mL at a constant
temperature.
a. 0.66 atm
b. 1.5 atm
c. 500. atm
d. 1130 atm
Answer:
a. 0.66 atm
Explanation:
Pi = 750 torr = 0.99 atm. Pf = ?
Vi = 400 ml Vf = 600ml
Using PiVi = PfVf
Then 400ml × 0.99atm = Pfatm × 600ml
Solving for Pf, we have,
Pf = (400ml × 0.99atm)/600ml
Pf = 0.66atm
What must be known to find an object's average speed?
*direction and time
*distance and time
*displacement and direction
Answer:
distance and time
Explanation:
total distance/ total time
Which change happens when a fan is turned on?
A. Electrical energy is changed into light energy
B. Heat energy is changed into mechanical energy
C. Mechanical energy is changed into sound energy
D. Electrical energy is changed into mechanical energy
Answer:
D. Electrical energy is changed into mechanical energy
Explanation:
When you turn on the fan, the electricity that is given through the power outlet allows the fan to have the available energy to spins the fan blades. By the fan's blades spinning, this is a movement that can be described as mechanical energy.
What is the volume of a canister filled with gas if its pressure is changed to 9.8 atm from 2.5 atm at a volume of 9.1 L?
Answer:
2.3 L
Explanation:
A change in pressure-volume at constant temperature is described by the Boyle's law. The mathematical relationship between initial pressure and volume (P₁ and V₁) and final pressure and volume (P₂ and V₂) is given by:
P₁V₁ = P₂V₂
We have the following data:
initial pressure: P₁= 2.5 atm
initial volume: V₁ = 9.1 L
final pressure: P₂= 9.8 atm
Thus, we introduce the data in the mathematical expression and calculate the final volume V₂, as follows:
V₂ = P₁V₁/P₂ = (2.5 atm x 9.1 L)/9.8 atm = 2.3 L
Therefore, the volume of the canister is 2.3 L.
