There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the the IUPAC name for N[tex]_2[/tex]O is nitrous oxide.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond.
N[tex]_2[/tex]O, also known as laughing gas, is commonly used by dentists as a sedative and pain reliever during dental procedures. The IUPAC name for N[tex]_2[/tex]O is nitrous oxide.
Therefore, the the IUPAC name for N[tex]_2[/tex]O is nitrous oxide.
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Answer: 1. dinitrogen monoxide ( iupac name for N2O)
2.nitrous oxide (common name for N3O)
Explanation:
Define inference and explain how it is used to form conclusions.
Answer:
an inference is an educated answer based on a piece of information you have been given
Explanation:
e.g. they had pigtails in their long blonde hair.
from this we can infer that I am speaking about a girl
The rate constant for the first order transformation of cyclopropane to propene is 5.40 x 10-2/hr. What is the half-life of this reaction? What fraction of the cyclopropane remains after 51.2 hours? What fraction remains after 18.0 hours? Question: The rate constant for the first order transformation of cyclopropane to propene is 5.40 x 10-2/hr. What is the half-life of this reaction? What fraction of the cyclopropane remains after 51.2 hours?
To solve this type of question we must know the concept of rate law for first order kinetics and first law related to this. Therefore, the half-life of the given compound is 12.8hr.
What is the expression for rate law for first order kinetics?There are two kinds of rate law in chemical kinetics one is differential rate law and other is integrated rate law.
The expression for half life for first order reaction is
[tex]t_{1/2} = \frac{0.693}{K}[/tex]
k= rate constant= 5.40×10⁻²/hr
Substituting all the given values in the above equation, we get
[tex]t_{1/2} = \frac{0.693}{ 5.40 *10^{-2}}[/tex]
On solving this, we get
half life =0.128×10²=12.8hr
Therefore, the half-life of the given compound is 12.8hr.
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If 0.050 mol hydrochloric acid (HCl) is mixed with 0.050 mol of sodium hydroxide (NaOH) in a "coffee cup" calorimeter, calculate the temperature change of 47.0 g of the resulting solution if the specific heat of the solution is 1.00 cal/g·°C and the quantity of heat released by the reaction is 8.8 × 102 cal.
The temperature change of the resulting solution, given that the soluton has a specific heat of 1 cal/g·°C is 18.7 °C
How do I determine the temperature change?We know that heat released is related to change in temperature according to the following formula:
Q = MCΔT
Where
Q is heatM is the mass C is the specific heat capacityΔT is the temperature change
Using the above formula, the temperature change of the solution can be obtained as follow:
Mass of solution (M) = 47.0 gSpecific heat capacity of silver (C) = 1.00 Cal/g·°CHeat released (Q) = -8.8×10² CalTemperature change (ΔT) = ?Q = MCΔT
-8.8×10² = 47 × 1 × ΔT
-8.8×10² = 47 × ΔT
Divide both side by 47
ΔT = -8.8×10² / 47
ΔT = -18.7 °C
Thus, the temperature change is 18.7 °C
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Select the correct answer.
Which of the following locations is best suited for siting a concentrated solar power plant?
Variations in the solar resource are probably the first and main consideration. You can use local weather stations where available, otherwise satellite data (eg from NASA's website) or commercial databases such as Meteonorm. Also there is quite a comprehensive set of data files in the SAM software
Other important considerations are
local environment: plants and animals that could be affected by the system; community support and buy-in.wind, hail, rain, snow profile for the location in question. if there are high/tropical winds then it will increase the plant cost.flight paths and roads near the plant which could be affected by glint and glareproximity to a local town where staff will be able to live both during construction and later during operationproximity to a electricity transmission line with available capacityavailability of water for mirror cleaning and steam blowdown.cost (and availability) of electricity in the area. If remote, electricity/energy may be very expensive, which will enable a high price for electricity sold from the plant.quality of road to the plant, required to bring equipment and materials to sitepolitical stability of the region -- potential impact on perceived bankability of the project.
