Choose all the materials that S-waves cannot travel through.
-water
-solid rock
-sand
-molten rock
-gas

The seven incoming beams in the beam splitter will be split into two groups of three beams each and one beam on its own. The two groups of three beams will have equal intensities, while the lone beam will have half the intensity of each of the other beams.

When a beam enters a beam splitter, it is divided into two separate beams, one reflected and one transmitted. The reflected beams will have the same intensity as the incoming beams, while the transmitted beams will have half the intensity of the incoming beams. Therefore, in the case of the beam splitter, the two groups of three beams will have the same intensity as each other and the lone beam will have half the intensity of the other beams. It is worth noting that the exact division of the beams will depend on the type of beam splitter being used and the angle at which the beams are entering it.

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When 32.0 g of NaCl are dissolved in water and diluted to 0.500 L, 1.10 M of NaCl is the formal concentration (expressed as mol/L or M).

To find the formal concentration, we need to determine the number of moles of NaCl present in the solution. The molar mass of NaCl is 58.44 g/mol, so to find the number of moles, we divide the mass of NaCl by its molar mass:

Number of moles = Mass / Molar mass of sodium chloride (NaCl)

Number of moles = 32.0 g / 58.44 g/mol = 0.548 mol

Next, we need to calculate the formal concentration by dividing the number of moles by the volume of the solution in liters:

Formal concentration = Number of moles / Volume of solution

Formal concentration = 0.548 mol / 0.500 L = 1.10 M.

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Answer:

The volume of the gas when it is released from the tanks will be equal to 10.00 L x (150.0 mmHg / 3.400 x 10⁴ mmHg) = 0.004412 L.

Explanation:

Adding 0.1 mL of diluate to 0.7 mL of diluent will not result in a 1:8 dilution.

What is dilution?

A dilution is a process of reducing the concentration of a solute in a solution by adding more solvent.

A dilution, in general, refers to the process of making a weaker solution from a stronger one.

The following methods for dilution are mentioned in the given statement:

add 1.0 ml of diluate to 8.0 ml of diluent.add 0.1 ml of diluate to 0.7 ml of diluent.

To determine which dilution method does not result in a 1:8 dilution, we must first calculate the amount of diluent in each method.

When 1.0 ml of diluate is added to 8.0 ml of diluent, the dilution is referred to as a 1:8 dilution since the final volume is 9.0 ml.

The volume of diluent is eight times greater than the volume of dilute.

When 0.1 ml of diluate is added to 0.7 ml of diluent, the final volume is 0.8 ml.

The dilution is referred to as a 1:7 dilution, which is not a 1:8 dilution, as the problem asks.

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Answer:

To calculate the amount of hydrogen sulfide gas produced, we first need to write and balance the chemical equation for the reaction:

HCl(aq) + Na2S(aq) → H2S(g) + 2NaCl(aq)

We can see from the balanced equation that for every 2 moles of HCl reacted, 1 mole of H2S is produced. Therefore, we need to calculate the number of moles of HCl present in the 500.0 mL of 2.00 M solution:

Molarity = moles of solute / liters of solution

2.00 M = moles of HCl / 0.5000 L

moles of HCl = 2.00 M × 0.5000 L = 1.00 moles

Since we have excess sodium sulfide, the limiting reagent is HCl, and we can use the stoichiometry of the balanced equation to calculate the number of moles of H2S produced:

1.00 moles HCl × (1 mole H2S / 2 moles HCl) = 0.500 moles H2S

Now we can use the ideal gas law to calculate the volume of H2S gas produced at 25.0 °C and 740.0 mmHg:

PV = nRT

V = nRT / P

V = (0.500 mol)(0.0821 L·atm/mol·K)(298.2 K) / (740.0 mmHg)(1 atm/760.0 mmHg)

V = 0.0128 L = 12.8 mL

Therefore, 500.0 mL of 2.00 M HCl solution will produce 12.8 mL of H2S gas at 25.0 °C and 740.0 mmHg

The incorrect statement is (b): the value of q is positive in an endothermic process.

(a) Enthalpy is a state function, which means that it depends only on the initial and final states of a system and not on the path taken to get there.

(b) The value of q is negative in an endothermic process because heat is flowing into the system from the surroundings, which means that the surroundings are losing heat. By convention, q is positive when heat flows out of a system and negative when heat flows into a system.

(c) The value of q is positive when heat flows into a system from the surroundings, which means that the system is gaining heat.

(d) Heat flows from the surroundings into a system in an endothermic process, which means that the system is absorbing heat from the surroundings.

(e) Internal energy is a state function, which means that it depends only on the initial and final states of a system and not on the path taken to get there.

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Answer:

0.024 mm

Explanation:

The quantity of charge deposited Q = It where I = current = 84.780000 mA = 0.084780000 A and t = time = 3.670000 hours = 3.670000 × 3600 s = 132120000 s.

Also Q = nF where n = number of moles of electrons silver deposited and F = Faraday's constant = 96500 C/mol

So, It = nF

n = It/F = 0.084780000 A × 132120000 s/96500 C/mol = 1120.1134 C/96500 C/mol = 0.012 mol

So, we have 0.012 mol of electrons

Our chemical equation is

Ag⁺ + e⁻ → Ag

Since 1 mol of electrons deposits 1 mol of silver atoms, then, 0.012 mol of electrons deposits 0.012 mol of silver atoms.

Since number of moles of silver atoms, n' = m/M where m = mass of silver atoms deposited and M = molar mass of silver = 107.868 g/mol

So, m = n'M

since n' = 0.012 mol,

m = 0.012 mol × 107.868 g/mol = 1.294 g

Since density of silver ρ = m/V where m = mass of silver deposited = 1.294 g and V = volume of silver deposited

V = m/ρ

Since, ρ = 10.650000 g/cm³

V = 1.294 g/10.650000 g/cm3 =

V = 0.122 cm³

Since the dimensions of the measuring rod are 13.870000 x 3.640000 x 5.980000 cm which represent its length, l, width, w and height, h respectively, the volume of silver deposited V = Ah' where A = area of the rod, lw and h' = thickness of silver deposited

So, V = Ah

V = lwh'

h' = V/lw

= 0.122 cm³/13.870000 cm x 3.640000 cm

= 0.122 cm³/50.4868 cm²

= 0.0024 cm

= 0.024 mm

Enthalpy change of mixing refers to the energy change during the formation of an ideal solution. Volume change of mixing relates to the change in volume resulting from the mixing process.

Enthalpy is a thermodynamic property that represents the total heat content of a system at constant pressure. It encompasses both the internal energy of the system and the work done by or on the system. Enthalpy is denoted by the symbol "H" and is typically measured in units of energy, such as joules (J) or calories (cal). Enthalpy accounts for the energy transferred as heat during chemical reactions or phase changes. Enthalpy is crucial in studying and analyzing various phenomena, including chemical reactions, phase transitions, and energy transfers in thermodynamic systems.

Volume change of mixing, on the other hand, relates to the change in volume resulting from the mixing process. It accounts for the variation in molecular interactions and the resulting effects on the overall volume of the mixture compared to the volumes of the individual components.

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The ketone will have a larger rf value because it is more polar than the alcohol.

Does more polarity suggest a greater or lesser Rf value?

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oxygen has 6 valence electrons and 2 electrons and carbon has 4 electron

Answer:

4!!!!!!!!!!

Explanation:

i got it right

Explanation:

wat exactly do u need to do here?

Further explanation

Given

25 moles of Oxygen(02)

Required The number of molecules

Solution Reaction

2NO+02 → 2NO2

From the equation,

mol NO2: = 2/1 x mol O2 = 2/1 x 25moles = 50 moles

The number of molecules :

\( = 50 \times 6.022 \times 10^{23}\)

\( = 3.011 \times 10{²5}\)

150g•1moles/189.36g= 0.792moles

Answer:

The correct option is;

Element 2

Explanation:

The ionization energy is the energy required to eject an electron from a gaseous ion or atom

The ionization energy increases across the period and increases up the group

The elements with the highest ionization energy are those that have the complete octet structure in their outermost shell, which are the noble gases

Therefore, given that element 2, which has the complete octet structure in the outermost shell, then it is an element of the noble gases which have the highest ionization energy in a period, and therefore has the highest ionization energy.

On the periodic table, the element with 10 electrons is Neon, with ionization energy of 2080.68 kJ/mol which is the second highest after helium, that has only 2 electrons.

the water is heated until it evaporates

Answer: Water is heated until it evaporates.

Explanation: I took the test on edge 2022.

To be an effective disinfectant, bleach needs to contain chlorine bleach as its active ingredient. Chlorine bleach works by breaking down the proteins, enzymes, and other molecules inside bacteria and viruses, ultimately killing them.

Other ingredients such as perm solution, ointments, or foaming agents are not necessary for bleach to effectively disinfect surfaces. It is important to use bleach according to the instructions on the label, as it can be dangerous if not used properly. Additionally, bleach should not be mixed with other cleaning products, as this can create toxic fumes.

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Answer:

process of depositing a thin layer of any superior metal over an object of a cheaper metal, with the help of electric current

Explanation:

I hope this help have an great day and stay health

The element included in the fire tetrahedron that is not part of the fire triangle model is D) Chemical chain reaction.

The fire triangle model consists of three elements that are required for a fire to occur: fuel, oxygen, and heat. However, the fire tetrahedron model includes a fourth element, which is the chemical chain reaction. This element refers to the self-sustaining chemical process that occurs once a fire has started, where heat generated by the fire causes the fuel to release flammable gases, which then react with oxygen to produce more heat and sustain the fire. By understanding and controlling all four elements of the fire tetrahedron, firefighters and other safety personnel can more effectively prevent, contain, and extinguish fires.

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Answer:

2+2H2O.We already learn it

The final concentration of silver ions [ag ], in a solution when 100. ml of 0.10 m agno3(aq) is mixed with 100. ml of 0.050 m hcl (aq) is 0.50 M

We need to comprehend why the temperature changes when AgNO₃ combines with HCl, producing energy in a neutralisation process. The temperature rises when this released energy is absorbed.

AgNO₃  + HCl ⇔ AgCl + HNO₃

Precipitate made of AgCl weighs 1 mole for every mole of Ag + ions.

Molar mass of AgCl is equal to 100 + 10 g.

As a result, 1 mole of Ag ₊ = 110 g of AgCl (x) Plus 10 g of AgCl (x) = 110ml

5.7 = 0.04 moles of Ag +.

Molarity of Ag ₊ /Volume Number of Mole = 0.1L/0.050m = 0.50M

The concentration of Ag+ can be determined using an atomic absorption spectrometer, or you can titrate with a chloride ion to obtain the white ppt of AgCl, then weigh and dry the pellet to obtain an estimate of the ion.

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When 100 grams of nitrogen reacts with 100 grams of hydrogen, the number of molecules of ammonia produced can be calculated as follows: Step-by-step explanation:

According to the balanced chemical equation:N2 + 3H2 → 2NH3The ratio of nitrogen to ammonia produced is 1:2. Therefore, if 1 mole of nitrogen reacts, it produces 2 moles of ammonia. Hence, the number of moles of nitrogen and hydrogen can be calculated as follows:100 g of nitrogen = 100/28 g/mol = 3.57 mol100 g of hydrogen = 100/2 g/mol = 50 mol Since the reaction requires 3 moles of hydrogen to react with 1 mole of nitrogen, only 1/3 of the hydrogen will be used.

Hence, the limiting reactant is nitrogen, which means that all the nitrogen will be consumed in the reaction, and the number of moles of ammonia produced will be equal to the number of moles of nitrogen used, i.e., 3.57 moles. Therefore, the number of molecules of ammonia produced can be calculated using the Avogadro's number, which is 6.022 × 1023 molecules per mole. Hence, the number of molecules of ammonia produced is:3.57 mol NH3 × 6.022 × 1023 molecules/mol = 2.15 × 1024 molecules of ammonia.

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Answer:

Ok So....

Explanation:

The condition in which a body covers equal distance in an equal interval of the time is known to be uniform velocity. if both its magnitude and direction do not change with time then it can be said that the body is at uniform velocity. Hope this helps!~ (Sorry if you get it wrong or I did-)

Answer:

Explanation:

In order to balance equations, simply alter coefficients until all elements are equal on both sides of the reaction symbol ”—>”:

1HBr + 1KOH —> 1KBr + 1H2O

The reaction is already balanced

3HF + Fe(OH)3 —> FeF3 + 3H2O

To match the 3 Flluorines on the right hand side, add 3 to HF and then add 3 to H2O to compensate for the increase in hydrogens.

2HCl + Ca(OH)2 —> CaCl2 + 2H2O

The Chlorine must be balanced, and then hydrogen must be balanced.

Hope this helps! If it did, I would appreciate if you provided brainliest!

Answer:

9000J

Explanation:

Given parameters:

Mass of the jet fighter  = 5kg

Velocity  = 60m/s

Unknown:

Kinetic energy of the jet fighter  = ?

Solution:

The kinetic energy of a body is the energy due to motion of the body.

It is mathematically expressed as;

    K.E  = \(\frac{1}{2}\) m v²

m is the mass

v is the velocity

 So;

     K.E  =  \(\frac{1}{2}\)  x 5 x 60²  = 9000J

The number of moles of acetylsalicylic acid in each tablet is 1.8 × 10⁻³ mol.Moles of acetylsalicylic acid in each tablet

The number of moles of acetylsalicylic acid in each tablet can be calculated by using the formula mentioned below:

Number of moles = Given mass of substance / Molar mass

Given data:

Mass of acetylsalicylic acid in each tablet = 325 mg

Molar mass of acetylsalicylic acid = 180.15 g/mol (calculated from C9H8O4)

Conversion of mass from milligrams to grams will give the result in mols of acetylsalicylic acid present in each tablet:

Number of moles of acetylsalicylic acid in each tablet = (325 mg)/(1000 mg/g) / 180.15 g/mol

= 1.8×10⁻³ mol (rounded to 3 significant figures)

Hence, the number of moles of acetylsalicylic acid in each tablet is 1.8 × 10⁻³ mol.

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Answer:

9.9Xkgms-¹

Explanation:

Let mass of object be xkg

Gravitational pull is 10m/s-1/10=99/10=9.9

9.9xkgms-¹