Answer:
25kg is the largest mass.
Explanation:
Convert all the masses to kg so that the units would be uniform
1mg = 10^-6kg
2.5×10^-2mg = 2.5×10^-2×10^-6 = 2.5×10^-8kg
1pg = 10^-15kg
2.5×10^15pg = 2.5×10^15×10^-15 = 2.5kg
1ng = 10^-12kg
2.5×10^10ng = 2.5×10^10×10^-12 = 0.025kg
1fg = 10^-18kg
2.5×10^9fg = 2.5×10^9×10^-18 = 2.5×10^-9kg
The smallest mass is 25 ×10⁹ fg among the given options. Therefore, option (D) is correct.
What is the mass?Mass can be described as the quantity of matter in a physical body. It measures inertia, the resistance to acceleration when a force is applied.
The S.I. unit of mass is the kilogram (kg) and is often determined by measuring the object's weight using a spring scale. A body on the Moon would weigh less than that on Earth because of gravity, but its mass remains the same.
We know that 1 mg = 1 millgram = 10³ g
The mass = 2.5 × 10⁻² mg = 2.5 × 10⁻² × 10³ = 2.5 × 10⁻⁵ g
We know that 1 kilogram = 10³g
Then mass = 25 Kg = 25 × 10³ g
We know that, 1 fg = 1 femtogram = 10⁻¹⁵ g
Then mass = 2.5 × 10⁹ fg = 2.5 × 10⁹ × 10⁻¹⁵ = 2.5 × 10⁻⁶ g
We know that 1 ng = 1 nanogram = 10⁻⁹ g
The mass = 2.5 × 10¹⁰ × 10⁻⁹ = 250 g
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A wave is a disturbance that carries...
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 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]help help plz what is the difference between normal and transition elements
Answer:
hope it helps you
mark me as brainliest!!
Write the iupac name of
Arabians Chemistry Fact
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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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.
If 50 g of solute can be dissolved in 100 g of water, how many grams of solute can be dissolved in 300 g of water?
Answer:
150g
Explanation:
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
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!
What happens when an ice cube melts in a glass of water?
Answer:
um u dont choke on the ice cube
Explanation:
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:
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
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.
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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A paleontologist finds a fish fossil in a desert. What might the paleontologist learn from this?
Answer:
sometime back there might be a water body there
Answer:
Paleontologists can identify organisms that may be ancient relatives of those living today. By looking at fossils from the same layer of rocks, they can also suggest how these organisms lived together in their ancient habitat.
Also, he/she can find out that there was water there millions of year ago.
What is the term used for the elements and compounds after a chemical reaction takes place?
Answer: reactants.
Explanation:
To the right of the arrow we have the 'after' situation. This side represents the substances that we have after the reaction has taken place. They are called the products
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 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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Alcohol metabolism takes place in the
O small intestine
stomach
O
heart
Oliver
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 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:
Write the dissociation reaction for each of the following
(If anyone can help me with 14 at most) please and thank you
Answer:
Cu2+ and ClO3 1-
Ga3+ and S-2
Pb4+ AsO3 3-
then balance them as you check my numbers to be sure they are right
Explanation:
Cu2+ and 2ClO3 1-
2Ga3+ and 3S-2
3Pb4+ 4AsO3 3-
A sample contains 0.1895 g of salt per 50 g of seawater. What is its salinity?
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
type of environmental factors such as temperature or amount of light that might affect an organism's phenotype is___________
what would refract the most? air, water, or glass?
Explain the design and function of a sponge.
Answer:
it soaks up waterrrrrrr
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