Many of these items will have a large influence on the cost of the plant and/or the revenue it will generate during its life. Others relate to environmental and risk factors and are also critically important to consider.
Hope this helps!!
Calculate the standard enthalpy change for the reaction
2A+B⇌2C+2D
Use the following data:
Substance ΔH∘f
( kJ/mol)
A -231
B -409
C 177
D -515
Express your answer to three significant figures and include the appropriate units.
The standard enthalpy change for the reaction 2A + B ⇌ 2C + 2D is 195 kJ/mol.
What is the enthalpy of a reaction?The enthalpy of a reaction is a measure of the heat changes that occur when reactants form a product in a given reaction.
The enthalpy change of a reaction can be calculated using the formula given below:
Enthalpy of reaction = sum of enthalpies of the products - sum of enthalpies of the reactants
Considering the given reaction: 2A + B ⇌ 2C + 2D
Enthalpy of reaction = (2 * C + 2 * D) - (2 * A + B)
Enthalpy of reaction = {[2 * 177 + 2 * (-515)] - [2 * (-231) + (-409)]}
Enthalpy of reaction = 195 kJ/mol
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By what factor would the average kinetic energy of the particles be increased if the
temperature a substance was increased from -49C to 287C?
Average kinetic energy is the average sum of all kinetic energy of all the molecules of gases. Therefore, the new kinetic energy is 48 times the original kinetic energy.
What is kinetic energy?
It is a energy which is possess by a moving object. It is very difficult to find the correct value of kinetic energy so we find average kinetic energy. Which is very easy to calculate as compared to calculating kinetic energy
Average kinetic energy is directly proportional to temperature. It is not dependent on the type of gases or mass of gases
Mathematically,
K.E=2/3KT
Where,
K= Boltzmann constant
T is the temperature
Gases at higher temperature will have higher average kinetic energy. For every 10 degree rise in temperature, kinetic energy of reaction gets double. There are 24 times 10 between the given temperature -49C to 287C. So, the new kinetic energy is 48 times the original kinetic energy.
Therefore, the new kinetic energy is 48 times the original kinetic energy.
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4. a type of civil engineering concerned with moving people and goods
You make a stock solution using 17.26 mg of a dye with a molar mass of 225.8 g/mol and you add water until you reach a volume of 500.0 mL. What is the concentration of the dye in the stock solution? Give your answer in all of the units requested (M, mM)
Answer:
Molar mass of dye = 225.8 g/mol
Mass of dye = 17.26 mg
Volume of stock solution = 500.0 mL
Concentration of dye (M) = (17.26 mg/225.8 g/mol) / (500.0 mL/1000 L) = 0.000769 M
Concentration of dye (mM) = 0.769 mM
According to the molar concentration, the concentration of the dye in the stock solution is 15.04×10⁻³M and 15.04×10⁻⁶mM.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.
Substitution of values in formula gives, M= 0.017/225.8×1/0.5=15.04×10⁻³ M or 15.04×10⁻⁶ mM.
Thus, the concentration of the dye in the stock solution is 15.04×10⁻³M and 15.04×10⁻⁶mM.
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__Sr(OH)2 + Al2 (SO4)3 —> __ SrSO4 +___ Al(OH)3
The balanced chemical equation is 3 Sr(OH)₂ + Al₂(SO₄)₃[tex]\rightarrow[/tex] 3 SrSO₄ + 2 Al(OH)₃.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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What mass of CO2 will be produced when 25.0 g of C8H18 react completely in the following equation? C8H18 + 25 O2 --> 16 CO2 + 18 H2O
The mass of [tex]CO_2[/tex] that will be produced when 25.0 g of [tex]C_8H_{18[/tex] reacts completely in the equation would be 154.035 g.
