Answer:
The partial pressure of an individual gas is equal to the total pressure multiplied by the mole fraction of that gas.
pls do in 1 hour!!!!!!!
Answer:
c) burrow underground
a) false
a) save rain water
c) prevent animals eating it
Instead of leaves, most cacti have spines or scales (which are modified leaves). These spines and scales do not lose water through evaporation (unlike regular leaves, which lose a lot of water). The spines protect the cactus from predators (animals that would like to eat the cactus to obtain food and/or water).
b) false
What abiotic factors do humans need?
The most important abiotic factors include water, sunlight, oxygen, soil and temperature. Water (H2O) is a very important abiotic factor – it is often said that “water is life.” All living organisms need water. In fact, water makes up at least 50% of almost all living things
Consider the following claim: Group behavior can increase the chances for an individual and a species to survive and reproduce.
Identify evidence from the lesson that supports this claim. Use specific examples to explain the cause-and-effect relationship between particular group behaviors and an individual’s survival.Then, identify an additional, reputable source that provides evidence to further support this claim. Use this additional evidence to draw a conclusion about the role of group behavior in individual and species’ survival. Provide a link to the source at the bottom of your response. ill give brainliest
Answer:
dont know but i went to the store td and i bought some food then after i ate it i had to use the bathroom n i fell on my way there and it hurt
Explanation:
(Many social behaviors of animals are adaptive, meaning that being social ultimately increases an animal's fitness — its lifetime reproductive success. One example of how social behavior is adaptive is aggregation against predators.)
What is the mass in grams of a sample of 1.73 x 10^22 molecules of
N^20^5?
Do not report units in your answer. Report your answer with two
places past the decimal point.
Answer:
the answer is 5
Explanation:
if you add 5% divided by 3 = 15%.
So if you add all of those plus the 30% you will be getting 45%.
Determine how many ml of water you need to remove, by evaporation, if you have a 500 ml of 10.20 M HNO3 dilute solution and you need to make it a 12 M HNO3 stock solution.
The total volume of water that would be removed will be 75 mL
Dilution equationUsing the dilution equation:
M1V1 = M2V2
In this case, M1 = 500 mL, V1 = 10.20 M, M2 = 12 M
Substitute:
V2 = 500 x 10.20/12
= 425 mL
The final volume in order to arrive at 12 M HNO3 would be 425 mL from the initial 500 mL. Thus, the total amount of water that will be removed by evaporation can be calculated as:
500 - 425 = 75 mL
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Typically the role of the “masses” – the town’s people in this case – serve largely as an antagonist in a story. Either they initiate trouble or they latch on and carry it along. Analyze the characterization/role of the town’s people in the story and how they affect the outcome of the story
Answer:
i believe its the role of the antagonist
Explanation:
What quantity of heat (in kJ) would be required to convert 15.1 g of ice to water at 0.00°C? (∆Hfus = 6.01 kJ/mol for water)
for the answer I got 5.04, I don't know if it is correct
if it's correct, how would the process change if celsius was not zero, or does nothing change.
The quantity of heat required to convert the ice to water is 5048.4 J.
Quantity of heat requiredThe quantity of heat required to convert the ice to water is calculated as follows;
Q = n∆Hfus
where;
n is the number of moles of the ice∆Hfus is heat of fusion = 6.01 kJ/molNumber of moles of the iceThe number of moles of the ice is calculated as follows;
n = m/M
where;
M is molar mass of water (H2O) = 18 g/mol
n = 15.1/18
n = 0.84 mole
Q = 0.84 x 6.01 x 10³
Q = 5048.4 J
Thus, the quantity of heat required to convert the ice to water is 5048.4 J.
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How many moles of Cu(OH)2 will be produced if given 1 mole
KOH.
Answer:
0.032 mole
Explanation:
Please mark me as brainliest
What is the frequency of a wave with a speed of 45 m/s and a wavelength of 2.5 m?
Answer:
frequency of the wave f=4 Hz
mention one metal that doesn't burn or form oxide when heated in air
Answer:
Gold, Platinum, Silver, Ruthenium
Balance this equation:
C₂H₂ + O₂
---->
CO2 + H2O
Answer:
Balance The Equation: C2H2 + O2 = CO2 + H2O
1. Label Each Compound With a Variable
aC2H2 + bO2 = cCO2 + dH2O
2. Create a System of Equations, One Per Element
C: 2a + 0b = 1c + 0d
H: 2a + 0b = 0c + 2d
O: 0a + 2b = 2c + 1d
3. Solve For All Variables (using substitution, gauss elimination, or a calculator)
a = 2
b = 5
c = 4
d = 2
4. Substitute Coefficients and Verify Result
2C2H2 + 5O2 = 4CO2 + 2H2O
L R
C: 4 4 ️
H: 4 4 ️
O: 10 10
How many unpaired electrons are found in a ground state atom of Os?
