The density of the bowling ball is 3.384 g/cm^3. The mass of a substance per unit of volume is its density. Density is most frequently represented by the symbol, however Latin letter D may also be used.
What is Volume?A closed surface or object's volume is measured in three dimensions and is expressed mathematically. Cubic measurements of volume include m3, cm3, in3, etc. The term "volume" is sometimes used to refer to "capacity." A three-dimensional space's occupied volume is measured. It is often numerically quantified using a variety of imperial units or SI-derived units, such as the cubic meter and liter (such as the gallon, quart, and cubic inch). The link between volume and length (cubed) is symbiotic. It is more common to think of a container's volume as its capacity rather than as the quantity of room it occupies. The amount of fluid (liquid or gas) that the container can hold is defined as its volume, in other words.Therefore,
The radius of the bowling ball = 8 cm
Weight of the ball = 2722 g
Volume of the bowling ball = 4 π r^2 = 4 x 3.142 x 8 x 8 = 804.352 cm^3
Density = Mass/Volume
⇒ Density of the ball = 2722/804.352
⇒ Density = 3.384 g/cm^3
Therefore, the density of the bowling ball is 3.384 g/cm^3.
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The density of the bowling ball is 3.384 g/cm^3. The mass of a substance per unit of volume is its density. Density is most frequently represented by the symbol, however Latin letter D may also be used.
What is Volume?A closed surface or object's volume is measured in three dimensions and is expressed mathematically. Cubic measurements of volume include m3, cm3, in3, etc. The term "volume" is sometimes used to refer to "capacity."
A three-dimensional space's occupied volume is measured. It is often numerically quantified using a variety of imperial units or SI-derived units, such as the cubic meter and liter (such as the gallon, quart, and cubic inch). The link between volume and length (cubed) is symbiotic.
It is more common to think of a container's volume as its capacity rather than as the quantity of room it occupies. The amount of fluid (liquid or gas) that the container can hold is defined as its volume, in other words.
Therefore,
The radius of the bowling ball = 8 cm
Weight of the ball = 2722 g
Volume of the bowling ball = 4 π r^2 = 4 x 3.142 x 8 x 8 = 804.352 cm^3
Density = Mass/Volume
⇒ Density of the ball = 2722/804.352
⇒ Density = 3.384 g/cm^3
Therefore, the density of the bowling ball is 3.384 g/cm^3.
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Which of the following involves a change in the physical properties of original substances
Which product in the reaction forms a precipitate?
•
PbSO4
•
MgCl2
•
PbMg
•
no precipitate formed
MgCl₂ in the reaction forms a precipitate.
What is precipitation reaction?The chemical reaction in which two ionic bond combine to form an insoluble salt in a aqueous solution is called precipitation reaction. The formation of a precipitate, an insoluble ionic solid, which is the result of precipitation processes, occurs when cations and anions in an aqueous solution interact. The solubility principles for typical ionic solids can be used to assess if such a reaction happens. MgCl₂ produced as a product in the reaction forms precipitate because it is solid in nature and it is an insoluble salt and not dissolve in solution and forms precipitate on the bottom surface of the solution. Thus, MgCl₂ product in the reaction forms a precipitate.
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Answer:
PbSO4
Explanation:
just took it
How long would it take a fish to completely decompose if there were no decomposers to decompose then?
For a fish to completely decompose if there were no decomposers, it takes few days to more than a week.
Decomposers are living organisms like fungi and bacteria. These decomposers are heterotrophic which means they must take the nutrients and it cannot make its own food. Decomposers play an eminent role in an ecosystem because of their process of nutrition.
They break down the dead plants and the animals. These break down the waste of the organisms. They are very eminent for all the ecosystem. If these were not in the ecosystem, the plants cannot get essential nutrients, dead matter and waste would deposit. So the nutrients in them gets recycled back so that they can be used again.
When fish dies, there is nothing which is ingested and the bladder air starts to release, which causes the fish to sink to the bottom. After few days, the internal organs of the dead fish gets decomposed, after which a gas is formed.
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What makes the element lead (pb) unique?
Answer:
As a metal, it is (was) widely used for its malleability, ductility, and its resistance to corrosion, making popular in older plumbing systems. Strangely, even as a metal, it is not a good conductor of electricity.
will there be a problem if a large excess of the recrystallizing solvent is used in the recrystallization of a solid? briefly explain.