Stoichiometric problemFrom the balanced equation of the reaction which goes thus:
[tex]C_8H_{18} + 25 O_2 -- > 16 CO_2 + 18 H_2O[/tex]
The mole ratio of [tex]C_8H_{18[/tex] that reacts and the [tex]CO_2[/tex] that is produced is 1:16.
Recall that: mole = mass/molar mass
The molar mass of [tex]C_8H_{18[/tex] is 114.23 g/mol
Mole of 25.0 g [tex]C_8H_{18[/tex] = 25/114.23
= 0.22 mol
Since the mole ratio is 1:16, the moles of [tex]CO_2[/tex] that will be produced by 0.22 mol of [tex]C_8H_{18[/tex] would be:
0.22 x 16 = 3.50 mol
The molar mass of [tex]CO_2[/tex] is 44.01 g/mol, thus, the mass of 3.50 mol of the gas can be determined as:
Mass = mole x molar mass
= 3.5 x 44.01
= 154.035 g
In other words, the mass of [tex]CO_2[/tex] that will be produced when 25.0 g of [tex]C_8H_{18[/tex] reacts completely in the equation would be 154.035 g.
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In a triple bond, three pairs of electrons are shared between two atoms. Based on this information, draw the hydrogen atoms so that each carbon atom has four bonds. Then record the number of hydrogen atoms you drew using a text box.
sorry it's not clear anyway hope you can see the H and C .. the hydrogen atoms are 8
Conservation of Mass
In the following reaction, H2 + F2 → 2HF, a student reacts 8g of H2 with 20g of F2. Assuming no mass is lost (due to the Law of Conservation of Mass), how many grams of HF is produced?
You can use the following Sentence Stem to formulate your answer.
Conservation of mass is mass _________ be _______ or _____________. In this reaction 8 _____ of ___________ + ____ grams of F2 produce ___ moles of ____________, the _____________. Since there is no _________ of ____________ due to the law of _________________ of ___________. There will be _____ grams of HF _______________.
The two main postulates that was given by Antoine Lavoisier are, oxygen play an important role in combustion and the other is mass of the reactant and product is conserved. Therefore the mass of HF is 28grams.
What is law of conservation of mass?According to Law of conservation of mass, mass can neither be created nor be destroyed. Mass can only be transformed from one form to another. The law of conservation of mass was given by Antoine Lavoisier. Every reaction in nature follow the law given by Antoine Lavoisier that is mass is always conserved.
H[tex]_2[/tex] + F[tex]_2[/tex] → 2HF
Mass of H[tex]_2[/tex]=8Grams
mass of F[tex]_2[/tex]= 20grams
According to law of conservation f mass
mass of H[tex]_2[/tex] + mass of F[tex]_2[/tex] = mass of HF
Substituting all the given values, we get
8grams + 20grams =mass of HF
mass of HF=28grams
Therefore the mass of HF is 28grams.
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The compound below can be prepared with an alkyl iodide and a suitable nucleophile. Identify the alkyl iodide and the nucleophile that you would use. For an anionic nucleophile, you do not need to draw the counterion.
The compound below can be prepared with an alkyl iodide and a suitable nucleophile. Identify the alkyl iodide and the nucleophile that you would use. For an anionic nucleophile, you do not need to draw the counterion.
Alcohol iodide nucleophile Is identified as the alkyl iodide and the nucleophile that would be used.
What is nucleophile?Nucleophile is defined as a chemical species that provides an electron pair to create a chemical bond in response to an action. A nucleophile typically has one electron pair and is negatively charged or neutral.
Alcohols with alkyl halides of hydrogen. Alcohols often undergo a nucleophilic substitution reaction to produce an alkyl halide and water when exposed to HBr or HCl. Alkanes and alcohols can be converted into alkyl halides through a nucleophilic substitution process.
Thus, alcohol iodide nucleophile Is identified as the alkyl iodide and the nucleophile that would be used.
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Please help, I’ll mark your answer as brainliest.
Answer:
Radon, Bismuth, Lead, and Thallium
Explanation:
Its from smallest to largest. Hope it helps!