Answer:
two unpaired electrons
Explanation:
each of which are located in a different pi* antibounding orbital.
what is one advantage of doing a feild experiment instead of a laboratory experiment
Answer:
Field experiments can often have the potential to give scientists opportunities that are not possible in a lab setting.
Explanation:
Having people "act natural" in a lab setting is impossible to truly achieve, as we all know what happens to our mental state and behavior when we are being actively observed. This is also especially helpful when conducting wildlife research, as there are a myriad of different things influencing animal and plant behavior that would be nigh impossible to recreate perfectly in a controlled lab setting.
Field research can have its disadvantages as well, as it is very hard to only have one thing change (make an independent variable) in a wild environment with ever-changing weather, social effects, etc. Also, you, as the researcher, as causing an impact on the very location that you are observing, which can alter your results in unpredictable ways.
The thing to remember is that each type of study has its advantages and disadvantages; if they didn't, then we'd all do the same type of research! You have to weigh your research options and figure out which one works best for your situation :)
The purpose of this guide is to help you write a clear and concise report that summarizes the lab I just completed. This lab showed me how water carries rocks to a new location. For instance how the first model showed how a stream would act with light drizzle to downpour as I saw the outcomes were all if not completely then partially different I read the information that was given to me before I started each lab lesson and went on from there. Just say something that you think you could have done better in two to three sentences
topic: kentic energy
100 points for whole thing
Answer:
The purpose of this guide is to help you write a clear and concise report that summarizes the lab I just completed. This lab showed me how water carries rocks to a new location. For instance how the first model showed how a stream would act with light drizzle to downpour as I saw the outcomes were all if not completely then partially different
I read the information that was given to me before I started each lab lesson and went on from there.
Explanation:
:)
i need help with this question
Answer:
the difference between model A and model B is the fact that model A has more atoms in it, and they are smaller and all the same type while model B has less atoms, they are bigger and there are different types of atoms.
Explanation:
mr clean
For the reaction 2 NO₂(g) ⇌ 2 NO(g) + O₂(g) Kp = 1.11 × 10⁻⁵ at 200 °C. A 2.50 L vessel at 200 °C is filled with NO₂(g) at an initial pressure of 4.00 atm and allowed to come to equilibrium. What will be the pressure (in atm) of NO(g) at equilibrium?
The equilibrium pressure of NO is 2.14 atm.
What is equilibrium constant?The equilibrium constant is a numerical value that shows the extent to which reactants are converted into products. We have the reaction 2NO₂(g) ⇌ 2 NO(g) + O₂(g).
We have to set up the ICE table
From PV = nRT
P = nRT/V = 4 * 0.082 * 473/2.5 = 62 atm
2NO₂(g) ⇌ 2 NO(g) + O₂(g)
I 62 0 0
C -x +2x +x
E 62 - x 2x x
Kp = pNO^2 * pO2/pNO2^2
1.11 × 10⁻⁵ = (2x)^2 (x)/(62 - x)^2
1.11 × 10⁻⁵(62 - x)^2 = 4x^3
1.11 × 10⁻⁵(3844 - 124 + x^2) = 4x^3
0.04 - 0.0014x + 1.11 × 10⁻⁵x^2 = 4x^3
4x^3 - 1.11 × 10⁻⁵x^2 + 0.0014x - 0.04 = 0
x = 0.107 atm
Since;
pNO = 2x = 2(0.107) = 2.14 atm
The equilibrium pressure of NO is 2.14 atm.
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Both bromous acid (HBrO2) and hypobromous acid (HBrO) are weak acids. In both molecules, the hydrogen atom is bound to _______. Yet, the bond is more polar in ______, which makes it a stronger acid.
The polarity of HBrO2 is greater than that of HBrO hence HBrO2 is a stronger acid than HBrO .
What is an acid?According to the Arrhenius definition, an acid is any sustenance that produces hydrogen ions as the only positive ion in solution. In both molecules we can see that hydrogen is bonded to electronegative oxygen atoms.
The bond is more polar in HBrO2 and as a result of this, the molecule, HBrO2 is a stronger acid than HBrO.
