Please help! What is the molarity of 450 mL of solution containing 15 g NaCl?

The solution which could be with 0.1 M NaOH is solution "C"

Explanation:

Answer:I believe it is the Senate

Explanation:

Answer:

C) committee consideration.

Explanation:

Have a nice day :)

Answer:

Kingdom Fungi refers to the group of eukaryotic organisms like fungi, mushrooms, molds and yeasts.

Explanation:

The fungi kingdom is made up of eukaryotic organisms whose cell walls are made of chitin.

Next I will name some characteristics of these organisms:

Answer:

sorry but i need the ptsm because I only have ten

Explanation:

Answer: 0.0250

Explanation: 10 X 0.0750 = .75

.75 / 30 = 0.0250 M

The concentration of KOH(aq) solution is 0.025 M.

In this titration, the volume and concentration of HCl(aq) are given as 10.0 ml and 0.0750 M, respectively. The volume of KOH(aq) is given as 30.0 ml. To find the concentration of KOH(aq) solution, we can use the concept of stoichiometry and the balanced equation for the reaction:

HCl(aq) + KOH(aq) → H2O(l) + KCl(aq)

From the balanced equation, we can see that the ratio of moles of HCl to KOH is 1:1. Therefore, the moles of KOH can be calculated as:

moles of KOH = moles of HCl = volume of HCl × concentration of HCl

Substituting the values:

moles of KOH = 10.0 ml × 0.0750 M = 0.750 mol

The concentration of KOH(aq) solution can be calculated using the moles of KOH and the volume of KOH(aq) solution:

concentration of KOH = moles of KOH / volume of KOH(aq)

Substituting the values:

concentration of KOH = 0.750 mol / 30.0 ml = 0.025 M

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Answer:

the number of atoms in the product is the same as the number of atoms in the reactant

Explanation:

In the product, there are a total of 10 atoms, whereas in the reactant, there are also a total of 10 atoms, the number of atoms in the product is the same as the number of atoms in the reactant.

Answer:

475.26°C

Explanation:

Given parameters:

Mass of object = 50g

Specific heat  = 0.3825J/g°C

Quantity of heat  = 4593Joules

Initial temperature  = 235.16°C

Unknown:

Final temperature = ?

Solution:

The quantity of heat absorbed by a body is a function of the mass, specific heat capacity and temperature change the body undergoes.

Mathematically, this relationship is given as;

              H  = m c Ф

where H is the quantity of heat

           m is the mass of the body

            c is the specific heat capacity

            Ф is the temperature difference

Ф  = final temperature - initial temperature

  Since we are solving for final temperature, let us substitute for other given parameters;

    H  =  m c ( final temperature - initial temperature)

       4593  = 50 x 0.3825 x (F  - 235.16)

       F - 235.16  = 240.1

             F  = 240.1 + 235.16 = 475.26°C

Answer:

chlorine gas and oxygen

Answer:

Climate change can affect coastal areas in a variety of ways

Explanation:

Final answer:

Global warming leads to sea level rise and extreme weather, threatening coastal communities with flooding, erosion, loss of habitat, and freshwater scarcity. Infrastructure must adapt, but preventive action, including reducing greenhouse gas emissions, is essential.

Explanation:

The negative impacts of global warming on coastal communities are profound and long-lasting. With current sea levels rising by approximately 0.25 meters, coastal cities face increased vulnerability to storm surges, which are exacerbated by high tides and heavy waves during storms. This not only threatens human structures but also contributes to the loss of biodiversity as ecosystems are disrupted. Furthermore, as the planet warms, polar ice caps and glaciers continue to melt, leading to a predicted rise in sea levels of two to four feet by 2100. This would result in widespread inundation of shorelines, reduction of island sizes, and possible disappearance of some islands. The alteration in the freeze-thaw cycle of the poles and glaciers may also lead to a lack of freshwater resources and an abundance of saltwater.

Changing patterns of precipitation due to climate change will require reconstruction of water management and food production infrastructures, with further impacts on ecosystems. The changing water flows can lead to the clearing of new areas for agriculture, road construction, and other developments, potentially impacting natural habitats and leading to a shift in biodiversity. Additionally, warming could introduce new economic activities in previously inaccessible Arctic regions, inevitably leading to further environmental degradation through infrastructure development.

Answer:

Increasing the distance

Explanation:

I dont know if this is right but i think it is since the magnets works at a distance so moving it away is the answer i think.

Answer:

it D and A

Explanation:

I solved this on study island before

Answer:

2.00 M

Explanation:

The concentration of a solution is given by

[tex]M=\frac{m}{V}[/tex]

where

m is the mass of solute

V is the volume of the solution

At the beginning, the solution has:

M = 6.00 M is the concentration

V = 100 mL = 0.1 L is the volume

So the mass of solute (HCl) is

[tex]m=MV=(6.00)(0.1)=0.6g[/tex]

Then, the HCL is diluted into a solution with volume of

V = 300 mL = 0.3 L

Therefore, the final concentration is:

[tex]M=\frac{m}{V}=\frac{0.6}{0.3}=2.00 M[/tex]

Answer:

The final concentration is 2 M

Explanation:

Dilution is the procedure to prepare a less concentrated solution from a more concentrated one. It consists of adding more solvent.

The amount of solute (the solute is the solid, liquid or gaseous substance that dissolves in the solvent to produce a homogeneous mixture known as a solution and is generally found in a smaller proportion) does not vary. The volume of the solvent varies, so that the concentration of the solute decreases, as the volume of the solution increases.

In summary, dilution is a procedure by which the concentration of a solution is decreased, generally with the addition of a diluent.

One way to calculate concentrations or volumes in dilutions is through the expression:

Ci * Vi = Cf * Vf

where

In this case:

Replacing:

6 M* 0.1 L= Cf*0.3 L

Solving:

[tex]Cf=\frac{6 M* 0.1 L}{0.3 L}[/tex]

Cf=2 M

The final concentration is 2 M

Answer: increasing atomic number

Explanation: Elements are arranged left to right, top to bottom, from smallest to largest, of increasing atomic number.

Answer:

Metaloids and metals.

Answer:

Explanation:

Climate

Answer:6.022×1023 water molecules

Explanation:

The calculation shows that 3.5 moles of water contain 2.1077 x 10²⁴ molecules.

To answer the question, we need to use Avogadro's number, which is 6.022 x 10²³ molecules per mole.

Write the given quantity and the desired quantity.

Write the conversion factor using Avogadro's number.

Set up the dimensional analysis equation to cancel out units and solve:

There are 2.1077 x 10⁴ molecules in 3.5 moles of water.

Answer:

True

Explanation:

Glaciers are form when the snow is melted and starts to run down the lake or in form of water making it the glacier.

Answer:true

Explanation: graciers need to move

The molecular formula for hexaboron monosilicide is B6Si, which indicates the compound contains six boron atoms and one silicon atom.

The hexaboron monosilicide formula is B6Si. This formula denotes that there are six atoms of boron (B) and one atom of silicon (Si) in a molecule of hexaboron monosilicide.

It is identified as hexaboron because of the prefix 'hexa-' which signifies six in chemical nomenclature, referring to the six boron atoms. Similarly, the use of 'mono-' in monosilicide represents one silicon atom.

This compound exists in crystalline form as a superhard material, and is often studied in the field of material science.

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Answer:

1.00658 atm

Explanation:

765 torr is equal to 1.0079 atm using the conversion factor:  1 atm = 760 torr.

Pressure can be measured in various units depending on the system of measurement being used. Some common units of pressure include:

Each unit of pressure has its specific conversion factors to other units. For example, 1 atm is approximately equal to 101.325 kPa or 760 mmHg. It's essential to use the appropriate unit for the specific application and to ensure consistency when comparing or converting pressure measurements.

The conversion factor:

1 atm = 760 torr.

765 torr ÷ 760 torr/atm = 1.0079 atm

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Answer:

             5.77 L

Solution:

Data Given:

                Moles  =  n  =  0.24 mol

                Temperature  =  T  =  35 °C + 273  =  308 K

                 Pressure  =  P  =  1.05 atm

                 Volume  =  V  =  ?

Formula Used:

Let's assume that the hydrogen gas in balloon is acting as an Ideal gas, the according to Ideal Gas Equation,

                 P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for V,

                 V  =  n R T / P

Putting Values,

                 V  =  (0.24 mol × 0.082057 atm.L.mol⁻¹.K⁻¹ × 308 K) ÷ 1.05 atm

                 V  = 5.77 L

Answer:

We will use ideal gas equation in this problem

PV = nRT

Where

P = pressure of gas or air = ?

V = volume of air = volume of pressure cooker = 5.68 L

T = temperature = 394 K

n = moles of air = 0.355

R = ideal gas equation = 0.0821 L atm / mol K

Putting values

Pressure = nRT / V = 0.355 X 0.0821 X 394 / 5.68 = 2.02 atm.

Answer:Flowing water creates energy that can be captured and turned into electricity. ... The most common type of hydroelectric power plant uses a dam on a river to store water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity.

Explanation:

Resistance is equal to 8 ohms according to ohm's law.

Explanation:

Ohm's law describes the relationship between the voltage, current and resistance.

Ohm's law states that current is directly proportional to voltage and inversely proportional to resistance.

According to Ohm's law V = I × R

The units of voltage are measured in volts, current in amperes, and resistance in ohms.

