Answer:
[tex]\boxed {\boxed {\sf 4.6 \ Liters}}[/tex]
Explanation:
The pressure stays constant, so we are dealing with volume and temperature, so we use Charles's Law. This states the temperature and volume of a gas are directly proportional. The formula is:
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
We know the original balloon has a volume of 1.25 liters at a temperature of 23 degrees celsius. These values can be substituted in.
[tex]\frac{1.25 \ L}{23 \textdegree C}=\frac{V_2}{T_2}[/tex]
The new volume is unknown, but the temperature is increased to 85 degrees Celsius.
[tex]\frac{1.25 \ L}{23 \textdegree C}=\frac{V_2}{85 \textdegree C}[/tex]
We are trying to solve for the new volume, V₂. It is being divided by 85 degrees Celsius. The inverse of division is multiplication, so we multiply both sides by 85°C.
[tex]85 \textdegree C*\frac{1.25 \ L}{23 \textdegree C}=\frac{V_2}{85 \textdegree C}*85 \textdegree C[/tex]
[tex]85 \textdegree C*\frac{1.25 \ L}{23 \textdegree C}= V_2[/tex]
The units of degrees Celsius cancel.
[tex]85 *\frac{1.25 \ L}{23} = V_2[/tex]
[tex]4.61956522 \ L = V_2[/tex]
The original measurements have at least 2 significant figures, so our answer must have 2. For the number we found, that is the tenth place.
4.61956522The 1 in the hundredth place (in bold above) tells us to leave the 6 in the tenth place.
[tex]4.6 \ L \approx V_2[/tex]
The new volume of the balloon is approximately 4.6 liters.
Why are nonnative species a threat to biodiversity?
A. They often use up resources that other organisms need
B. They are not able to successfully breed in the wild
C. They release pollution into many environments
D. They easily contract and spread diseases to other organisms
Answer:
A. They often use up resources that other organisms need.
Explanation:
Invasive alien species are animals, plants, fungi and microorganisms entered and established in the environment from outside of their natural habitat. T
hey reproduce rapidly, out-compete native species for food, water and space, and are one of the main causes of global biodiversity loss.
Water in the bloodstream dissolves what?
what do you mean by this comment and ill tell you the answer there
Answer:
Water can dissolve any substance that contains charged particles (ions) or ... essential molecules within the bloodstream will depend on their solubility in water. Water serves to suspend the red blood cells to carry oxygen to the cells. It is the solvent for the electrolytes and nutrients needed by the cells, and also the solvent to carry waste material away from the cells. Water-based solutions like blood help carry molecules to the necessary locations. Thus, water's role as a solvent facilitates the transport of molecules like oxygen for respiration and has a major impact on the ability of drugs to reach their targets in the body.
Explanation:
PLEASEEEE HELP THIS IS SCIENCE
IGNORE THE QUESTIONS WHERE I ANSWERED, I GUESSED
Answer:
where is the answer??
Please do not just take the points without answering the question.
Top 3 ideas based upon affordability. Include a description of the general costs of this plan and why it is less expensive than others. Plssss helppppppp D:
Answer:
While the Affordable Care Act (ACA) has made health insurance more affordable for ... for the majority of Americans who have coverage through employer-based plans. ... Why Average Americans Cannot Afford Health Care ... Almost half of our nation's income goes to the top 10 percent of the population.
Explanation:
Here are three ideas based on affordability:
Public transportation
Meal planning and cooking at home
Renting textbooks
What is the defination of affordability?Public transportation: Using public transportation such as buses and trains can be a more affordable option compared to owning and maintaining a personal vehicle.
Meal planning and cooking at home: Eating out at restaurants or buying pre-made meals can be expensive, especially if done frequently. Planning meals ahead of time and cooking at home can be a more affordable option.
Renting textbooks: Instead of purchasing new textbooks for each class, consider renting textbooks for the duration of the semester. This can be a more affordable option than buying new textbooks, especially if the textbooks are only needed for a short period.
These ideas are generally less expensive because they involve reducing unnecessary expenses and finding more affordable alternatives. By using public transportation instead of owning a car, you can save on the cost of purchasing and maintaining a vehicle.
