Answer:
Newtonian fluids have a constant viscosity that does not change and non newtonain fluids have a viscosity that varies.
Explanation
Newtonian fluids have a constant viscosity and a zero shear rate at zero shear stress. Non-Newtonian fluids have a variable viscosity and a varible relationship with shear stress.
which part of the red blood cells can you find hemoglobin
Answer:
The cytoplasm of erythrocytes is rich in hemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red color of the cells and the blood. Each human red blood cell contains approximately 270 million of these hemoglobin molecules.
Which of the following can limit the growth of a population of organisms?
O Both diseases and the availability of resources can limit the growth of a population of organisms.
Diseases can limit the growth of a population of organisms, but the availability of resources cannot.
O The availability of resources can limit the growth of a population of organisms, but diseases cannot.
O Neither diseases nor the availability of resources can limit the growth of a population of organisms.
Answer: The answer is both diseases and availability of resources can limit the growth of a population of organisms which is A
Explanation:
4. How many moles of gold (Au) are in a pure gold nugget having a mass of 25.0 grams.
0.127 mol Au
General Formulas and Concepts:Math
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightChemistry
Atomic Structure
Reading a Periodic TableMolesStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 25.0 g Au
[Solve] moles Au
Step 2: Identify Conversions
[PT] Molar Mass of Au - 196.97 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 25.0 \ g \ Au(\frac{1 \ mol \ Au}{196.97 \ g \ Au})[/tex][DA] Multiply/Divide [Cancel out units: [tex]\displaystyle 0.126923 \ mol \ Au[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
0.126923 mol Au ≈ 0.127 mol Au
Answer:
[tex]\boxed {\boxed {\sf 0.127 \ mol \ Au}}[/tex]
Explanation:
To convert from mass to moles, the molar mass must be used. This can be found on the Periodic Table.
Gold (Au): 196.96657 g/molUse this number as a ratio.
[tex]\frac {196.96657 \ g\ Au }{1 \ mol \ Au}[/tex]
Multiply by the given number of grams.
[tex]25.0 \ g \ Au*\frac {196.96657 \ g\ Au }{1 \ mol \ Au}[/tex]
Flip the fraction so the grams of gold will cancel.
[tex]25.0 \ g \ Au*\frac {1 \ mol \ Au}{196.96657 \ g\ Au }[/tex]
[tex]25.0*\frac {1 \ mol \ Au}{196.96657 }[/tex]
[tex]\frac {25.0 \ mol \ Au}{196.96657 }[/tex]
[tex]0.1269250919 \ mol \ Au[/tex]
The original measurement has 3 significant figures, so the answer must have the same. For the number we calculated that is the thousandth place. The 9 in the ten thousandth place tells us to round the 6 to a 7.
[tex]0.127 \ mol \ Au[/tex]
25.0 grams of gold is about 0.127 moles of gold.
Calculate the value of the equilibrium constant, c, for the reaction
Q(g)+X(g)=2M(g)+N(g)
given that
M(g)=Z(g) c1=3.97
6R(g)=2N(g)+4Z(g) c2=0.523
3X(g)+3Q(g)=9R(g) c3=11.8
Question is asking for c
For the reaction
CaI2+2AgNO3⟶2AgI+Ca(NO3)2
how many grams of silver nitrate, AgNO3, are needed to react completely with 16.5 g of calcium iodide, CaI2?
4.75gram of silver nitrate is required to react with 16.5 g of calcium iodide. The balanced equation is
[tex]CaI_{2} +2AgNO_{3}\rightarrow 2AgI+Ca(NO_{3})_{2}[/tex]
What is stoichiometry?
Stoichiometry is a part of chemistry that help us in making relationship between reactant and product from quantitative aspect.
The balanced equation is
[tex]CaI_{2} +2AgNO_{3}\rightarrow 2AgI+Ca(NO_{3})_{2}[/tex]
The mole ratio of calcium iodide to silver nitrate is 1:2
Moles of calcium iodide = 2×moles of silver nitrate
mass of calcium iodide ÷Molar mass of calcium iodide = 2×moles of
Silver nitrate
16.5÷[20+2(126)]= 2×moles of silver nitrate
16.5÷293.88= 2×moles of silver nitrate
0.056= 2×moles of silver nitrate
0.028= moles of silver nitrate
0.028×Molar mass of silver nitrate=mass of silver nitrate
0.028×169.87= mass of silver nitrate
4.75gram= mass of silver nitrate
Thus 4.75gram of silver nitrate is required to react with 16.5 g of calcium iodide
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What type of energy relates to the movement of objects or its position in gravity ?
•electrical
•thermal
•light
•nuclear
•sound
•chemical
•mechanical
Answer:
Thermal creo que esa es[tex]ayudaaaaa [/tex]A 15 g sample of steam at 100°C is emitted from a volcano. It condenses, cools, and falls as snow at 0°C. How many kilojoules of heat were released? [Specific heat of liquid water = 1.00 cal/g°C or 4.184 J/g°C); solid water 0.485 cal/g°C or 2.03 J/g°C]
Answer:
q= -40.236 or 40.236 KJ of heat released
Explanation:
I attached a picture + a cooling curve.
How many moles are in 6.5e23 atoms of Ne?
1.1 mol Ne
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 6.5 × 10²³ atoms Ne
[Solve] moles Ne
Step 2: Identify Conversion
Avogadro's Number
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.5 \cdot 10^{23} \ atoms \ Ne(\frac{1 \ mol \ Ne}{6.022 \cdot 10^{23} \ atoms \ Ne})[/tex][DA] Divide [Cancel out units]: [tex]\displaystyle 1.07938 \ mol \ Ne[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
1.07938 mol Ne ≈ 1.1 mol Ne
A sample contains 0.1895 g of salt per 50 g of seawater. What is its salinity?
What are some differences between earth and mars
Oki,
1. Earth is third planet away from the Sun whiles Mars is the fourth planet away from the Sun.
2.. Earth takes 365 days to revolve around the Sun whiles Mars takes 687 days to do so.
3. Earth is the fifth largest planet in the Solar System whiles Mars is the second smallest planet.
4. Mars is reddish in colour but Earth is not
5. About 70% of the earth is covered with water but Mars is just covered with bare dust and rocks.
Hope this is enough
in which of the following aqueous solutions would you expect AgCl to have the HIGHEST solubility?a) Pure Waterb) 0.015 M NaClc) 0.020 M AgNO3d) 0.020 M KCle) 0.020 M BaCl2
Answer:
Pure Water
Explanation:
The common ion effect describes the effect on equilibrium that occurs when a common ion (an ion that is already contained in the solution) is added to a solution. The common ion effect generally decreases solubility of a solute(Khan Academy).
NaCl, AgNO3, KCl, BaCl2 solutions all have a common ion with AgCl. As a result of this, AgCl will be much less soluble in these solvents than it is in pure water.
Therefore, AgCl will have the highest solubility in pure water compared to all the solutions listed above.
A student claims that signals transmitted by wireless computer networks are more beneficial than signals transmitted by other devices. Which statement supports the student’s claim?
im giving brainliest and 11 points
Answer: The wireless signals can carry large amounts of data at high radio frequencies.
Explanation: the others don’t specify the kind of signal
What is the mole fraction of oxygen in a gaseous mixture containing 25 grams of oxygen, 15 grams of nitrogen, and 10 grams of helium?
The statement, that describes the mole fraction of oxygen is "0.20."
What is mole fraction?The mole fraction, often known as the molar fraction, is defined in chemistry as the amount of a constituent, nᵢ, divided by the total amount of all constituents in a mixture, nₜₒₜ. It denotes the number of moles of a certain component in the solution divided by the total number of moles in the solution.
In order to calculate the mole fraction, initially the moles of the substance to be calculated from the given mass.
Gram to mole conversion,
[tex]=Grams\;*\;\frac{1\;mol}{grams} \\Moles of O2,25\;g\;*\;\frac{1\;mol}{32\;g}\;=\;0.78\;mol\;O2\\Moles of N215\;g\;*\;\frac{1\;mol}{28.02\;g}\;=\;0.54\;mol\;O2\\Moles of He10\;g\;*\;\frac{1\;mol}{4.0\;g}\;=\;2.5\;mol\;He[/tex]
Now, adding all the moles of gases0.78 + 0.54 + 2.5 = 3.82 moles.
Mole fraction of oxygen comes out to be,
[tex]Mole\; fraction\;=\frac{Amount \;of\;the\;substance}\\{Total\;moles} \\Mole\;fraction\;=\frac{0.78\;mol\;O2}{3.82 \;mol} =0.204.[/tex]
Hence the correct answer is 0.20.
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A 2.455 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 23.61 ∘C to 27.04 ∘C. The heat capacity (calorimeter constant) of the calorimeter is 38.29 kJ/ ∘C, what is the heat of combustion per gram of the material?
Answer: The heat of combustion per gram of the material is 53.5 kJ
Explanation:
Let the heat released during reaction be q.
[tex]q=m\times c\times \Delta T[/tex]
[tex]q_{cal}[/tex] = Heat gained by calorimeter
Heat capacity of bomb calorimeter ,C = 38.29 kJ/°C
Change in temperature = ΔT = (27.04-23.61) °C = 3.43 °C
[tex]q_{cal}=C_{bomb}\times \Delta T=38.29\times 3.43=131.3kJ[/tex]
Total heat released during reaction is equal to total heat gained by bomb calorimeter.
[tex]q_{combustion}=-(q_{cal})[/tex]
[tex]q_{combustion}=-(131.3)J[/tex]
Thus 2.455 g of material releases 131.3 kJ of heat
1 g of material releases =[tex]\frac{131.3}{2.455}\times 1=53.5kJ[/tex] of heat
Thus the heat of combustion per gram of the material is 53.5 kJ
what would refract the most? air, water, or glass?
How many Protons, Electrons and Neutrons does Calcium-36 have?
Answer:
Calcium is the 20th element, with 20 protons. Since a stable atom has a net charge of 0, we must have 20 electrons. The number of neutrons will be the same as the number of protons, or else we will have an isotope, in this case, it is also 20.
Explanation:
What type of energy is a light switch
1.thermal
2.sound
3.light
4.electrical
5.mechanical
Answer:
electrical
Explanation:
With electrical energy, it's helpful to think of an on/off switch. When the switch is off, the electrical energy is stored as potential energy. When the switch is on, electrical energy is being used as kinetic energy.
type of environmental factors such as temperature or amount of light that might affect an organism's phenotype is___________
How many moles of CCI are there in 78.2 g of CCI.?
0.508 moles
12.028 moles
1.55 x 10-4moles
153.8 moles
Answer:
0.508 mole
Explanation:
NOTE: Since no hydrogen is attached to the compound given in question above, it means the compound is CCl₄.
The number of mole present in 78.2 g of CCl₄ can be obtained as follow:
Mass of CCl₄ = 78.2 g
Molar mass of CCl₄ = 12 + (35.5×4)
= 12 + 142
= 154 g/mol
Mole of CCl₄ =?
Mole = mass / molar mass
Mole of CCl₄ = 78.2 / 154
Mole of CCl₄ = 0.508 mole
Therefore, 0.508 mole is present in 78.2 g of CCl₄
what type of energy typing on the computer
1.thermal
2.light
3.sound
4.mechanical
5.electrical
Answer:
5. electrical.
Explanation:
Hello!
In this case, since the energy can be manifested in different forms of energy, when talking about electronic devices such as cellphones, computers, consoles and all of them, as they are powered by electric sources, we infer that the answer in this case is 5. electrical , since thermal energy is associated to the temperature, light and sound to the energy carried by a wave and mechanical to a work done.
Best regards!
A beaker of cold water is placed in a hot water bath at 90•C..
Descibe the final temperature after diffusion??
Answer:All matter consists of particles, which vibrate (wiggle about a fixed position), translate (move from one location to another) and even rotate (revolve about an imaginary axis). An object ... or a particle ... that is moving has kinetic energy. A warm cup of water on a countertop may appear to be as still as can be; yet the particles that are contained within it have kinetic energy. At the particle level, there are atoms and molecules that are vibrating, rotating and moving through the space of its container. Stick a thermometer in the cup of water and you will see the evidence that the water possesses kinetic energy. The water's temperature, as reflected by the thermometer's reading, is a measure of the average amount of kinetic energy possessed by the water molecules.
Explanation:
A beaker of cold water is placed in a hot water bath at 90°C. The final temperature after diffusion will be below 90°C.
What is temperature?The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature. Thermometers are calibrated using a variety of temperature scales, which historically defined distinct reference points or thermometric substances.
The most popular scales are the Kelvin scale (K), which is mostly used for scientific purposes, the Fahrenheit system (°F), as well as the Celsius scale, which has the unit symbol °C. A beaker of cold water is placed in a hot water bath at 90°C. The final temperature after diffusion will be below 90°C.
Therefore, the final temperature after diffusion will be below 90°C.
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type of environmental factors such as the presence of a hormone that might affect an organism's phenotype is __________
about the door is locked and I think I have a few questions about the door is locked and I think I have
Explanation:
can you tell me what the door is locked and I think I have a few questions about the door is locked and I think I have a few questions
gas laws escape room
Answer:
what are you asking
Explanation:
The gas laws are Boyle's law, Charles law, ideal gas law, and Gay-Lussac law.
What are the different gas laws?The first law is Boyle's law that states that at constant temperature, the pressure varies with volume of the gas.
The second law is Charles's law that states that at constant pressure, the volume of the gas is directly proportional to the temperature of the gas.
Above, both laws form the ideal gas law. PV = nRT.
Thus, the gas laws are Boyle's law, Charles law, ideal gas law, and Gay-Lussac law.
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Somebody help me asap please giving brainliest (answer to the both of them)
Answer:
1. Causes air to vibrate 2. A hydroelectric dam generating electricity on a river
What are the 5 common uses of fossil fuels?
Answer:
Electricity. Coal alone provides half the electricity in the United States. ...
Heating. Oil and natural gas are commonly used for heating homes as well as providing heat for industrial applications.
Transportation. Oil supplies 99 percent of the energy for cars in the form of gasoline and diesel. ...
Limits. ...
Considerations.
Explanation:
help help plz what is the difference between normal and transition elements
Answer:
hope it helps you
mark me as brainliest!!
What volume in L of a 0.724 M Nal solution contains 0.405 mol of Nal?
Answer:
0.559 L
Explanation:
Step 1: Given data
Moles of sodium iodide (n): 0.405 molMolar concentration of sodium iodide (M): 0.724 M (0.724 mol/L)Step 2: Calculate the volume of solution (V)
The molarity is equal to the moles of solute divided by the liters of solution.
M = n/V
V = n/M
V = 0.405 mol/(0.724 mol/L) = 0.559 L
The volume in Litres of a 0.724 M Nal solution that contains 0.405 mol of Nal is 0.56L.
HOW TO CALCULATE VOLUME:
The volume of a solution can be calculated by dividing the number of moles by the molarity as follows:Volume = no. of moles ÷ molarityAccording to this question, 0.724 M sodium iodide (NaI) solution contains 0.405 mol of Nal, the volume can be calculated as follows:Volume = 0.405mol ÷ 0.724MVolume = 0.56 LitresTherefore, the volume in Litres of a 0.724 M Nal solution that contains 0.405 mol of Nal is 0.56L.Learn more at: https://brainly.com/question/15626439?referrer=searchResults
A wave is a disturbance that carries...
What happens when an ice cube melts in a glass of water?
Answer:
um u dont choke on the ice cube
Explanation:
Pleaaase argent !!! Explain ur answers
Consider the following reaction:
Fe3+(aq) + SCN-(aq) ↔︎ [Fe(SCN)]2-(aq)
1)Explain what is meant by the term dynamic equilibrium.
2)Write the equilibrium expression for the reaction.
3) The numerical value of Kc at 298K is about 1000 for the reaction. What does this tell you about the position of the equilibrium at 298K?
Answer:
1. Dynamic equilibrium is a equilibrium in which the rate of forward direction is equal to the rate of backward direction. It is represented by a right left arrow.
2) Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_c[/tex]
For the given chemical reaction:
[tex]Fe^{3+}(aq)+SCN^-(aq)\rightleftharpoons [Fe(SCN)]^{2-}(aq)[/tex]
The expression for [tex]K_c[/tex] is written as:
[tex]K_c=\frac{[[Fe(SCN)]^{2-}]}{[Fe^{3+}][SCN^-]}[/tex]
3) The value of [tex]K_c[/tex] is 1000 , which means the products are more favoured as compared to reactants and that the equilibrium lies more towards product side.