Given data : Voltage = 48 volts

                     Current = 6 Amps

Substituting given data in ohm's law

48 = 6 × R

R = 8 ohms

Therefore, resistance is equal to 8 ohms fro the given data.

Answer:

Explanation:

The translated question is:

What maximum amount of grams of potassium nitrate (V) can be dissolved in 300g of water at 90 °C

To answer the question you need to consultate the solubiity information for potassium nitrate (V), KNO₃.

The attached table contains the solutibility table for KNO₃ at different temperatures.

At 90ºC it is 203g / 100g water.

Then, to calculate the maximum amount of grams of potassium nitrate (V) that can be dissolved in 300g of water at 90 °C, just multiply by the amount of water:

Answer:

The answer is A

Explanation:

I checked on a temperature converter calculator.

Answer:

100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit.

Explanation:

At the temperature of the North Pole on December 21 (-60°F) an object radiates the least amount of electromagnetic energy.

Electromagnetic radiation consists of waves of the electromagnetic field, which pass through space and carry radiant energy. It involves microwaves, radio waves, infrared, visible light, UV radiation, X-rays, and gamma rays.

Electromagnetic radiation exhibit electromagnetic waves, which oscillate with the electric as well as magnetic fields. Electromagnetic waves are generated due to periodic motion in the electric field or magnetic field.

Depending on the periodic change in these waves that happens and the power formed, different wavelengths of the electromagnetic spectrum are generated. The effects of electromagnetic radiation on chemical compounds and biological organisms depend on the power of electromagnetic radiation and its frequency.  

In order of increasing frequency of radiations and decreasing wavelength of radiations, these waves are arranged in the electromagnetic spectrum.

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There is an increase in the frequency of particle collisions which leads to the increased rate of the reaction.

Explanation:

Hydrochloric acid reacts faster with the powdered zinc than with the equal mass of zinc strips.  

Since the surface area of the Zinc particle increases when it is powdered and has more active spots when compared to less number of active sites in Zinc strips and so the number of collision between the Zinc particles and the particles of Hydrochloric acid also increases and consequently the rate of the reaction also enhances.

So there is an increase in the frequency of particle collisions.

Final answer:

The statement that covalent compounds form crystals is TRUE in the context of covalent network crystals, such as diamond or quartz, but FALSE when referring to typical molecular compounds, which exist as discrete units but can also form molecular crystals held by weaker forces.

Explanation:

The statement 'Covalent compounds form structures called crystals' can be both TRUE and FALSE depending on the context. Unlike ionic compounds, which are known for their crystal lattice structures, molecules of covalent compounds typically exist as discrete units. However, there are also covalent network crystals, such as diamond and quartz, where atoms are covalently bonded in a continuous three-dimensional network, forming a crystalline structure. Additionally, there are molecular crystals that do not form a covalent network but are held together by weaker intermolecular forces.

Atoms arrange themselves into lattices to form a crystal because of a net attractive force between their constituent electrons and atomic nuclei. These crystalline structures are categorized into ionic, covalent, and metallic, based on their bonding. It's important to distinguish between molecular crystals and covalent network crystals when discussing covalent compounds in crystal structures.

The relative energies and forces that hold crystals together are case-dependent, with factors like ionic sizes and stoichiometries influencing the structure of ionic crystals. Covalent network crystals have very high melting and boiling points, are hard and brittle, and do not conduct electricity because they are composed of atoms, not ions.

Answer:False

Explanation:

It’s false

Answer:

6

Explanation:

According to the balanced chemical equation, there are six chlorine atoms on the product side.

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.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

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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Answer:

a is the correct answer

Explanation:

i just did this question and it said a was right

The number of moles of aluminum sulfate produced from the 5.8 moles of aluminum hydroxide and excess sulfuric acid is 2.9 moles.

The balanced chemical equation can be given as:

2 Al(OH)₃ + 3 H₂SO₄ [tex]\rightarrow[/tex] Al₂(SO₄)₃ + 6 H₂O

In the above reaction, the stoichiometry of the amounts of each compound participating in the reaction is:

Al(OH)₃ - 2 moles

H₂SO₄ -  3 moles

Al₂(SO₄)₃ - 1 mole

H₂O - 6 moles

From the above observation, it can be assumed that for every 2 moles of aluminum hydroxide produce 1 mole of aluminum sulfate.

Then, the number of moles produced by 5.8 moles of aluminum hydroxide is x.

[tex]\text{moles of Al}_{2} (\text{SO}_{4} ){3} =\dfrac{\text{5.8moles of Al(OH)}_{3} \times \text {1 mole of Al}_{2} (\text {SO}_{4} ){3}}{\text {2moles of Al(OH)}_{3}}[/tex]

Thus, 2.9 moles of aluminum hydroxide will be produced from the 5.8 moles of aluminum hydroxide.

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