As astronauts take off in a rocket moving away from earth how does their mass and or weight change
Answer:
As you travel away from the Earth's surface, your mass stays the same but your weight reduces as gravitational pull decreases. For example, an astronaut orbiting the Earth and floating weightlessly in the cabin still has the same mass.
Explanation:
A sample of nitrogen dioxide gas occupies 625 cm3 at 70.0 °C and 15.0 psi. What is the final Celsius temperature if the volume is 545 cm3 at 15.0 psi?
The final temperature of the sample of nitrogen dioxide gas that occupies 625 cm³ at 70.0 °C and 15.0 psi is 299.12K.
How to calculate temperature?The temperature of a gas can be calculated by using the combined gas law formula as follows:
P₁V₁/T₁ = P₂V₂/T₂
Where;
P₁ = initial pressureV₁ = initial volumeT₁ = initial temperatureP₂ = final pressureV₂ = final volumeT₂ = final temperatureAccording to this question, a sample of nitrogen dioxide gas occupies 625cm³ at 70.0 °C and 15.0 psi. The final temperature can be calculated as follows:
15 × 625/343 = 15 × 545/T
27.33T = 8175
T = 299.12K
Therefore, 299.12K is the final temperature of the sample of nitrogen dioxide gas.
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When heated, calcium carbonate, CaCO3(s) , decomposes to calcium oxide, CaO(s) , and carbon dioxide, CO2 . Using relevant data from your book's appendices, calculate the heat evolved or consumed when 15.0 g of calcium carbonate are decomposed. answer: kJ
As per the standard data, the heat evolved during one mole of calcium carbonate decomposes is 177.8 KJ. Thus 15 g or 0.15 moles of calcium carbonate when decomposed will produce 26.67 KJ of heat.
What is reaction enthalpy?Reaction enthalpy of a substance is the heat evolved or absorbed during a reaction. Reaction enthalpy is negative for an exothermic reaction and positive for an endothermic reaction.
Molar mass of calcium carbonate = 100 g.
no.of moles in 15 g = 15 /100 = 0.15 moles.
One mole or 100 g of calcium carbonate decompose to evolve 177.8 KJ according to the scientific record.
Thus, heat evolved by the decomposition of 0.15 moles is 0.15 × 177.8 KJ = 26.67 KJ.
Hence, the heat evolved during the decomposition of 15 g of calcium carbonate is 26.67 KJ.
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Consider the following reaction:
2NiO(s)→2Ni(s)+O2(g)
If O2 is collected over water at 40.0 ∘C and a total pressure of 746 mmHg , what volume of gas will be collected for the complete reaction of 24.23 g of NiO ?
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the volume of gas will be collected for the complete reaction of 24.23 g of NiO is 4.19L.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of gas sample
V= volume of gas sample
n =number of moles of gas sample
T =temperature of gas
R = Gas constant = 0.0821 L.atm/K.mol
Substituting all the given values, we get
Molar mass of NiO=74.6928g/mol
mass of NiO= 24.23 g
Number of moles of NiO =0.324
From reaction the molar ratio between NiO and O[tex]_2[/tex] is 2:1
Number of moles of O[tex]_2[/tex] =0.16moles
applying ideal gas equation
0.98atm×V =0.16× 0.0821×313
V =4.19L
Therefore, the volume of gas will be collected for the complete reaction of 24.23 g of NiO is 4.19L.
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If the initial sample is 2.00 g, what mass of the original iridium‑192 remains after 5 days?
The mass of the original iridium‑192 remains after 5 days is 1.16 g.
What is mass?Mass is defined as the body's resistance to acceleration when a net force is applied; a measure of inertia. Gravity and inertia, which are the two main forces influencing how objects move in space, make mass crucial.
Radioactive isotope iridium-192 (Ir-192) is iridium. It is a gamma emitter with a 74-day half-life. 1/4 of the sample will experience radioactive decay in 3.36 days. The substance's decay constant can be found. Subtract ln 2 from the substance's decay constant.
λ = ln2 / T 1/2
λ = ln2 / 5 1/2
λ = 1.16 g
Thus, the mass of the original iridium‑192 remains after 5 days is 1.16 g.
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Which of the following is a reasonable electron configuration?
O1s²1p5
O1s²2s²2p8
O1s²2s²2d4
O1s²2s²2p6
Answer:
Explanation:The electronic configuration of Oxygen is 1 s 2 2 s 2 2 p 4 .
1s²2s²2p⁶ is a reasonable electron configuration. Therefore, the correct option is option D.
What is electron configuration?The arrangement of an atom's or molecule's (or other physical structure's) electrons in their atomic or molecular orbitals is known as the electron configuration in atomic physics or quantum chemistry. For instance, the neon atom's electron configuration is 1s2 2s2 2p6, which means that 1, 2 and 6 electrons, respectively, are present in each of the 1s, 2s, and 2p subshells.
According to electronic configurations, each electron moves individually within an orbital while being surrounded by an average field produced by all other orbitals. Slater determinants and configuration state functions are used to mathematically describe configurations. 1s²2s²2p⁶ is a reasonable electron configuration.
Therefore, the correct option is option D.
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a) Are Albumin compact, globular proteins?
[tex]{ \blue{ \sf{Albumin}}}[/tex] is a soluble and globular monomeric protein encoded by chromosome 4 that comprises about half of the protein found in blood serum. It functions as a carrier protein for steroids, fatty acids, and thyroid hormones as well as stabilizing extracellular fluid volume.
whoever responds first will get brainliest :) Reactions must be balanced because of the conservation of matter, which means all of these EXCEPT which one (Which is WRONG about balancing)?
A. Atoms cannot be destroyed
B. New elements, but not new substances can form New substances
C. New substances, but not new elements can form
D.Atoms cannot be created
This hydrocarbon is incomplete. Draw the hydrogen atoms and the bonds connecting them to carbon atoms such that each carbon atom has four bonds. Then record the number of hydrogen atoms you drew using a text box.
Answer:
no. of H = 10
no. of C = 4
C4H10
The combustion of propane may be described by the chemical equation C₂H₂(g) +50,( 3 CO₂(g) + 4H₂O(g) How many grams of O₂(g) are needed to completely burn 20.9 g T, H, (g)? mass O₂: go2
so basically maybe you should
There are a number of factors that alter the bioavailability of minerals from foods. Complete each sentence with either increases or decreases.
decreases increases
Phytic acid ______ the absorption of zinc from grains.
Oxalic acid _____ the absorption of calcium from spinach.
Refinement of grains _____ the mineral content of grain products.
Vitamin C _____ the absorption of iron from foods.
Vitamin D ____ the absorption of calcium from foods.
Each sentence about the bioavailability of minerals in foods should be completed with either increases or decreases as follows:
Phytic acid decreases the absorption of zinc from grains.Oxalic acid decreases the absorption of calcium from spinach.Refinement of grains decreases the mineral content of grain products.Vitamin C increases the absorption of iron from foods.Vitamin D increases the absorption of calcium from foods.What are nutrients?Nutrients can be defined as the chemical compounds (substances) or minerals that are present in food, and they are needed by the body of a living organism for healthy growth, reproduction, development, proper functioning, and reproduction.
What are the classes of nutrients?In Science, there are five (5) main classes of nutrients and these include the following:
ProteinFatCarbohydrateVitaminsMineralsIn conclusion, phytic acid, oxalic acid, and refinement of grains are factors that decrease the bioavailability of minerals in foods while Vitamin C and Vitamin D increases the bioavailability of minerals in foods.
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Find the value of xx, yy, and zz, in the rhombus below. 40, x-5, 6y-2, 5z+5.
A rhombus is a quadrilateral with all the sides of equal measurements. Therefore, the value of x, y, and z are 45, 7, and 7, respectively.
