3. an exothermic reaction
Nitrogen was heated from 17°C to 37°C. The original volume of nitrogen was 8.5 L. Find the new volume in liters assuming P and n remain the same.
Answer:
The new volume of the gas is 9.086 liters.
Explanation:
Let suppose that nitrogen has a behavior of ideal gas, the equation of state for ideal gases is:
[tex]P\cdot V = n \cdot R_{u}\cdot T[/tex] (1)
Where:
[tex]P[/tex] - Pressure, measured in atmospheres.
[tex]V[/tex] - Volumen, measured in liters.
[tex]n[/tex] - Molar amount, measured in moles.
[tex]T[/tex] - Temperature, measured in Kelvin.
[tex]R_{u}[/tex] - Ideal gas constant, measured in atmosphere-liters per mole-Kelvin.
If pressure and molar amount of the gas remain constant, then we construct the following relationship:
[tex]\frac{T_{1}}{V_{1}} = \frac{T_{2}}{V_{2}}[/tex] (2)
If we know that [tex]T_{1} = 290.15\,K[/tex], [tex]P_{1} = 8.5\,L[/tex] and [tex]T_{2} = 310.15\,K[/tex], then the new volume of the gas is:
[tex]V_{2} = \left(\frac{T_{2}}{T_{1}}\right)\cdot V_{1}[/tex]
[tex]V_{2} = \left(\frac{310.15\,K}{290.15\,K} \right)\cdot (8.5\,L)[/tex]
[tex]V_{2} = 9.086\,L[/tex]
The new volume of the gas is 9.086 liters.
What type of atmospheric pressure is associated with tornadoes,
hurricanes, and thunderstorms?
Answer:
Explanation:
The ingredients are warm ocean water, weak upper level winds, and low pressure. The warm ocean water supplies the moisture for the hurricane. The weak upper levels winds allow the developing hurricane to not tear apart, and the low pressure allows thunderstorms to develop.
What are polyatomic ions and how are they formed?
Answer:
Polyatomic ions are covalently bonded groups of atoms with a positive or negative charge caused by the formation of an ionic bond with another ion. Compounds formed from such ion combinations are called polyatomic ionic compounds, but the polyatomic ion behaves as a single uni
Explanation:
Suppose that your experimental value for the specific heat capacity of your
unknown is 0.37 J (g°C). How would you be able to positively determine which
of the metals in Table 3 is your unknown?
Answer:
The way you can determine which is the unknown metal is measuring for denstity, compare the results and that should give you the unknown metal you are trying to find.
Density is the unit volume occupied by a given mass of a material
Specific heat capacity is the required heat that raises a given mass of substance temperature by one degree
The unknown metal can be positively determined by comparing the known values of the specific heat capacities to the experimental valuesGiven that the likely metals are zinc and copper, the volume of water displaced in the calorimeter can be used differentiate between the two; 86.5 g of zinc displaces 2.743 cm³ more water than copperReasons:
The possible values in the table of values in the table for the question are;
[tex]\begin{array}{|l|c|c|}\mathbf{Metal}&\mathbf{Atomic \ Mass \ Unit}&\mathbf{Sprecific \ Heat \ Capacity}\\Zinc&65.4&0.38\\Titanum&47.9&0.52\\Tin&118.7&0.22\\Copper&63.5&0.38\\Barium&137.3&0.19\\Aluminum&27.0&0.90\end{array}\right][/tex]
Given that the experimental value for the specific heat capacity of your unknown is 0.37 J/(g·°C), to determine positively which metals in Table 3 is your unknown, we have;
The two metals with specific heat capacities close to 0.37 J/(g·°C) are copper and zincThe given difference between the two metals can be used to determine the unknown metal as follows;
Atomic mass unit of copper = 63.5 amu
Atomic mass unit of zinc = 65.4 amu
The given mass of the unknown metal rod is 86.5 g
The density of zinc is 7.133 g/cm³
The density of copper is 8.96 g/cm³
The volume of water displaced by the 86.5 g of the metal is therefore;
For zinc:
[tex]Volume = \dfrac{86.5}{7.133} \approx 12.127[/tex]
The volume of water displaced if the unknown metal is a zinc rod is 12.127 cm³
For copper, we have:
[tex]Volume = \dfrac{86.5}{8.96} \approx 9.654[/tex]
A metal sample of zinc displaces (12.127 - 9.654 = 2.743) 2.743 cm³ more water than copper, in the calorimeter
Therefore;
The volume of water displaced in the calorimeter will be 12.127 cm³ if the metal is zinc while 9.654 cm³ will be displaced if the metal is copper
Learn more here:
https://brainly.com/question/15178340
How do I know if hand soap is working properly and how are some methods I can test it?
Answer:
Part A) By seeing if your hands are clean and dont have germs
Part B) Dip your hands in mud and then wash your hands to see results
Explanation:
The puppies in the photograph above are from the same litter. Their inherited traits, such as fur color, are coded onto molecules of —
A chemical reaction yields 1 mole of lithium hydroxide (LiOH). How many grams of
lithium hydroxide are present?
3 g
48 g
728
24 g
Mass of LiOH= 23.95 grams ≈ 24 g
Further explanationGiven
1 mole of lithium hydroxide (LiOH)
Required
Mass of LiOH
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
n = mass : molar mass
Input the value :
mass = n x molar mass
mass = 1 mole x 23,95 g/mol
mass = 23.95 grams ≈ 24 g
The mass of 1 mole LiOH has been 24 g. Thus, option D is correct.
The mass of a compound present in a mole of sample has been equivalent to the molar mass of the compound. The molar mass of the compound has been the sum of the constituent in a formula unit.
The molar mass of lithium hydroxide (mwt) has been given as:
[tex]mwt=m_L_i\;+\;m_O\;+\;m_H[/tex]
Where, the mass of Li is [tex]m_L_i=6.941\;\rm g[/tex]
The mass of oxygen is [tex]m_O=16\;\rm g[/tex]
The mass of hydrogen is [tex]m_H=1\;\rm g[/tex]
Substituting the values for molar mass (mwt) of LiOH:
[tex]mwt=6.941\;+\;16\;+\;1\;\text g\\mwt=23.941\;\text g\\mwt=24\;\text g[/tex]
The molar mass of LiOH has been 24 g.
The molar mass has been equivalent to the mass of 1 mole of sample. Thus, the mass of 1 mole LiOH has been 24 g. Thus, option D is correct.
For more information about mass of mole, refer to the link:
https://brainly.com/question/1370888
All organisms need glucose or a source of________ to carry out basic life functions
Answer:
chlorophyll
Explanation:
i am not sure i am thinking A and C
Answer:
I think so too
Explanation:
How much heat is necessary to change 10.0g of water from 20 degrees celsius to 75 degrees celsius
Answer:
6
Explanation:
How many GRAMS of H2 would you need to produce 2.5 mol NH3?
Place the following metals in order of most reactive to least:
Aluminium
Calcium
Copper
Iron
Magnesium
Sodium
Zinc
Answer:
Sodium
Calcium
Magnesium
Aluminium
Zinc
Iron
Copper
Explanation:
hello, please can you solve my question:
an atom contains 22 protons and 26 neutrons. What is it's mass number?
I will mark brainliest
What type of atom is formed by the loss of one or more electrons?
An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.
A student in a chemistry laboratory has access to two acid solutions. The first one is 20% acid and the second solution is 45% acid.(The percentages are by volume). How many millilitres of each solution should the student mix together to obtain 100ml of a 30% acid solution?
Volume of each solution : 60 ml 20% and 40 ml 45%
Further explanationGiven
20% and 45% acid
100 ml of 30% acid
Required
Volume of each solution
Solution
Molarity from 2 solutions :
Vm Mm = V₁. M₁ + V₂. M₂
m = mixed solution
V = volume
M = molarity
V₁ = x ml
V₂ = (100 - x) ml
Input the value :
100 . 0.3 = x . 0.2 + (100-x) . 0.45
30 = 0.2x+45-0.45x
0.25x=15
x= 60 ml
V₁ = 60 ml
V₂ = 100 - 60 = 40 ml
For the preparation of the 30% 100 ml acid solution, 40 ml 45% solution has been mixed with 60 ml 20% acid solution.
To prepare the solution with the concentrated solution:
MV = M1V1 + M2V2
The M has been the concentration of the resulted solution, and V has been the volume of the resulting solution.
M1 and M2 and V1 and V2 have been the concentration and volume of the given solution.
0.30 × 100 ml = 0.20 × x + 0.45 × (100 - x)
30 = 0.20x + 45 - 0.45x
0.45x - 0.20x = 45 - 30
0.25x = 15
x = 60 ml
The volume of 20% solution has been x = 60 ml
The volume of 45% solution has been 100 - x = 40 ml.
For the preparation of the 30% 100 ml acid solution, 40ml 45% solution has been mixed with 60ml 20% acid solution.
For more information about the acid preparation, refer to the link:
https://brainly.com/question/1457002
How could we separate the baking soda from the after after it had already been mixed in? helppp!!!
