Answers
Answer:
365 days
Explanation:
You've made a slight mistake. The sun doesn't go around the Earth, the Earth goes around the Sun. It takes 365 1/4 days to go around the Sun, but it is usually rounded to 365.
Related Questions
办理教留服学位学历认证Q/微29304199美国堪萨斯KU毕业证文凭学位证书offer操办堪萨斯留信认证成绩单
Answers
办理教留服学位学历认证Q/微29304199美国堪萨斯KU毕业证文凭学位证书offer操办堪萨斯留信认证成绩单 what欧式
Answer:
办理教留服学位学历认证Q/微29304199美国堪萨斯KU毕业证文凭学位证书offer操办堪萨斯留信认证成绩单
A space air is at a temperature of 75 oF, and the relative humidity (RH) is 45%. Using calculations, find: (a) the partial pressures of the dry air and water vapor, (b) the humidity ratio of the moist air, and (c) the specific volume of the moist air. Assume standard sea-level pressure.
Answers
Answer:
A) Partial Pressure of dry air = 13.32 KPa
Partial Pressure of water vapour = 1.332 KPa
B) Humidity ratio; X = 0.0691
C) V_p = 0.8384 m³/Kg
Explanation:
A) We are given;
Temperature = 75°F
Relative Humidity = 45%
Now,to calculate the partial pressure, we will use the relationship;
Relative Humidity = (Partial Pressure/Vapour Pressure) × 100%
Making partial pressure the subject;
Partial Pressure = Relative Humidity × Vapour Pressure/100%
From the first table attached, at temperature of 75°F, the vapor pressure is 29.6 × 10^(-3) bar = 29.6 KPa
Thus;
Partial Pressure of dry air = (45 × 29.6)/100
Partial Pressure of dry air = 13.32 KPa
From online values, vapour pressure of water vapour at 75°F = 2.96 KPa
Thus;
Partial Pressure of water vapour = (45 × 2.96)/100 = 1.332 KPa
B) humidity ratio of moist air is given as;
X = 0.62198 pw / (pa - pw)
where;
pw = partial pressure of the water vapor in moist air
pa = atmospheric pressure of the moist air
Thus;
X = (0.62198 × 1.332)/(13.32 - 1.332)
X = 0.0691
C) Formula for moist air specific volume is;
V_p = (1 + (xRw/Ra) × RaT/p
Where;
V_p is specific volume
T is temperature = 75°F = 297.039 K
p is barometric pressure which in this case is standard sea level pressure = 101.325 KPa
pw is partial pressure of the water vapor in moist air = 1.332 KPa
Rw is individual gas constant for water = 0.4614 KJ/Kg.K
Ra is individual gas constant for air = 0.2869 KJ/Kg.K
V_p = (1 + (0.0691 * 0.4614/0.2869)) × 0.286.9 * 297.039/101.325
V_p = 0.8384 m³/Kg
How many moles of carbon atoms do you have if you have 48.4 g of carbon?
Answers
Answer:
4.03 moles
Explanation:
We know that the molar mass of Carbon is 12.011, thus we can solve for moles by dividing the grams given by the molar mass.
48.4 g / 12.011 g = 4.03 moles
10 examples of elimination reaction
Answers
Answer:
1. Dehydration of alcohols
2. Dehydrohalogenation of alkyl halides
3. Decarboxylation of carboxylic acids
4. Pyrolysis of esters
5. Deamination of amino acids
6. Dealkylation of ethers
7. Dehalogenation of aryl halides
8. Dehydration of amides
9. Dehydrogenation of alkanes
10. Dehydrogenation of alkenes.
Explanation:
2CaO + =2Ca(OH)with a subscript of 2 Please help me figure out the middle to get the answer Please help.
Answers
The given chemical reaction can be completed with 2 CaO + H₂O =
2Ca( OH)₂ is the complete form.
What is the simplest definition of a chemical reaction?A process in chemistry in which one or more substances, known as the reactants, are transformed into one or more distinct substances, known as the products. Compounds or chemical elements make up substances.
What kinds of chemical reactions are there?Combination, decomposition, single-replacement, double-replacement, and combustion are the five fundamental types of chemical reactions. You can classify a reaction into one of these categories by analyzing its reactants and products.
Learn more about chemical reaction:
brainly.com/question/25769000
#SPJ1
Which seasons in Atlanta GA have worst AQI
Answers
In Atlanta, GA, certain seasons are associated with poorer air quality due to various factors such as weather conditions, human activities, and geographical location.