What is a rhombus?A rhombus is a quadrilateral with all the four sides having equal measurements. The opposite sides are parallel to each other which gives it the shape of a kite.
The value of x, y, and z can be calculated as all the sides have equal value.
x - 5 = 6y -2 = 5z + 5 = 40
Therefore, on solving each equation separately we get.
x - 5 = 40
x = 40 + 5
x = 45
6y - 2 = 40
6y = 40 + 2
6y = 42
y = 42/ 6
y = 7
5z + 5 = 40
5z = 40 - 5
5z = 35
z = 35/ 5
z = 7
Therefore, the values of x, y, and z are 45, 7, and 7, respectively.
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This hydrocarbon is incomplete. Draw the hydrogen atoms and the bonds connecting them to carbon atoms such that each carbon atom has four bonds. Then record the number of hydrogen atoms you drew using a text box.
Answer:
H/Hydrogen atoms = 12
reason:
no. of carbon=5
so it'll be C5H12
How many kilojoules are released when 2.60 mol of H2O2 reacts?
On the decomposition of 2.60 moles of hydrogen peroxide, 254.8 KJ energy will be released.
What is a decomposition reaction?A decomposition reaction can be defined as a reaction in which a chemical compound breaks down into two or more simple compounds. The general form to express a decomposition reaction is:
AB → A + B
Most decomposition reactions accept energy in the form of heat, radiation, or electricity. The decomposition reaction of hydrogen peroxide is shown below:
2H₂O₂(l) → 2H₂O (l) + O₂(g) ΔH = - 196 KJ/mol
2 moles of hydrogen peroxide decomposes energy released = 196 KJ
2.60 of H₂O₂ decomposes energy released = 196 ×2.60/2 = 254.8 KJ
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How many nickel atoms would be presented in a 100.0 grams Ni sample
No. of moles of Ni = 1.7 mole
No of atoms of Ni = 1.023× 10²⁴ atom
What is Avogadro's No?A mole is equivalent to 6.022 × 10²³ units of that material (such as atoms, molecules, or ions). Avogadro's number, or Avogadro's constant, is 6.022 × 10²³
For instance, a mole of carbon-12 atoms weighs 12 grammes. Additionally, a mole of hydrogen atoms weighs 1 gram, but a mole of hydrogen molecules weighs 2 gram.
Given that,
mass of nickel (m) = 100 gm
Now, no. of moles of Ni = mass / molar mass
= 100 gm/ (59 gm/mole)
[ As we know, molar mass of Nickel (Ni) = 59 gm/mole ]
= 1.7 mole
Now, no of atoms = no. of mole × Avogadro's No. ([tex]N_{A}[/tex])
= 1.7 mole × 6.022 × 10²³ atom/mole
= 10.23 × 10²³ atom
= 1.023× 10²⁴ atom
Thus, no. of moles of Ni = 1.7 mole
no. of atoms of Ni = 1.023× 10²⁴ atom
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The following image shows a man running with a training parachute. The man is pushing himself forward with a force of 30 newtons. The net force on the man is 10 newtons forward. What is the parachute doing?
It is pushing the man forward with 10 newtons of force.
It is reducing the force by increasing the runner's mass.
It is making the runner travel at a constant speed.
It is pulling the man backward with 20 newtons of force.****
The net force on the man is 10 newtons forward. The parachute is pushing the man forward with 10 newtons of force. Therefore, option A is correct.
What is net force ?The vector sum of the forces exerted on a particle or object is known as the net force. The original forces' impact on the motion of the particle is replaced by the net force, which is a single force.
In accordance with Newton's second rule of motion, it causes the particle to accelerate at a rate equal to the sum of all those actual forces.
The vector sum of all forces exerted on an object is known as the net force. The net force acting on an object is zero when it is in equilibrium, whether it is at rest or moving at a constant speed. Only when all of a vector's components are zero can a vector have a magnitude of zero.
Thus, option A is correct.
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Answer: A
Explanation: