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 I dilute 250 mL of 0.50 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?
Answer:
The right answer is "0.17 M".
Explanation:
The given values are:
Volume,
V₁ = 250 mL
V₂ = 750 mL
Molarity,
M₁ = 0.50 M
M₂ = ?
As we know,
⇒ [tex]M_1 V_1=M_2 V_2[/tex]
or,
⇒ [tex]M_2=\frac{M_1 V_1}{V_2}[/tex]
On substituting the values, we get
⇒ [tex]=\frac{0.50\times 250}{750}[/tex]
⇒ [tex]=\frac{125}{750}[/tex]
⇒ [tex]=0.17 \ M[/tex]
A graph of gas pressure versus the number of particles in a container is a straight line. Which other relationship will have a similar graph? volume versus pressure, because they are also directly proportional volume versus temperature, because they are also directly proportional volume versus pressure, because they are also inversely proportional volume versus temperature, because they are also inversely proportional
Answer:
b
Explanation:
gitcy is good for your spleen
The other relationship that will have a similar graph is volume versus temperature, because they are also directly proportional according to Charles's Law.
What is Charles's Law?Charles's Law is a gas law that states that the volume of a fixed mass of gas at a constant pressure is directly proportional to its absolute temperature.
This means that as the temperature of a gas increases, the volume of the gas will also increase proportionally, and as the temperature of a gas decreases, the volume of the gas will decrease proportionally.
Therefore, if a graph of gas pressure versus the number of particles in a container is a straight line, a graph of volume versus temperature will have a similar shape and be directly proportional, because they are both affected by changes in temperature.
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. What is the molarity of 5.30 moles of NaCl dissolved in 0.400 L of solution?
Answer:
13.25 M
Explanation:
Molarity is moles over liters so simply plug your values in as such:
5.30 mol ÷ 0.400 L = 13.25 M
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
Help me with this please
Answer:
–253.5 °C
Explanation:
We'll begin by calculating the number of mole in 6 g of CO₂. This can be obtained as follow:
Molar mass of CO₂ = 12 + (2×16)
= 12 + 32
= 44 g/mol
Mass of CO₂ = 6 g
Mole of CO₂ =.?
Mole = mass / molar mass
Mole of CO₂ = 6 / 44
Mole of CO₂ = 0.136 mole
Next, we shall convert 225 mL to L.
1000 mL = 1 L
Therefore,
225 mL = 225 mL × 1 L / 1000
225 mL = 0.225 L
Next, we shall determine the temperature of the gas. This can be obtained as follow:
Pressure (P) = 0.855 atm
Volume (V) = 0.225 L
Number of mole (n) = 0.136 mole
Gas constant (R) = 0.0821 atm.L/Kmol
Temperature (T) =?
PV =nRT
0.855 × 0.255 = 0.136 × 0.0821 × T
0.218025 = 0.0111656 × T
Divide both side by 0.0111656
T = 0.218025 / 0.0111656
T = 19.5 K
Finally, we shall convert 19.5 K to degree celsius (°C). This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 19.5 K
T(°C) = 19.5 – 273
T(°C) = –253.5 °C
Therefore, the temperature of the gas is –253.5 °C
ЗKOH + H3PO4=K3PO4 + 3H2O
what is the reaction
Answer: The given reaction is a neutralization reaction.
Explanation:
When an acid chemically reacts with a base then it leads to the formation of salt and water.
For example, [tex]3KOH + H_{3}PO_{4} \rightarrow K_{3}PO_{4} + 3H_{2}O[/tex]
Here, KOH is a the base and [tex]H_{3}PO_{4}[/tex] is an acid which on chemical reaction with each other leads to the formation of salt [tex](K_{3}PO_{4})[/tex] and water [tex](H_{2}O)[/tex].
Thus, we can conclude that the given reaction is a neutralization reaction.
Which of the following statements is true?
Mushrooms and algae are part of the fungi group.
Fungi are a special type of plant.