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The average annual return from stock investments historically is:
a) 11.3%
b) 12%
C) 12.5%
d) 20%
Answer:
11.3%
Explanation:
The stock market’s average annual return through history is 11.3%, which is more than most savings accounts pay.
Uneven heating of Earth creates global wind systems. How does that impact climate?
Answer:
Unequal heating of the Earth’s surface forms large global wind patterns.Large global wind systems are created by the uneven heating of the Earth’s surface. These global wind systems, in turn, drive the oceans’ surface currents.Explanation:
Hope this helps
A constantly changing and developing resume means that you are always _______________ as a person and potential employee. A. changing and developing B. failing C. succeeding D. remaining the same
If there are 1652 kJ of bond energy in methane, how much energy is there in a single Carbon - Hydrogen bond?
The energy in a single Carbon - Hydrogen (C-H) bond of methane is 413 kJ
Bond energyFrom the question, we are to determine the Carbon - Hydrogen bond energy in methane
From the given information,
The total bond energy in a molecule of methane is 1652 kJ
C-H bond energy = [tex]\frac{Total\ bond\ energy\ in\ methane}{number\ of \ C-H \ bonds}[/tex]
Number of C-H bonds in methane = 4
Therefore,
C-H bond energy = [tex]\frac{1652}{4}[/tex]
C-H bond energy = 413 kJ
Hence, the energy in a single Carbon - Hydrogen (C-H) bond of methane is 413 kJ
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The Linnaean system of classification sorts organisms into groups using a hierarchical system of levels.
List the following terms correctly in the Linnaean classification system from the most general to the most specific.
Order
Phylum
Species
Kingdom
Genus
a. How many moles of CO2 are produced in 19.63 grams of CO2?
Answer:
0.44604005953260284 moles
Explanation:
or you could round it to 0.446 moles
mol CO₂ = mass : molar mass CO₂
mol CO₂ = 19.63 : 44 g/mol = 0.446
Calculate the solubility (in g / L) of a generic salt with a formula of A2B, a Ksp of 4.30 × 10−11 and a molar mass of 274 g / mol.
With a Ksp of 4.30*10−11 and a molar mass of 274 g / mol the solubility (in g / L) of the generic salt is mathematically given as
S=0.0604g/l
What is the solubility (in g / L) of the generic salt?Generally, the Ksp is mathematically given as
Ksp=4s^3
Therefore
s=(\frac{4.30 × 10−11}{4})^{1/3}
s=2.207×10^{−4]
In conclusion, solubility is
S=2.207×10^{−4]*274
S=0.0604g/l
Read more about Molarity
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Which of the following is the only genotype not able to taste PTC.
a. IT
b. Tt
c. tt
How many grams of NH3 can be produced from 12.0g of H2?
Answer:
Balanced reaction:
3 H2 (g) + N2 (g) → 2 NH3 (g)
Use stoichiometry to convert g of H2 to g of NH3. The process would be:
g H2 → mol H2 → mol NH3 → g NH3
12.0 g H2 x (1 mol H2 / 2.02 g H2) x (2 mol NH3 / 3 mol H2) x (17.03 g NH3 / 1 mol NH3) = 67.4 g NH3
Explanation: See above
Hope this helps, friend.