Answer:
i thing by filtering
Explanation:
A ball is kicked straight up. The ball's speed decreases as it moves upward. Why does the ball's
speed decrease?
A ) Because a force given to the ball by the kick becomes equal to the force of gravity
O Because one or more forces are acting to slow the ball down
O Because a force given to the ball by the kick completely runs out
O Because a force given to the ball by the kick becomes less than the force of gravity
Answer:
I think the third one
A ball kicked straight up slows down as it moves upward because the force given to the ball by the kick completely runs out. Thus, the correct option is C.
What is Gravitational force?Gravitational force of the planet earth acts on every object which has some mass. When an object is thrown upwards the gravitational force of the earth acts against the velocity of the object such as ball and pulls the object downwards, i.e., towards itself on the ground. Thus, the object returns back towards the surface of earth.
The direction of a ball's motion while thrown upward is changing as it rises into the air when thrown. The speed of the ball decreases because the force of gravity pulls it towards the ground and makes the distance it covers decrease.
Therefore, the correct option is C.
Learn more about Force here:
https://brainly.com/question/13191643
#SPJ2
what is the full name of the compund CuSO4?
Please can you help me? (✿◡‿◡)
CuSO4 is Copper Sulphate.
The weight of an object is different on each planet because _____.
1.each planet is a different distance from the sun
2.each planet has a different force of gravity
3.mass of the object changes on each planet
4.mass changes with location
What is the Molecular formula of lemon???
Explanation:
Answer:
[tex]C_{36}[/tex][tex]H_{32}[/tex][tex]Cl_{4}[/tex][tex]N_{6}[/tex][tex]O_{4}[/tex]
If 15.0 g CH3OH reacts with 10.0 g of CO, which is the limiting reagent and what is the theoretical yield of CH3COOH?
Answer:
Explanation:
CH₃OH + CO = CH₃COOH .
32 g 28 g 60 g
CH₃OH = 15 g ; CO = 10 g
32 g of CH₃OH reacts with 28 g of CO
15 g of CH₃OH reacts with 28 x 15 / 32 g of CO
= 13.125 g of CO .
CO given = 10 g , so CO is the limiting reagent .
28 g of CO reacts with CH₃OH to produce 60 g of CH₃COOH
10 g of CO reacts with CH₃OH to produce 60 x 10 / 28 g of CH₃COOH
CH₃COOH produced = 600 / 28 g = 21.42 g .
Answer: CO
Explanation:
1. B How many grams are in 5.00 mol of CO2? CO2 molar mass is 44 g/mol. 1 point Grams = Moles X Molar Mass
Answer: 220 g
Explanation:
To find the answer to this problem, all you need to do is multiply the number of moles by the molar mass of the molecule.
In this problem, you multiply 44 (the molar mass of CO2) by 5 (the grams of CO2 given) to get 220.
Answer:
220 g
Explanation:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CO2, or 44.0095 grams.
Please help fast! I will give brainliest!
Answer:(c)
Explanation:
ILL GIVE YOU BRAINLIEST <3
1) How many total atoms in the molecule: (NH4)2SO4
a) 15 b) 14 c) 12 d) 10
Answer:
Should be a 15 imo
Explanation:
N is one, 4H = 4, S 2 because of the 2 and O 8 because of the 4 and the 2 before the S.
Calculate the number of moles found in 88.02g of CO2
Answer:
2.00moles
Explanation:
mol=mass/mr
88.02/ [12+2(16)] = 2.00
What does evaporation do to salinity? Question 2 options: water molecules (H20) absorb energy where there are higher levels of evaporation, the water has greater salinity warmer water molecules move farther apart it does not impact salinity
Answer:
the water has greater salinity
Explanation:
The term "Salinity" refers to the amount of salt present in water. Recall that the amount of solute increases when the volume of solution decreases. This is because the amount of substance present in a solution depends on the volume of the solution.
Hence, as water evaporates, the volume of the solution decreases and the salinity (amount of salt present) increases.
Answer:
the water has greater salinity
Explanation:
:)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))()))))))))))))))))))))))))))))))))))))))))))))))))))))))
))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
find the one out of place
What is the air like in a tropical air mass?
Answer:
dense and humid
Explanation:
a_Zn(s) + _b_AgNOs(ag) -> c Zn(NO3)(20) + d Ag(s)
Which of the following equations properly expresses the relationship among R, S, and D as observed in the field experiments?
Answer:
c
Explanation:
Why do atoms bond?
a. Noble Gas Configuration b. Halogen Configuration c. Magnetic Configuration
Answer:
es la letra a)
Explanation:
síganme en insta