Similarly, by cooking at home and renting textbooks, you can avoid the cost of eating out at restaurants and buying new textbooks.
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Read the following sentences. Explain in your own words the meaning of the
italicized word or group of words. Write your response on the line below.
Answer:
the answer is in the photo hope it helps❤❤
(c) Read the sentences about the physical properties of metals.
What is the correct sentence?
#All metals have low melting points
#Some metals are gases at room temperature.
#All metals conduct heat.
#All metals are brittle
Answer:
all metals have low melting point
Calculate the new temperature when a container of
gas has a pressure of 795 mm Hg at 273 K and the
pressure is lowered to 358 mm Hg.
(Gay Lussac's Law) P1T2/P2T1
- 0.00165
- 246
- 123
- 606
Answer: The new temperature of container is 123 K.
Explanation:
Given: [tex]P_{1}[/tex] = 795 mm Hg, [tex]T_{1}[/tex] = 273 K
[tex]P_{2}[/tex] = 358 mm Hg, [tex]T_{2}[/tex] = ?
Formula used to calculate the new temperature is as follows.
[tex]\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}[/tex]
Substitute the values into above formula as follows.
[tex]\frac{P_{1}}{T_{1}} = \frac{P_{2}}{T_{2}}\\\frac{795 mm Hg}{273 K} = \frac{358 mm Hg}{T_{2}}\\T_{2} = 123 K[/tex]
Thus, we can conclude that the new temperature of container is 123 K.
Which of the following is an example of a nonmetal that is solid at room
temperature?
nitrogen
carbon
oxygen
bromine
Answer:
Carbon
Explanation:
At room temperature20–22 °C (68–72 °F), nitrogen and oxygen are gases, while bromine is a liquid.
The H3O+ ion concentration of a solution is 1 × 10–5 mole per liter. This solution is
A. acidic and has a pH of 5
B. acidic and has a pH of 9
C. basic and has a pH of 5
D. basic and has a pH of 9
The given [tex]H_3O^+[/tex] ion concentration of a solution is an acidic solution and has a pH of 5.
How does the pH scale measure?The letters pH stand for the potential of hydrogen since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance.The pH scale measures the relative acidity and alkalinity of solutions.It's a negative logarithmic scale of base ten that measures the potential of a solution to accept protons in the form of hydrogen ions.A pH scale ranges from 0 to 14 with 7 being neutral. A pH lower than 7 is considered acidic and a pH greater than 7 is considered basic (alkaline).What is the pH value of an [tex]H_3O^+[/tex] ion?pH can be calculated by using the following equation:
pH = -1(log[H3O+])
Where [H3O+] is the concentration of hydronium ions (hydrogen ions).
The concentration is given as 1 × [tex]10^-^5[/tex] mole per liter.
So, if [H3O+] = 1x[tex]10^-^5[/tex] mol/L,
then the pH = -1(log(1 × [tex]10^-^5[/tex] )) = 5
So, the pH of the given solution is 5. The value is less than 7. Hence it is considered an acidic solution.
Therefore, The given solution is an acidic solution with a pH of 5.
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6 moles of H2O is equal to how many molecules?
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.
What is mole?
The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)
number of moles of H[tex]_2[/tex]O= 6 moles
Substituting all the given values in the above equation, we get
number of atoms/molecules=6.022×10²³x6
number of atoms/molecules= 3.612x10²⁴molecules
Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.
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Light energy is captured by the green pigment ___________________________.
Answer:
Chlorophyll
Explanation:
chlo·ro·phyll
noun
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
A student claims that water's polarity is the reason it has a high specific heat.
What method could the student use to test his claim? (2 points)
Determine how dissolving salt in water affects the speccheat
Measure how much energy it takes to increase the temperature of water by one
degree
Perform research to see if other polar molecules have high specific heat
Mix water with an acid and test the new soeotic heat
Answer:
Perform research to see if other polar molecules have high specific heat
Explanation:
The specific heat of a substance is the amount of heat required to raise the temperature of a unit mass of the substance by 1°C.