Acetinilide is recrystallized using water as a solvent since it has a much higher solubility in hot water than in cold water. the purified solid will not recrystallize later in the experiment if high amount of hot solvent is added in the beginning. So we need to dissolve the sample in minimum amount of boiling water
What is recrystallizing ?
A purification method called recrystallization is used to get rid of contaminants from a sample. The impure sample is dissolved in an ethanol- or water-based solvent. The material dissolves in the liquid solvent after some brief heating. The solid precipitates out of the solution when the solvent cools down once more, leaving the impurities in the solvent that are still dissolved behind.
Then activated charcoal is added to remove the coloured impurities. After hot film pareshan insoluble impurities are removed. And then cold filtration separates the solid from solution.
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Consider the measurements shown. The
most precise value is highlighted for
each measurement.
9.3478 m + 2.73 m =
What place value must the answer be
reported to?
1. ones place
2. tenths place
3. hundredths place 4. thousandths place
The solution must be stated to the tenths place as follows: 9.3478 + 2.73 = 12.08.
In decimal numbers, what does place mean?After the decimal, the tenths place is represented by the first digit. After the decimal, the hundredths place is represented by the following digit. The place values are filled in by the remaining digits until there are none left.
As stated below, 2.73 must be added by 9.3478.
9.3478 has five significant figures, compared to 2.73's three.
Addition results in 12.0778.
The output will have decimal places equal to the lowest one of the given numbers, according to the criteria for adding significant figures.
Therefore, there should be two decimal places in this result.
We will now wrap things up. The response will be 12.08 because there is a 7 in third position.
9.3478 + 2.73 = 12.08
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if mlml is 2, what are the possible values for ll (for all atoms in their ground states that are known to exist)?
According to the given statement If ml, then l must be either equal to or greater than 2 in this case.
Briefing:The maximum value of l that can currently be assigned to all known atoms in their ground states is 3. The letters d and f, respectively, stand in for these l values, which are 2 and 3, respectively.
What is atom and example?The number of protons an atom has makes it distinct from other atoms. Therefore, a particle devoid of electrons is not an atom. But even a single proton constitutes an atom (of hydrogen). Single atoms of the 2 of the periodic elements like sodium, uranium, oxygen, and chloride are examples of atoms.
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An unknown metal has a mass of 51.842 grams. when placed in a graduated cylinder, the volume of water rose from 17.1 ml to 19.8 ml. what is the identity of the metal?
The density of the metal, given that it has a mass of 51.842 grams is 19.2 g/mL
How to determine the densityFirst, we shall determine the volume of the metal. This can be obtained as follow:
Volume of water = 17.1 mL Volume of water + metal = 19.8 mL Volume of metal =?Volume of metal = (Volume of water + metal) - volume of water
Volume of metal = 19.8 – 17.1
Volume of metal = 2.7 mL
Finally, we shall determine the density of the metal. This is illustrated below:
Mass of metal = 51.842 gramsVolume of metal = 2.7 mL Density of metal = ?Density = mass / volume
Density of metal = 51.842 / 2.7
Density of metal = 19.2 g/mL
From the above calculations, we can conclude that the density of the metal is 19.2 g/mL
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Part 1. A chemist reacted 15.0 liters of F2 gas with NaCl in the laboratory to form Cl2 and NaF. Use the ideal gas law equation to determine the mass of NaCl that reacted with F2 at 280. K and 1.50 atm.
F2 + 2NaCl → Cl2 + 2NaF
Part 2. Explain how you would determine the mass of sodium chloride that can react with the same volume of fluorine gas at STP.
Taking into account the reaction stoichiometry and ideal gas law, the mass of NaCl that reacted with F₂ at 280 K, 15 L and 1.50 atm is 114.56 grams; and if you have the same volume of fluorine gas at STP, the mass of NaCl reacted is 78.323 grams.
Reaction stoichiometryIn first place, the balanced reaction is:
F₂ + 2 NaCl → Cl₂ + 2 NaF
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
F₂: 1 moleNaCl: 2 molesCl₂: 1 moleNaF: 2 molesThe molar mass of the compounds is:
F₂: 38 g/moleNaCl: 58.45 g/moleCl₂: 70.9 g/moleNaF: 42 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
F₂: 1 mole×38 g/mole= 38 gramsNaCl: 2 moles×58.45 g/mole= 116.9 gramsCl₂: 1 mole×70.9 g/mole= 70.9 gramsNaF: 2 moles×42 g/mole= 84 gramsIdeal gas lawAn ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law, an equation that relates the three variables if the amount of substance, number of moles n, remains constant and where R is the molar constant of gases:
P×V = n×R×T
STP conditionsThe STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
PART 1You know for F₂:
P= 1.50 atmV= 15 Ln= ?R= 0.082 (atm×L)÷(mol×K)T= 280 KReplacing in the definition of ideal gas law:
1.50 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 280 K
Solving:
(1.50 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 280 K)= n
0.979965 moles= n
Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.979965 moles of F₂ reacts with how much mass of NaCl?
mass of NaCl= (0.979965 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂
mass of NaCl= 114.56 grams
Finally, the mass of NaCl reacted is 114.56 grams.
PART 2In this case, you have the same volume of fluorine gas at STP:
P= 1 atmV= 15 Ln= ?R= 0.082 (atm×L)÷(mol×K)T= 273 KReplacing in the definition of ideal gas law:
1 atm× 15 L = n× 0.082 (atm×L)÷(mol×K)× 273 K
Solving:
(1 atm× 15 L)÷ (0.082 (atm×L)÷(mol×K)× 273 K)= n
0.67 moles= n
Then the following rule of three can be applied: if by stoichiometry of the reaction 1 mole of F₂ reacts with 116.9 grams of NaCl, 0.67 moles of F₂ reacts with how much mass of NaCl?
mass of NaCl= (0.67 moles of F₂× 116.9 grams of NaCl)÷ 1 mole of F₂
mass of NaCl= 78.323 grams
Finally, the mass of NaCl reacted is 78.323 grams.
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How would the membrane shown in the transparency behave if its fatty acid tails consisted mostly of unsaturated fatty acid
The phospholipids in cell membranes, which are made up of unsaturated fatty acids, support membrane fluidity.
The fatty acid tails of phospholipids are made thicker and more difficult to assemble tightly together by unsaturated fatty acids. So, the phopholipids are spaced farther apart by the tails of unsaturated fatty acids. This makes membrane fluidity greater.
Less fluid membranes contain lipids with longer fatty acid tails than do membranes with shorter fatty acid tails. This is due to the fact that lipids with longer fatty acid tails have more surface area available for surface interaction.
Fats that are unsaturated are more likely to oxidise. The more brittle double bonds, which permit more oxygen to react at those locations, are to blame for this.
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A 3.31-g sample of lead nitrate, Pb(NO3)2, molar mass = 331 g/mol, is heated in an evacuated cylinder with a volume of 1.62 L. The salt decomposes when heated, according to the equation2Pb(NO3)2(s) 2PbO(s) + 4NO2(g) + O2(g)Assuming complete decomposition, what is the pressure in the cylinder after decomposition and cooling to a temperature of 300 K? Assume the PbO(s) takes up negligible volume.a)0.380 atmb)0.228 atmc)0.0342 atmd)1.38 atme)none of these
2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)
We have this reaction in a cylinder and also have 300 K. We are going to make some assumptions about these gases inside the cylinder: gases are ideal.
Then we will use this formula:
[tex]p\text{ x V = n x R x T}[/tex]p = pressure in the cylinder
V = volume
n = moles
R = gas constant
T = temperature
Procedure:
1) We must calculate first how many moles we have after the decomposition of Pb(NO3)2, I mean how many moles of NO2(g) and O2(g) we have.