Dissolve 30 g of sodium sulphate into 300 mL of water
determine the number of moles of sodium sulphate in the solution
Answer:
number of moles = 0.21120811
Explanation:
To find the number of moles, given the mass of the solute, we use the formula:
[tex]\mathrm{n = \dfrac{ m }{ M } }[/tex]
[tex]\mathrm{n = number\:of\:moles\:(mol)}[/tex]
[tex]\mathrm{m = mass\:of\:solute\:(g)}[/tex]
[tex]\mathrm{M = molar\:mass\:of\:solute\:( \dfrac{ g }{ mol } )}[/tex]
Label the variables with the numbers in the problem:
[tex]\mathrm{n =\:?}[/tex]
[tex]\mathrm{m =30\:g }[/tex]
[tex]\mathrm{M =\:?\:Calculate\:the\:molar\:mass }[/tex]
The first thing we have to do is find the molar mass of sodium sulfate, in order for us to use the formula for finding the number of moles:
Formula for finding the molar mass of sodium sulfate:
[tex]M({ \left Na \right }_{ 2 } { \left So \right }_{ 4 }) = m \left( Na \right) +m \left( S \right) +m \left( O \right)[/tex]
For the variables and what they mean are below for finding the molar mass of sodium sulfate:
[tex]\mathrm{M =molar\:mass }[/tex]
[tex]\mathrm{m =moles=2\:moles\:for\:Na\:,1\:mole\:for\:S,\:and\:4\:moles\:for\:O}[/tex]
[tex]\mathrm{Na =sodium=22.99\:g }[/tex]
[tex]\mathrm{S =sulfur=32.06\:g }[/tex]
[tex]\mathrm{O =oxygen=16.00\:g }[/tex]
Plug the numbers into the formula, to find the molar mass of sodium sulfate:
[tex]M({ \left Na \right }_{ 2 } { \left So \right }_{ 4 }) = m \left( Na \right) +m \left( S \right) +m \left( O \right)[/tex]
[tex]\mathrm{Substitute\:the\:values\:into\:the\:formula}[/tex]
[tex]M = 2 \left( 22.99 \right) +1 \left( 32.06 \right) +4 \left( 16.00 \right)[/tex]
[tex]\mathrm{Multiply\:2\:by\:22.99\:to\:get\:45.98\:and\:1\:by\:32.06\:to\:get\:32.06}[/tex]
[tex]\mathrm{M = 45.98+32.06+4\:(16)}[/tex]
[tex]\mathrm{Multiply\:4\:by\:16\:to\:get\:64}[/tex]
[tex]\mathrm{M = 45.98+32.06+64}[/tex]
[tex]\mathrm{Add\:45.98\:and\:32.06\:to\:get\:78.04}[/tex]
[tex]\mathrm{M = 78.04+64}[/tex]
[tex]\mathrm{Add\:78.04\:and\:64\:to\:get\:142.04}[/tex]
[tex]\mathrm{M = 142.04}[/tex]
Now that we have found the molar mass, we can calculate the number of moles in the solution of sodium sulfate with the formula:
[tex]\mathrm{n = \dfrac{ m }{ M } }[/tex]
[tex]\mathrm{n =\:?}[/tex]
[tex]\mathrm{m =30\:g }[/tex]
[tex]\mathrm{M = 142.04\:g/mol}[/tex]
[tex]\mathrm{Substitute\:the\:values\:into\:the\:formula}[/tex]
[tex]\mathrm{n = \dfrac{ 30 }{ 142.04 }}[/tex]
[tex]\mathrm{Divide\:142.04\:by\:30\:to\:get\:0.21120811}[/tex]
[tex]\mathrm{n = 0.21120811}[/tex]
0.21120811 rounded gives you 0.2112
or if you did the problem without decimals
30 grams of sodium sulfate divided by its molecular weight – which we found to be 142 – gives us a value of 0.2113 moles.
What factors mechanical weathering ?.
Earth Science.
Answer:
-Growth of plants on the rock.
-Temperature and pressure changes in nature.
-Freezing and thawing of water in cracks of the rock.
-Formation of salt crystals within the rock.
-Burrowing by animals.
those are some factors I know
hope this helped you
write a homologous series containing -CHO as a functional group
Answer: The members of homologous series are
HCHO,CH3CHO,C2H5CHO,C3H7CHO .
The members of the homologous series containing -CHO as a functional group is HCHO,CH₃CHO,C₂H₅CHO,C₃H₇CHO .
What is a functional group?Functional group is defined as a substituent or group of toms or an atom which causes chemical reactions.Each functional group will react similarly regardless to the parent carbon chain to which it is attached.This helps in prediction of chemical reactions.
The reactivity of functional group can be enhanced by making modifications in the functional group .Atoms present in functional groups are linked to each other by means of covalent bonds.They are named along with organic compounds according to IUPAC nomenclature.
Functional group inter conversion is also possible by retro -synthesis.In some cases , functional groups can be charged molecules.
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If you repeated this experiment with a different concentration of hydroxide ion, would
you expect to find the same order with respect to crystal violet or a different one?
Briefly explain.
We see the order with respect to crystal violet (m),but no longer the order with respect to hydroxide (n).
Concentration of hydroxide ion equationGenerally the equation for the chemical reaction is mathematically given as
(CV)+(aq) + (OH)-(aq) ------------>. CVOH(aq)
The rate law for the chemical reaction is given as
Rate = k[CV+]m[OH-]n,
Because the hydroxide ion conc is an extra of thousand times as massive as the conc of crystal violet, [OH–] will now not exchange drastically all through this experiment.
Therefore, you will find the order with respect to crystal violet (m),but no longer the order with admire to hydroxide (n).
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which of the following spheres is likely to represent a metal atom? WHich
Answer:
Metals lose electrons when reacting with nonmetals, so the red sphere represents a metal.