Typically, the seasons with the worst AQI in Atlanta, GA, are summer and early fall. This is primarily due to the combination of high temperatures, stagnant air masses, and increased pollution from various sources.
During the summer months, Atlanta experiences hot and humid weather, which can contribute to the formation of ground-level ozone. Ozone is a harmful pollutant that is created when pollutants from vehicles, power plants, and industrial activities react with sunlight and heat. High levels of ozone can cause respiratory issues and other health problems.
In addition to ozone, Atlanta also experiences increased levels of particulate matter (PM) during the summer and early fall. PM refers to tiny particles suspended in the air, which can come from sources such as vehicle exhaust, industrial emissions, and wildfires.
These particles can be inhaled into the lungs and can have detrimental effects on respiratory health.
It's important to note that air quality can vary from year to year and is influenced by various factors. Local regulations, weather patterns, and changes in pollutant emissions can all impact the AQI during different seasons.
Monitoring air quality reports and taking necessary precautions such as reducing outdoor activities during times of poor air quality can help individuals stay informed and protect their health.
For more such question on air quality visit:
https://brainly.com/question/21173066
#SPJ8
After a morning of cross-country skiing, you return to the chalet and you prepare a good broth.
You pour 250 mL (1g/mL) of broth into a cup at a temperature of 70°C (c = 4.18 J/g•°C).
To avoid burning yourself, you add 50 mL of cold water at 5°C to the cup. What will be the
final broth temperature?
Answers
The final broth temperature will be approximately 38.4°C.
When mixing two substances with different temperatures, we can use the principle of conservation of energy. The energy lost by the hot substance (broth) is equal to the energy gained by the cold substance (water), assuming no energy is lost to the surroundings. This can be expressed using the equation:
Q_lost = Q_gained
The energy lost by the broth can be calculated using the formula:
Q_lost = m_broth * c_broth * (T_final - T_initial)
where m_broth is the mass of the broth, c_broth is its specific heat capacity, T_final is the final temperature, and T_initial is the initial temperature of the broth.
Similarly, the energy gained by the water can be calculated using:
Q_gained = m_water * c_water * (T_final - T_initial)
Since the two substances reach thermal equilibrium, we can set Q_lost equal to Q_gained:
m_broth * c_broth * (T_final - T_initial) = m_water * c_water * (T_final - T_initial)
Plugging in the given values and solving for T_final, we find that the final temperature of the broth is approximately 38.4°C.
for such more questions on temperature
https://brainly.com/question/4735135
#SPJ8
In an enzyme catalyzed reaction, the substrate concentration needed to reach 50% of the maximum reaction velocity is 25 μM. What substrate concentration is required to obtain at least 95% of the maximum reaction velocity?
Answers
Answer:
wow
Explanation:
it is because of my love for uh
Which two particles are found in the nucleus of an atom?
neutrons and electrons
protons and electrons
protons and neutrons
neutrons and atoms
Answers
Answer:
C.) protons and neutrons
Explanation:
Most atoms contain proton(s), neutron(s), and electron(s). Within the nucleus of an atom, there are protons and neutrons. Electrons are located outside of the nucleus.
Which portion of a molecule of F2O has partial positive charge?
Question 3 options:
A)
The F atoms
B)
The central O atom
C)
The partial charge on each atom is zero
D)
The partial charge on each atom is negative
Answers
The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B
The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.
Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.
In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.
Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.
Option B
For more such question on partial charges visit:
https://brainly.com/question/29974793
#SPJ8
16) Select the best answer.
Round the answer to the correct number of significant figures.
10.05
2.8899 = 29.043495
29.0435
29.04
29.043
29
Answers
29 is not the best answer depends on the context and the rules for significant figures.
What is best answer?
The best answer depends on the context and the rules for significant figures. If we assume that we need to round to three significant figures:
10.05 has three significant figures, so it is already rounded correctly.2.8899 has four significant figures, so we need to round it to three significant figures. The third significant figure is 9, which is greater than 5, so we round up the second significant figure (which is 8) to 9. Therefore, 2.8899 rounded to three significant figures is 2.89.29.0435 has five significant figures, so we need to round it to three significant figures. The third significant figure is 0, which is less than 5, so we do not round up the second significant figure (which is 4). Therefore, 29.0435 rounded to three significant figures is 29.0.29.04 has four significant figures, so it is already rounded correctly.29.043 has four significant figures, so we need to round it to three significant figures. The third significant figure is 3, which is less than 5, so we do not round up the second significant figure (which is 4). Therefore, 29.043 rounded to three significant figures is 29.0.29 has one significant figure, so it is not rounded correctly to three significant figures.Therefore, 29 is not the best answer.
To know more about significant figures, visit:
https://brainly.com/question/30465808
#SPJ1
PLEASE GUYS I NEED THIS ASAP
Express in moles:
a) 6.02.10²2 C₂H₂ molecules;
b) 1.80-1024 nitrogen atoms;
c) 3.01-1023 NH, molecules.
What is the molar mass of these substances?
Answers
Answer:
a)0.1moles
b)2.99moles
c)0.5moles
expressed in molar mass
a)26g/mol
b)14g/mol
c)17g/mol
Explanation:
remember
1mole=6.02×10^23
Which if the following numbers in your personal life are exact numbers?
A. Your cell phone number
B. Your weight
C. Your IQ
D. Your driver's license number
E. The distance you walked yesterday
Answers
Answer:
I think D
Explanation:
Your cell phone number and your driver's license number are the numbers of your personal life that are exact.
In this context, an exact number refers to a number that if it undergoes any modification will not refer to the same thing that it referred to before that modification.
For example, my phone number is 12345. This number is exact because it cannot be changed because or else it would cease to be my phone number, that is, if someone wants to call me and writes the number 12346 it is no longer my number.
Addicionally, if my driver's license number is 112233 it is an exact number because if it is modified it would be the number of another driver.
According to the above, options B, C, and E are incorrect because they are inaccurate numbers because if they are modified they all refer to me and they would not change their meaning.
Learn more in: https://brainly.com/question/17093923
Consider the unbalanced chemical equation:
H2SO4 (aq) + Fe(OH)3 (S) → Fe2(SO4)3 (S) + H2O (L)
A volume of 38.0 mL of aqueous H2SO4 solution was required to
react completely with 0.685 g Fe(OH)3 (molar mass = 106.8 g/mol)
to produce Fe2(SO4)3. Calculate the molar concentration of the
H2SO4 solution.
A) 0.253 M
B) 0.344 M
C) 0.214 M
D) 0.301 M
E) 0.175 M
Answers
The answer is A. The explanation is in the image.
On the top of the image where it just says equation:, that is part of the sentence "First we need to balance the equation:"
9.23 x 10^23 Au atoms= moles Au
Answers
Answer:
1.533 moles Au
Explanation:
To find the moles from atoms, you just use Avogadro's number (6.02214076×10^23 mol^-1) and divide by it. Hope this helped!
Answer:
\(\boxed {\boxed {\sf 1.53 \ mol \ Au}}\)
Explanation:
We are asked to find how many moles of gold are in 9.23 *10²³ atoms of gold.
Avogadro's Number or 6.022 *10²³ is used to convert atoms to moles. This is the number of particles (atoms, molecules, formula units, etc.) in 1 mole of a substance. In this case, the particles are atoms of gold.
We convert using dimensional analysis. Set up a conversion factor using Avogadro's Number.
\(\frac {6.022 \times 10^{23} \ atoms \ Au}{ 1 \ mol \ Au}\)
We are converting 9.23 * 10²³ atoms of gold to moles, so we multiply by this value.
\(9.23 \times 10^{23} \ atoms \ Au *\frac {6.022 \times 10^{23} \ atoms \ Au}{ 1 \ mol \ Au}\)
Flip the conversion factor so the units of atoms of gold cancel.
\(9.23 \times 10^{23} \ atoms \ Au *\frac { 1 \ mol \ Au}{6.022 \times 10^{23} \ atoms \ Au}\)
\(9.23 \times 10^{23} *\frac { 1 \ mol \ Au}{6.022 \times 10^{23}}\)
\(\frac {9.23 \times 10^{23} }{6.022 \times 10^{23} } \ mol \ Au\)
\(1.53271338426 \ mol \ Au\)
The original measurement of atoms has 3 significant figures, so our answer must have the same. For the number we found, that is the hundredth place. The 2 in the thousandth place tells us to leave the 3.
\(1.53 \ mol \ Au\)
9.23 *10²³ atoms of gold is equal to approximately 1.53 moles of gold.
Starting with 0.3500 mol CO(g) and 0.05500 mol COCl2(g) in a 3.050 L flask at 668 K, how many moles of CI2(g) will be present at equilibrium?
CO(g) + Cl2(g)》COCl2(g)
Kc= 1.2 x 10^3 at 668 K
Answers
At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
1: Write the balanced chemical equation:
\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)
2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.
Initial:
\(C_O\)(g) = 0.3500 mol
\(Cl_2\)(g) = 0.05500 mol
\(C_OCl_2\)(g) = 0 mol
Change:
\(C_O\)(g) = -x
\(Cl_2\)(g) = -x
\(C_OCl_2\)(g) = +x
Equilibrium:
\(C_O\)(g) = 0.3500 - x mol
\(Cl_2\)(g) = 0.05500 - x mol
\(C_OCl_2\)(g) = x mol
3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:
Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]
4: Substitute the given equilibrium constant (Kc) value into the expression:
1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)
5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:
1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x
6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.
7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.
8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):
\(Cl_2\)(g) = 0.05500 - x
9: Calculate the value of \(Cl_2\)(g) at equilibrium:
\(Cl_2\)(g) = 0.05500 - x
\(Cl_2\)(g) = 0.05500 - (positive value of x)
10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.
Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
For more such questions on equilibrium, click on:
https://brainly.com/question/517289
#SPJ8
A bone taken from a garbage pile buried under a hill-side had 14C/12C ratio 0.477 times the ratio in a living plant or animal. What was the date when the animal was buried?
Answers
Answer:
The date when the animal was buried can be estimated by using the decay rate of Carbon-14. The half-life of Carbon-14 is 5,730 years, so the date when the animal was buried can be estimated by taking the half-life and multiplying it by the logarithm of the ratio of the 14C/12C ratio of the bone and the 14C/12C ratio of a living plant or animal. In this case, 5,730 years x log(0.477) = 45,906 years ago.
Explanation:
If 0.225 mol of an ideal gas has a volume of 1923 mL and a pressure of 6.00 atm, what is its temperature in degrees Celsius?
Use one of the following values:
R = 0.0821 atm • L/mol • K
R = 8.31 kPa • L/mol • K
R = 62.4 torr • L/mol • K
Answers
The temperature (in °C) given that 0.225 mole of an ideal gas has a volume of 1923 mL and a pressure of 6.00 atm is 351.6 °C
How do i determine the temperature of the ideal gas?First, we shall list out the various parameters obtained from the question. This is shown below:
Number of mole of ideal gas (n) = 0.225 moleVolume of ideal gas (V) = 1923 mL = 1923 / 1000 = 1.923 LPressure (P) = 6 atmGas constant (R) = 0.0821 atm.L/mol KTemperature of ideal gas (T) =?The temperature of the ideal gas can be obtain as follow:
PV = nRT
6 × 1.923 = 0.225 × 0.0821 × T
11.538 = 0.0184725 × T
Divide both sides by 0.0184725
T = 11.538 / 0.0184725
T = 624.6 K
Subtract 273 to obtain answer in °C
T = 624.6 - 273 K
T = 351.6 °C
Thus, we can conclude that the temperature of the ideal gas is 351.6 °C
Learn more about temperature:
https://brainly.com/question/23058797
#SPJ1
A rock rolls down a hill. Which form of energy is this an example of?
Chemical
Electrical
Mechanical
Thermal
Answers
Answer:
Mechanical
Explanation:
chemical
Explanation:
I took test 2020
According to Coulomb's law, what will happen to the electric force between two identical negative charges as they move closer together?
Answers
Answer:
According to Coulomb’s law, the electric force between two identical negative charges is inversely proportional to the square of the distance between them. This means that as the distance between the two charges decreases, the electric force between them will increase. Since the charges are both negative, they will repel each other, so as they move closer together, the repulsive force between them will become stronger.
Explanation:
The pOH of a solution is 6.0. Which statement is correct?
Use pOH = -log[OH-] and PH+pOH = 14.
The pH of the solution is 20.0.
O The concentration of OH ions is 1.0 x 108 M.
The concentration of OH ions is 1.0 x 106 M.
O The pH of the solution is 8.0.
A
Answers
At pOH value of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)
In this question we will apply the formula
pH +pOH = 14 . . . . . . . . . . . . .(1)
where pH = concentration of [\(H^{+}\) ] ion
pOH = concentration of [\(OH^{-}\) ] ion
As per the question
pOH =6.0
Putting the value of pOH in equation (1) we get the value of pH
pH + 6.0 =14
pH = 14 -6.0
pH = 8.0
The value of pH if the pOH value is 6.0 is 8.0
To find the concentration of \(H^{+}\) ion we will use the following formula
This is calculated by the formula
[\(H^{+}\)} = \(10^{-pH}\)
where we will write the values of pH
Hence the concentration of [\(H^{+}\)} ion is \(10^{-8}\)
Therefore at pOH of 6.0 the pH value of the following solution is 8.0 and the concentration of [\(H^{+}\) ] ion is \(10^{-8}\)
Read more about pH
https://brainly.com/question/11300720
The complete question is -
What is the pH value and concentration of [\(H^{+}\) ] ion of the following if the pOH value of the solution is 6.0 ?