Note: PbO (s) takes up negligible volume (read the text please)
Let's calculate how many moles of Pb(NO3)2 is heated:
Moles Pb(NO3)2 = mass / molecular weight = 3.31 g / 331 g/mol = 0.01 moles
Using the reaction and stoichiometry we will calculate moles for NO2 and O2:
For NO2) 2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)
2 moles Pb(NO3)2 --------- 4 moles NO2
0.01 moles Pb(NO3)2---------- x = 0.02 moles NO2
For O2) 2Pb(NO3)2(s) => 2PbO(s) + 4NO2(g) + O2(g)
2 moles Pb(NO3)2----------- 1 mol O2
0.01 Pb(NO3)2 ------------ y = 0.005 moles O2
------------------------------------------------------------------------------------------------------
2) Inside the cylinder we have:
Total moles = moles NO2 + moles O2 = 0.02 + 0.005 = 0.025 moles
--------------------------------------------------------------------------------------------------------
3) Using Ideal gas law and clearing the pressure:
V = 1.62 L
n = 0.025 moles
T = 300 K
R = 0.0820 atm x L / mol x K
[tex]\begin{gathered} p\text{ = }\frac{0.025\text{ moles x 0.082 }\frac{atm\text{ x L}}{\text{mol x K}}\text{ x 300 K}}{1.62\text{ L}}= \\ =0.3796\text{ atm = 0.380 atm (3 significant digits)} \end{gathered}[/tex]Answer: a) 0.380 atm
Name the layers of the atmosphere from highest air pressure to lowest air pressure
Answer:
From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.
A jeweler suspects that a gold ring in his jewelry collection is fake. He knows that the density of real gold is 19.3 g/cm3. The ring has a mass of 109 grams. When he places the ring in a graduated cylinder filled with water, the water level rises from 20 mL to 26 mL. Is the gold ring fake?
Yes, it is fake! The actual density of the ring is higher than that of real gold.
No, the gold ring is real!
Yes, it is fake! The actual density of the ring is lower than that of real gold.
Yes, it is fake! The actual density of the ring is lower than that of real gold
How to determine if the gold ring is fake or notTo know if the gold ring is fake or not, we shall determine the density of the gold ring. This is shown below:
Density of real gold = 19.3 g/cm³ = 19.3 g/mLMass of gold ring = 109 gVolume of water = 10 mL Volume of water + gold ring = 26 mL Volume of gold ring = 26 – 20 = 6 mL Density of gold ring = ?Density = mass / volume
Density of gold ring = 109 / 6
Density of gold ring = 18.17 g/mL
Comparing the density of the gold ring (i.e 18.17 g/mL) to the density of real gold (i.e 19.3 g/cm³), we can conclude that the gold ring is fake.!
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The standard enthalpy of formation of liquid water is −285. 8 kj/mol. Which equation corresponds to the standard enthalpy of formation for liquid water?.
The equation that corresponds to the formation of liquid water is:
H₂ (g) + 1/2 O₂ (g) [tex]\longrightarrow[/tex] H₂O (l)
What is the standard enthalpy of formation?Standard enthalpy of formation can be defined as the enthalpy change when 1 mole of a compound is produced from its elements in their most stable state of aggregation at a temperature of 298.15 K and pressure of 1 atm.
Enthalpy of formation is the standard enthalpy of reaction where two or more reactants combine together to form one mole of the product. The standard enthalpy of formation is measured in units in kilojoule per mole (kJ/mol), joule per mole, or kilocalorie per gram.
All elements in their standard states such as oxygen gas, solid carbon (graphite) have a standard enthalpy of formation of zero.
The water formation reaction has a negative value of the standard enthalpy of formation indicating that the formation of water is an exothermic reaction. One mole of water is formed from the reaction of one mole of hydrogen gas and a half mole of oxygen gas.
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the effect of baking powder solution on dilute hydrochloric acid solution
Baking powder solution has an effect on a diluted hydrochloric acid solution by causing the release of carbon dioxide from sodium bicarbonate, a component of baking soda.
One molecule of backing soda + one molecule of hydrochloric acid yields one molecule of sodium chloride (table salt) + one molecule of carbon dioxide + one molecule of water.
HCl + NaHCO₃=NaCl+H₂CO₃
However, carbonic acid is quite unstable:
H₂CO₃ = CO₂ + H₂O
HCl + NaHCO₃ = NaCl + H₂O (Water) + CO₂.
Effervescence, which is a fast bubble formation, is how liquid releases CO2.
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write the balanced net ionic equation for the reaction when alcl₃ and na₂s are mixed in aqueous solution. if no reaction occurs, simply write only nr. be sure to include the proper phases for all species within the reaction.
Balanced net ionic equation for the reaction when AlCl₃ and Na₂S are mixed in aqueous solution is 2AlCl₃ + 3Na₂S → Al₂S₃ + 6NaCl
Net ionic equation is the chemical equation that show only those element compounds and ions that are directly involved in the chemical reaction
First the reaction is
AlCl₃ + Na₂S → Al₂S₃ + Knack
Then this is not the balanced equation so we have to identify the number of products and reactants
Then we have simply obtained
a = 2 (AlCl₃)
b = 3 (Na₂S)
c = 1 (Al₂S₃)
d = 6 (NaCl)
Substitute this vale in the reaction then
2AlCl₃ + 3Na₂S → Al₂S₃ + 6NaCl
Then the equal number of reactant and product are seen so this is the balanced reaction
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Please hurry I will make brainliest + 32 points each answer.
refers to a fulcrum. This part is a fixed point. The other part of a lever is a stiff bar that moves around the fulcrum. In this picture of a bicycle brake, label the two parts of the lever. Label the part that moves as A and the fulcrum as B.
The tire which is the moving part is labeled as A while the fulcrum is the silver nut that is close to the tire
What is the lever?The lever is one of the kinds of simple machines. Recall that a simple machine is a device that makes it easier for us to do work. There are three classes of lever and these are;
1) First order lever
2) Second order lever
3) Third order lever
In each of these cases, the levers must contain the load, the fulcrum and the effort. The fulcrum is also called the pivot as it plays the role of providing support for the system of the lever.
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Answer:
pluto
Explanation:
na2s+h2so4 net ionic equation
The product of the ionic reaction is H2S + Na2SO4.
A net ionic equation is a chemical equation that describes only the elements compounds, and ions directly involved in a chemical reaction. The net ionic equation describes only the species participating in the reaction while the full ionic equation also includes the spectator ion. To find the formula of an ionic compound first identify the cation and write down its symbol and charge.
Then identify the anion and note its sign and charge. Finally, the two ions combine to form an electrically neutral compound. A bond is ionic if the electronegativity difference between the atoms is so great that one atom can completely pull an electron away from the other atom. This situation is common in compounds that combine the leftmost elements of the periodic table.
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33 ml of 3 m hydrochloric acid is titrated with sodium hydroxide to form water and sodium chloride. how many moles of sodium hydroxide are consumed in this reaction?
100 mmol of sodium hydroxide are consumed in this reaction.
What is titration ?
A titration is a method for figuring out the concentration of an unknown solution by using a solution with known concentration. Until the reaction is finished, the titrant (the known solution) is typically added from a buret to a known volume of the analyte (the unknown solution). The concentration of the unknown can be determined by knowing the amount of titrant that was added. An indicator is frequently used to indicate the reaction's endpoint or end of the reaction.
Titration, also known as titrimetry, is a common quantitative chemical analysis technique used in labs to determine the unknown amount of an analyte (Medwick and Kirschner, 2010). Due to its reliance on volume measurements, titration is frequently referred to as volumetric analysis. The reagent known as the titrant or titrator is made into a standard solution. A solution of the analyte or titrand reacts with a titrant that has a known concentration and volume to determine concentration. The volume of the titrant that has responded is the titration volume. Titrations can take many different shapes and have different processes and goals. The two most common kinds of qualitative titrations are redox and acid-base titrations.
Convert molarity into number of mols:
HCl + NaOH = H2O + NaCl 100 mmol of NaOH are consumed in the process for every mol of hydrochloric acid ingested (33 mL x 3M = 100 mmol).
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Imagine that a person applies the same amount of net force to this refrigerator and to this box. Describe the difference in acceleration that you would observe. subject Science
Box has more acceleration as compared to the refrigerator because of more weight of a refrigerator.
What is acceleration?Acceleration is defined as the process where the velocity of a body changes. Velocity is the combination of speed and direction. For getting acceleration, a change in speed or change in direction or change occurs in both. There are three types of acceleration i.e. uniform acceleration, non-uniform acceleration, and average acceleration. Uniform acceleration is the motion of an object that travels in a straight line with an increase in velocity at equal intervals of time. The main difference between the acceleration of the box and the refrigerator is that the mass of the box is lower than the refrigerator because of more weight of the refrigerator than the box.
So we can conclude that box has less weight as compared to the refrigerator which leads to more acceleration of the box.
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PREDICT Why do you think the properties of rock change as
temperature and pressure increase? How might this be related to
interactions at the particle level?
Some minerals are only stable under specific pressure and temperature conditions, which leads to metamorphism. Chemical processes transform the minerals in the rock into an assemblage that is stable under the new pressure and temperature circumstances. This happens when pressure and temperature change.