In this question, the student is trying to establish a relationship between polarity and specific heat of substances. This claim can be tested by performing a research to see if other polar molecules have high specific heat.
If the research shows that a large number of other polar molecules have high specific heat, then the claim is confirmed to be true.
The volume of a gas is 22.4 L when the pressure of the atmosphere is 1.00 atm. If the pressure is increased to 1.05 atm, without changing the temperature, what is the new volume?
K = °C + 273
Question 13 options:
a)
22.4 L
b)
23.5 L
c)
25.2 L
d)
26.3 L
why would an electric vehicle be allowed to travel in the high occupancy vehicles lands with only one driver ?
Answer:
because it could self drive
Explanation:
idrk but thats my answer
What are the two limitations of earth plates
Answer:
The tectonic style and viability of modern plate tectonics in the early Earth is still debated. Field observations and theoretical arguments both in favor and against the uniformitarian view of plate tectonics back until the Archean continue to accumulate. Here, we present the first numerical modeling results that address for a hotter Earth the viability of subduction, one of the main requirements for plate tectonics. A hotter mantle has mainly two effects: 1) viscosity is lower, and 2) more melt is produced, which in a plate tectonic setting will lead to a thicker oceanic crust and harzburgite layer. Although compositional buoyancy resulting from these thick crust and harzburgite might be a serious limitation for subduction initiation, our modeling results show that eclogitization significantly relaxes this limitation for a developed, ongoing subduction process. Furthermore, the lower viscosity leads to more frequent slab breakoff, and sometimes to crustal separation from the mantle lithosphere. Unlike earlier propositions, not compositional buoyancy considerations, but this lithospheric weakness could be the principle limitation to the viability of plate tectonics in a hotter Earth. These results suggest a new explanation for the absence of ultrahigh-pressure metamorphism (UHPM) and blueschists in most of the Precambrian: early slabs were not too buoyant, but too weak to provide a mechanism for UHPM and exhumation.
Explanation:
The pH of an unknown strong acid is 2. What
is the hydronium ion concentration?
Answer: Finding the [H3O+] and pH of Strong and Weak Acid Solutions The larger the Ka, the stronger the acid and the higher the H+ concentration at equilibrium. hydronium ion, H3O+, 1.0, 0.00, H2O, 1.0×10−14, 14.00.
Explanation:The hydrogen ion in aqueous solution is no more than a proton, a bare ... the interaction between H+ and H2O .
What is the salt called when it is mixed with water?
Answer:
NaCI (salt) in water
Explanation:
After the salt compounds are pulled away apart the sodium chloride atoms are surrounded by water molecules. Once this happens we know that the salt is dissolved resulting in a homogeneous solution!
HOPE THIS HELPED!
Answer:
NaCI (salt) in water
Explanation:
took the quiz
Help with this, for my science class
Answer:
Spinal Cord
Explanation:
The spinal cord is part of the central nervous system.
The lungs are part of the respiratory system.
The heart is part of the cardiovascular system.
The pancreas is part of the digestive system.
if an atom has 4 protons, 5 neutrons, and 4 electrons, what would its atomic mass be?
Answer:
4
Explanation:
If I remember correctly, the atomic # will always be the same as the # of electrons
Help me please!!
Two gas samples are stored in a container with a solid barrier separating the gases. Gas A is at 125 °C, and Gas B is at 80 °C.
What will occur when the solid barrier is removed?
The molecules of Gas A will collide and mix with Gas B molecules. Gas A and Gas B molecules will all speed up. The final temperature will be greater than 125 °C.
The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will slow down, and Gas B molecules will speed up. The final temperature will be between 80 °C and 125 °C.
The molecules of Gas A will collide but not mix with Gas B molecules. There will be no changes in the temperature of either side of the container.
The molecules of Gas A will collide and mix with Gas B molecules. Gas A molecules will speed up, and Gas B molecules will slow down. The final temperature will be less than 80 °C.
can you please help me with this
Explanation:
TUU-PQVH-MFG LINK for them who truely interested in Paranormal and have any doubt on Paranormal
can someone answer dis:
3) When you take the atomic weight and subtract the atomic number, you are finding the number of __________ in the atom.
Answer:
If we subtract the atomic number from the atomic mass: atomic mass - atomic number = number of protons + number of neutrons - number of protons. Thus we get the number of neutrons present in an atom when we subtract the atomic number from the atomic mass.
Explanation: hope this helps???
Which equation shows the mathematical relationship between the frequency
and the period of a wave?
O A. T=2f
B. f = T-1
O C. T=1/f
O D. f =T
Answer:
c... just did it on a.pex
Answer:
O C. T=1/f
Explanation:
The period of a wave is the time taken for the wave to complete a cycle while the frequency of a wave is the number of cycles completed per unit time.
The period (T) is the inverse of frequency (f) and vice versa.
Hence mathematically, i can write;
T=1/f
Select the correct structure that
corresponds to the name.
2,2-dimethyl-3-hexyne
A. CH3CH2C=CC(CH3)3
B. CH3CH(CH3)C = CCH(CH3)2
C. both
Answer: A
Explanation:
The correct structure of the name of the compound given is CH₃CH₂C=CC (CH₃)₃.
What is 2,2-dimethyl- 3- hexyne?Dimethyl hexyne is an organic compound. Its chemical formula is C8H14. The compound hexyne is used to make a complex compound, agrochemical, and pharmaceutical compounds.
Thus, the correct option is A, CH₃CH₂C=CC (CH₃)₃.
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A gas tank contains 3 gases (N2, O2, CO2). The total pressure of the gases is 825 mmHg. If the pressure of CO2 in 125 mmHg and the pressure of O2 is 350 mmHg, what is the partial pressure of N2 gas?
Answer:350 mmHg
Explanation:
use Dalton’s law:
P Total = P gas 1 + P gas 2 + P gas 3
825= P1+ 350+ 125
350+125=475
825-475= 350
P1= 350 mmHg
3. If a gas has a pressure of 32.1 psi at a temperature of 25°C, then what is the new pressure if the temperature is increased to 75°C?
Answer:
P2 = 37.5 psi
Explanation:
P1 = 32.1 psi
T1 = 25°C + 273 = 298K
T2 = 75°C + 273 = 348K
P2 = ?
P1/T1 = P2/T2
or
P2 = (T2/T1)P1
= (348K/298K)(32.1 psi)
= 37.5 psi
Definition: This is a force which resists all motion.
Example: the lower panels on the space shuttle heat up due to this during re-entry through the
atmosphere
Answer:
The vocab word is Friction.
hope this helps :)
Explanation:
8). How many moles of oxygen gas must be placed in a 35.0 L container in order
to exert a pressure of 2.80 atmospheres at 15.0°C?
Answer:
4.1 moles
Explanation:
Applying
PV = nRT................ equation 1
Where P = pressure, V = volume, n = number of moles, R = molar gas constant, T = Temperature.
make n the subject of the equation
n = PV/RT.............. Equation 2
From the question,
Given: V = 35 L , P = 2.8 atm, T = 15 °C = (15+273) = 288 K, R = 0.083 L.atm/K.mol
Substitute these values into equation 2
n = (35×2.8)/(0.083×288)
n = 4.1 moles
which of the following is a product in the chemical equation N + O2 = NO2
1. NO2
2. N
3. O
4. O2
When carbon disulfide, CS2, forms from its elements. Heat is absorbed. How much heat would be required to produce 5.0 moles of carbon disulfide
Answer:
5.9 × 10² kJ
Explanation:
When carbon disulfide, CS₂, forms from its elements, heat is absorbed. The corresponding value for the standard enthalpy of formation of carbon disulfide is 117.36 kJ/mol. The thermochemical equation that represents this process is:
C(graphite) + 2 S(s, rhombic) ⇒ CS₂(g) ΔH°f = 117.36 kJ/mol
117.36 kJ of heat are absorbed when 1 mole of CS₂ is formed. The amount of heat absorbed when 5.0 moles of CS₂ are formed is:
5.0 mol × 117.36 kJ/mol = 5.9 × 10² kJ