Fungi can feed off both living and dead organisms.
Fungi can make their own food using photosynthesis.
Answer:
Mushroom and algae are part of the fungi group
What are three similarities between biotic and abiotic factors?
i will give brainliest if you help me out !!!
Suppose Earth was tilted much less on its axis. What effect would this have on the planet? Please help me !
Answer:
If Earth was tilted much less on its axis, it would lead to minor changes in precipitation and temperatures as Earth moves slightly towards and away from the sun.
Explanation:
If a planet tilts more, it leads to colder winters and warmer summers. However, if a planet tilts less, it leads to less severe seasons that is and milder winters and cooler summers.
If Earth was tilted much less on its axis, it would lead to minor changes in precipitation and temperatures as Earth moves slightly towards and away from the sun.
2. C + S → CS2
Reaction Type:
25) In a certain area where there are many farms, the groundwater levels have dropped by as much as 10 m over a period of 30 years. The main cause behind this is MOST LIKELY
A) the evaporation of water from aquifers.
B) the excessive pumping of water through wells.
C) the leakage of fertilizers from the farms into the aquifer.
D) the construction of a dam to divert water into a reservoir.
NO LINKS!!!
I will give Brainliest to 1st right answer!
Answer:
I a, answering so the other dude can get brainily oh and yeah its b
Explanation:
The excessive pumping of water through well is the major reason for the drop of ground water level. The nearby farms over use water and pumps from undergrounds.
What is underground water?Water beneath the earth surface is called ground water. The storage of ground water is a very important in all areas to sustain our need for water and it must be maintained pure without the presence of overdose of heavy metals and other impurities.
Reduction in the level of ground water storage is a serious issue that might leads to a scenario where the drinking water is not sufficient. The uncontrolled use of pump water by factories, industries and farms results in the drop of ground water level.
The nearby farms might pumping water from sources uncontrollably in the area. That is the main reason of dropping in ground water level. Hence, option B is correct.
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Explain why there would be a need for lithium batteries?
Answer:
The much higher power density offered by lithium ion batteries is a distinct advantage. Electric vehicles also need a battery technology that has a high energy density. ... Lithium ion cells is that their rate of self-discharge is much lower than that of other rechargeable cells such as Ni-Cad and NiMH forms.
Put this into your own words or teachers will make you redo it
How long does it take for fruit flies to develop from embryos to adults?
100 pointts pls answer quick and no link :In the reaction, Hydrogen + Iodine --> Hydrogen Iodide at equilibrium, some Iodine is is added. What happens to the equilibrium?
Answer:
the concentration of hydrogen iodide will be higher than it was in the original equilibrium conditions.
Which indicator would tell scientists the most about future climate change
Speed is the rate of change of position expressed as _____ traveled per unit of time. A. direction B. meter C. displacement D. distance
Answer. Speed is the rate of change of position expressed as distance travelled per unit of time
give brainliest if right
Answer:
distance
Explanation:
Wat two common uses for Zinc???
Answer:
Zinc oxide is used in the manufacture of many products such as paints, rubber, cosmetics, pharmaceuticals, plastics, inks, soaps, batteries, textiles and electrical equipment.
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
Which model could represent a neutral atom of nitrogen
Answer:
The answer is c.1. The atomic number of nitrogen is 7.
The electron arrangement of nitrogen is 2.5. With that said, atom 1 resembles the neutral atom of nitrogen because the innermost shell of the atom contains 2 electrons while the outermost shell of the atom contains 5 electrons.
The model that could represent a neutral atom of nitrogen is the first one. Thus, the correct option is C.
What is a Nitrogen atom?A nitrogen atom may be defined as a chemical element with an atomic number of 7 and an atomic mass of 14. It contains seven protons in its nucleus.
Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table. Being neutral, the number of protons that it has in its nucleus must be equal to that of the surrounding electron. Hence, the number of electrons are seven.
These seven electrons are only visible in the first model. Thus, the correct option for this question is C.