Like heat, pressure increases with depth. The mineral gaps within the Rock may even be forced out by this pressure. Due of this, the mixture is denser.
Metamorphic rocks are created when heat and pressure combine to transform an existing rock into a new one. Contact metamorphism occurs when heated magma makes contact with rock.
Pressure and heat rise with depth. The mineral holes in the rock may really be forced out by this pressure. The upshot of this is that the rocks get denser. Instead of cracking or breaking, the rock flows as a result of the heat and pressure.
Regional metamorphism significantly modifies existing rocks under the intense heat and pressure of tectonic movements.
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can somebody check my answer? my answer is C
Answer:
Explanation:
C looks correct to me!
For the chemical reaction shown 2 H2O2(l) + N2H4(l) > 4H2O(g) + N2(g) determine how many grams of N2 are produced from the reaction of 8.33 g of H2O2 and 6.48 g of N2H4
1) Write the chemical equation.
[tex]2H_2O_{2(l)}+N_2H_{4(l)}\rightarrow4H_2O_{(g)}+N_{2(g)}[/tex]2) List the known and unknown quantities.
Sample1: H2O2.
Mass: 8.33 g.
Sample2: N2H4.
Mass: 6.48 g.
Sample3: N2
Mass of N2 produced: unknown
3) Convert mass to moles.
3.1-Convert the mass of H2O2 to moles of H2O2.
The molar mass of H2O2 is 34.01468 g/mol.
[tex]mol\text{ }H_2O_2=8.33\text{ }g\text{ }H_2O_2*\frac{1\text{ }mol\text{ }H_2O_2}{34.01468\text{ }g\text{ }H_2O_2}=0.244894\text{ }mol\text{ }H_2O_2[/tex]We have 0.244894 mol H2O2.
3.2-Convert the mass of N2H4 to moles of H2O2.
The molar mass of N2H4 is 32.04516 g/mol.
[tex]mol\text{ }N_2H_4=6.48\text{ }g\text{ }N_2H_4*\frac{1\text{ }mol\text{ }N_2H_4}{32.04516\text{ }g\text{ }N_2H_4}=0.202215\text{ }mol\text{ }N_2H_4[/tex]We have 0.202215 mol N2H4.
4) Limiting reactant.
4.1-How many moles of N2H4 do we need to use all of the H2O2?
The molar ratio between N2H4 and H2O2 is 1 mol N2H4: 2 mol H2O2.
[tex]mol\text{ }N_2H_4=0.244894\text{ }mol\text{ }H_2O_2*\frac{1\text{ }mol\text{ }N_2H_4}{2\text{ }mol\text{ }H_2O_2}=0.122447\text{ }mol\text{ }N_2H_4[/tex]We need 0.122447 mol N2H4 and we have 0.202215 mol. We have enough N2H4. This is the excess reactant.
4.1-How many moles of H2O2 do we need to use all of the N2H4?
The molar ratio between N2H4 and H2O2 is 1 mol N2H4: 2 mol H2O2.
[tex]mol\text{ }H_2O_2=0.202215\text{ }mol\text{ }N_2H_4*\frac{2\text{ }mol\text{ }H_2O_2}{1\text{ }mol\text{ }N_2H_4}=0.40443\text{ }mol\text{ }H_2O_2[/tex]We need 0.40443 mol H2O2 and we have 0.244894 mol H2O2. We do not have enough H2O2. This is the limiting reactant.
5) Moles of N2 produced from the limiting reactant.
Limiting reactant: We have 0.244894 mol H2O2.
The molar ratio between H2O2 and N2 is 2 mol H2O2: 1 mol N2.
[tex]mol\text{ }N_2=0.244894\text{ }mol\text{ }H_2O_2*\frac{1\text{ }mol\text{ }N_2}{2\text{ }mol\text{ }H_2O_2}=0.122447\text{ }mol\text{ }N_2[/tex]6) Convert moles of N2 to mass of N2.
The molar mass of N2 is 28.01340 g/mol.
[tex]g\text{ }N_2=0.122447\text{ }mol\text{ }N_2*\frac{28.01340\text{ }g\text{ }N_2}{1\text{ }mol\text{ }N_2}=3.430157\text{ }g\text{ }N_2[/tex]The mass of N2 produced in the reaction is 3.43 g N2.
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What strength of force do you use to move a tennis ball a short distance?
The strength of force that you use to move a tennis ball a short distance is option d: weak .
What is the term force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Therefore, The word "force" has a specific meaning in science. At this level, calling a force a push or a pull is entirely appropriate. A force is not something an object "has in it" or that it "contains."
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Q.
What strength of force do you use to move a tennis ball a short distance?
answer choices
large
medium
strong
weak
What is the mass of an object that
has volume 5 cm3. The density of it is 8 g/cm3.
The amount of matter that makes up a physical body is known as its mass. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this property. The gravitational pull an object has on other bodies is also determined by its mass. The kilogram serves as the SI's fundamental unit of mass.
The substance's density is defined as its mass per unit of volume. Although the Latin letter D can also be used, the most common symbol for density is.
The amount of three-dimensional space that is occupied is measured by volume. It is frequently expressed quantitatively using SI-derived units or different imperial units. Volume and the notion of length are connected.
The mass of an object divided by its volume is the formula for determining density. Mathematically, this is represented as d = m/v, where d stands for density, m for mass, and v for object volume. The common measurements are kg/m3.
Using, d = m/v
m = d * v
m = 8 * 5 = 40 g/cm³
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Volume of 14.00g of nitrogen at 5.64atm and 315k
The volume of a 14.00g of nitrogen at 5.64atm and 315K is 4.59L.
How to calculate volume?The volume of an ideal gas can be calculated using the following ideal gas equation formula;
PV = nRT
Where;
P = pressure (atm)V = volume (L)n = number of molesR = gas law constantT = temperatureAn ideal gas is a hypothetical gas, whose molecules exhibit no interaction, and undergo elastic collision with each other and with the walls of the container.
The number of moles in 14g of nitrogen can be calculated as follows:
moles = 14g ÷ 14g/mol = 1mol
5.64 × V = 1 × 0.0821 × 315
5.64V = 25.86
V = 25.86 ÷ 5.64
V = 4.59L
Therefore, 4.59L is the volume of the gas
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the ss hindenburg contained about 5.33 × 105 g of h2 gas when it burned at lakehurst, new jersey, in 1937. the chemical reaction is as follows: 2h2 o2 → 2h2o how many grams of h2o were produced?
Answer: 4.75 X 10^6 g of H2O were produced in the SS Hindenburg when it burned at Lakehurst, New Jersey in 1937
Explanation:
The SS Hindenburg was burned at Lakehurst, New Jersey in 1937. It contained 5.33 x 105g of H2 gas.
The chemical reaction that took place was:
2H2 O2 -> 2H2O
5.33 X 105g= 559.65g
Therefore, 4.75 x 10^6g of H20 was produced in the process.
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Which of the following statements correctly describe d orbitals?
a. The d orbitals of a group have different energies
b. d orbitals always occur in groups of 5.
c. d orbitals are only possible for n 3.
d. The d orbitals of a group all have the same shape.
Quantum numbers in the bonding of chemicals. ... called p orbitals; a d subshell (l = 2) is made up of five orbitals, or d orbitals, and has a length of two. The magnetic quantum number, ml, which can take the 2l + 1 values l, l 1,..., l, is used to identify each individual orbital.
When electrons jump between an atom's lowest p and d orbitals, they produce a series of spectral lines known as the diffuse series. Between 1 and 2, the total orbital angular momentum varies. The primary focus of CFT is the interaction of the five (n 1)d orbitals with ligands arranged around a transition-metal ion in a regular array. We will concentrate on using CFT to visualize octahedral complexes, which are by far the most prevalent and straightforward to visualize.
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which of the following would you expect to form an ionic bond when combined?
A. So and O
B. K and Ti
C. H and O
D. Na and F
The two elements that one would expect to form an ionic bond when combined is Na and F (option D).
What is ionic bond?Ionic bond is the type of chemical bond where two atoms or molecules are connected to each other by electrostatic attraction.
Ionic bond is formed by a metallic element, which is usually positively charged (+) and a nonmetallic element, which is usually negatively charged (-).
According to this question, sodium (Na) is positively charged while fluorine (F) is negatively charged (-). This means that when Na and F combines chemically, sodium will donate electrons to fluorine atom forming an ionic bond.
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A solution is an example of a(n) _____.
homogeneous mixture
compound
heterogeneous mixture
element