18)
List the phases of water in order, from the phase with the slowest molecular movement to the phase with the fastest molecular movement.
A)
Gas-Liquid-Solid
B)
Liquid-Solid-Gas
C)
Solid-Liquid-Gas
D)
Gas-Solid-Liquid
Answers
Answer:
Solid--Liquid--Gas
Explanation:
A Solid substance has its molecular particles closely packed so molecular movement is very slow
A liquid substance has freer molecular particles than a solid substance so molecular movement is moderate
A gas substance has its molecular particles scattered so it's molecular movement is the fastest of the three.
A cheeseburger from Mchemistry contains 19g of fat, 20g of carbs, and 28g of protein
Answers
Total calories : 363 kcal
Further explanationComplete question
A cheeseburger from a fast-food restaurant contains 19g of fat, 20g of carbs, and 28g of protein. How many kcal of energy does the cheeseburger contain?
We convert each gram of composition to kcal :
1 gram of fat = 9 kcal
1 gram of carbs = 4 kcal
1 gram of proteins = 4 kcal
Fat\(\tt 19\times 9~kcal=171~kcal\)
Carbs\(\tt 20\times 4=80~kcal\)
Protein\(\tt 28\times 4=112~kcal\)
Total calories\(\tt 171+80+112=363~kcal\)
The motion of gas particles is described by straight line motion, followed by a collision and a change in direction. This is know as
Answers
Answer:
It is called the Random Walk, where the next move (as seen through the motion of gas particles) depends on chance.
Explanation:
Balance the equation ___ CaCO3 -> ____ CaO + ____ CO2
Answers
Answer:
CaCO3 -> CaO + CO2
Explanation:
Woahhhh, did you balance it yourself just then?
Determine which reaction has the highest activation energy. A. Melting ice B. Reacting metal and acid C. Burning charcoal D. Combusting gasoline
Answers
Answer:
C. Burning charcoal
Explanation:
Charcoal is a solid fuel. We normally expect a solid fuel to possess a very high activation energy. Activation energy refers to the energy barrier that must be crossed by reactants in order to be converted into products. A high activation energy implies that the reaction may not be spontaneous at ordinary temperatures and a large external energy must be supplied before the reaction proceeds.
Charcoal is not as spontaneously flammable as gasoline. This implies that a greater energy is required to initiate the combustion of charcoal compared to gasoline. This further buttresses the fact that the activation energy for the combustion of gasoline is less than that for the combustion of charcoal.
The reaction of metals with acid is quite spontaneous at ordinary temperatures for highly reactive metals hence it does not have a high activation energy. The melting of ice is not a chemical reaction hence we can't talk about its activation energy.
Sunlight is a form of electromagnetic energy.
Answers
Answer:
yes
Explanation:
yes it is
HNS + O2 =
How do I balance this equation?
Answers
Answer:
HNS + O2 -> H2O + N2 + SO2
Explanation:
Up there is the clear version so this is how it's look like when it's balanced:
4HNS + 5O2 -> 2H2O + 2N2 + 4SO2
Answer:
Answer:HNS+02= H20 + N2 + S02 = chemical Equation balancer
How much would 400. jelly beans weigh in grams?
Answers
Answer:
453 or 453.592
Explanation:
400 jellybeans are about a pound and a pound is 453.592 grams
Lidocaine, a widely used local anesthetic, it’s available as a 2.0% (w/v) solution for injection. Calculate the volume of the solution that contains 60 mg of lidocaine. Be sure your answer has a unit symbol and is rounded to the correct number of significant digits.
Answers
Givens.
• Lidocaine is available as a 2.0% (w/v) solution.
,• The mass of solute is 60. mg of lidocaine.
To find the volume of this solution, we use the following equation.
\((\frac{w}{v})=\frac{Mass\text{ of solute}}{Volume\text{ of solution}}\)Use the given magnitudes and solve for volume.
\(\begin{gathered} 0.02=\frac{60mg}{V} \\ V=\frac{60mg}{0.02} \end{gathered}\)But, we need to use grams.
\(V=\frac{0.060g}{0.02}=3\)Therefore, the volume of this solution is 3.0 mL.