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What is the molarity of a solution where one mole of NaOH is added to 2000mL of water
Answer:
Molarity of a solution where one mole of NaOH is added to 2000mL of water is 0.0005
Explanation:
Molarity is the equal to number of moles of solute divided by total volume of solvent
Given -
Number of moles of solute i.e NaOH = 1
Total volume of solvent i.e water = 2000 mL
Molarity [tex]\frac{1}{2000} = 0.0005[/tex]
how can a chemical reaction be compared to shuffling a deck of cards?
Answer:
The cards (matter) can be rearranged constantly, placed with others, the total or resent amount remains constant.
Explanation:
A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.
What is chemical reaction ?A chemical reaction is a procedure that causes one group of chemical components to change chemically into another.
We can learn about a substance's qualities by studying chemical reactions. We can learn about a substance's chemical characteristics by looking at how it interacts with other substances. These characteristics can be utilized to recognize an unidentified sample.
When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.
Thus, A chemical reaction be compared to shuffling a deck of cards then the cards can be rearranged constantly, the total amount remains constant.
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The volume of a gas at 4.50 atm is 1.90 L, if the pressure of the gas is increased to 6.70 atm, what is the new
volume? In this problem, V2 =
tje new preasure is 10.7l
How can genetic mutations be passed to offspring?
A. In sex cells
B. In body cells
C. Through environmental factors
D. Through animal transmission factors
Answer:
I think the answer is b
Explanation:
I hope this helps
Which of the following statements describes how humans would be affected if the ozone layer of Earth’s atmosphere were very damaged?
A. People would not spend as much time indoors.
B. The amount of food people eat each year would increase.
C. Human skin would burn much faster even with less exposure to sunlight.
D. Plants and flowers would grow much larger and produce more oxygen for people to breathe.
i thank its B my big brother helped me we thank its b
The temperature of 170 g of a material decreases by 20.0⁰C when it loses 3050 J of heat. What is its specific heat
Answer:
0.897 J/g.⁰C
Explanation:
Given the following data:
m = 170 g (mass)
ΔT = 20.0⁰C (change in temperature)
q = 3050 J (amount of heat)
The amount of heat (q) is calculated as follows:
q = m x Cp x ΔT
Thus, we introduce the data in the mathematical expression to calculate the specific heat (Cp):
Cp = q/(m x ΔT) = 3050 J/(170 g x 20.0⁰C) = 0.897 J/g.⁰C
One is a negative environmental consequence of surface mining?
Answer:
Surface mining (also known as "strip mining") has the potential to significantly erode soil fertility, pollute waters, deplete underground water sources, scar or altar the landscape, damage roads, houses, and other buildings, and kill wildlife.
help help help help help
What is an action your citizens can take to prevent water waste?
In balancing a chemical equation, which of the following are you allowed to do?
A) change coeffecients
B) change superscripts
C) change subscripts
D) add new substances
Answer:
Change Coefficients
Thank you
Identify the gas law that applies to the following scenario: If a gas in a closed container is pressurized from 18.0 atm to 14.0 atm and its original
temperature was 35.0°C, what would the final temperature of the gas be?
Charles' Law
O Avogadro's Law
O Boyle's Law
O Gay-Lussac's Law
Answer:
Gay-Lussac's Law
Explanation:
The pressure is directly proportional to the absolute temperature under constant volume. This states the Gay-Lussac's law. The equation is:
P1T2 = P2T1
Where P is pressure and T absolute temperature of 1, initial state and 2, final state of the gas.
That means the right option is:
- Gay-Lussac's Law
A nuclide is defined as?
Answer:
Nuclide, , also called nuclear species, species of atom as characterized by the number of protons, the number of neutrons, and the energy state of the nucleus. ... The term nuclide is not synonymous with isotope, which is any member of a set of nuclides having the same atomic number but differing mass number.
Explanation:
Answer:
a distance isotope of an atom
Explanation: