You are given three materials in the form of solutions –citric acid, magnesium hydroxide and sodium
sulphate. Describe how you will classify the substances as acidic, basic and neutral using purple cabbage
solution

The acceleration of the bike can be obtained as 1.67 m/s^2.

By the use of the formula that we get from the Newton second law we can be able to connect the force that has been exerted on the bike to the acceleration of the bike and that is what we are going to do in the problem that we want to solve.

Given that;

F = ma

m = mass of the bike

a = acceleration of the bike

F = force applied

Then we have;

a = 150 N/90Kg

a = 1.67 m/s^2

The bike is going to have an acceleration of 1.67 m/s^2.

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Explanation:

The polarity of a bond is given by the difference in electronegativity between the two atoms that form said bond.

Among the following compounds, Sodium nitrate and CH₄ are neither an acid nor a base.

Sodium nitrate is an alkali metal salt which is made from the neutralization of a strong base (NaOH) with a strong acid (HNO₃). It has a pH value equal to 7. Therefore, sodium nitrate is neutral.

CH₄ has a neutral pH, of around 7. If a substance is acidic in nature, it must contain in the form where that can be released into water. But CH₄ is not acidic or basic as all the four hydrogen are bound tightly to the carbon atom and cannot be released, i.e., CH₄ has all of its valence electrons in bonding pair and bonding pairs are too stable to donate under normal conditions.

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Answer:

50km per hour.

Part of the speed, distance, time triangle.

To get speed, just divide distance by time. 150/3=50

Hydrogen has a high calorific value, meaning that it can produce a lot of energy when burned.

What is high calorific value?

High calorific value (HCV) is the amount of energy released when a fuel is burned. It is measured in joules or kilojoules per kilogram of fuel, and is used to compare different types of fuel. HCV is important, because it helps to determine the efficiency of a fuel, as well as its cost effectiveness. The higher the HCV, the more energy a fuel will produce from a given amount, making it cost effective and efficient. Different fuels have different HCV values, and the higher the HCV, the more efficient the fuel is.

However, it is not used as a fuel due to its explosive nature. When hydrogen combusts, it produces large amounts of heat and light in a very short period of time. This can cause an explosion if the reaction is not properly controlled. Therefore, hydrogen is not used as a fuel in most applications due to safety concerns.

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the formula below for the application of KVL around i1 is KVL around loop i1: -10V + 5Ω * (I1 - I2) + 10Ω * I1 = 0.

According to Kirchhoff's Voltage Law (KVL), the sum of the voltages around a closed loop in a circuit is equal to zero. In this case, we are applying KVL around loop i1. The equation represents the sum of voltage drops in the loop, where -10V is a voltage source, 5Ω * (I1 - I2) represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and 10Ω * I1 represents the voltage drop across the 10Ω resistor due to the current I1. The equation is set equal to zero to satisfy KVL.

ii. KVL around loop i2: 10Ω * I2 - 5Ω * (I1 - I2) + 2V = 0

Similar to i, this equation represents the application of KVL around loop i2. The 10Ω * I2 term represents the voltage drop across the 10Ω resistor due to the current I2, the -5Ω * (I1 - I2) term represents the voltage drop across the 5Ω resistor due to the difference in mesh currents I1 and I2, and the 2V term represents a voltage source. The equation is set equal to zero to satisfy KVL.

iii. Determine the current i1: Substitute the obtained values into the equation for i1 and solve for I1 in mA.

iv. Determine the current i2: Substitute the obtained values into the equation for i2 and solve for I2 in mA.

v. Determine Vo: Substitute the obtained values for i1 and i2 into the appropriate equation representing the voltage at Vo, and calculate the value in V.

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Answer:

Coductivity

Explanation:

Because heat conducts to them!

Overfilling a volumetric flask make the concentration is to low .

This results in a lower actual concentration. If a volumetric flask is filled so that the top of the meniscus is level with the etched calibration mark, this means that more solvent was added than necessary. The increase in the volume of the solvent results in a lower actual concentration as well.

Overfilling the flask above the graduation mark ruins the volume measurement. In this case, the content inside the volumetric flask should be discarded. A pipette bulb should be used to withdraw and deliver liquids when using a pipette.

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A wet cell is an electrochemical cell in which the electrolyte is a liquid,the given statement is true.

A device known as an electrochemical cell has the ability to produce electrical energy from chemical processes taking place inside of it or utilize electrical energy from external sources to speed up chemical reactions inside of it. The energy in chemicals may be transformed into electrical energy or vice versa using these devices.

A galvanic cell or voltaic cell is an electrochemical device that uses spontaneous redox reactions to transform chemical energy into electrical energy. Example: The typical 1.5 volt cell used in consumer electronics is an illustration of a galvanic cell.

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Approximately 0.135 g of ammonium chloride is needed for 25.00 mL of a 0.1000 M solution.

To calculate the mass of ammonium chloride needed for 25.00 mL of a 0.1000 M solution, we first need to determine the number of moles of ammonium chloride required:

moles of ammonium chloride = volume of solution (in L) x concentration of solution (in mol/L)

Since the volume of solution is given in mL, we need to convert it to L:

25.00 mL = 0.02500 L

Now we can substitute the given concentration of the solution to get the number of moles of ammonium chloride:

moles of ammonium chloride = 0.02500 L x 0.1000 mol/L = 0.00250 mol

Finally, we can calculate the mass of ammonium chloride needed using its molecular weight (53.49 g/mol):

mass of ammonium chloride = moles of ammonium chloride x molecular weight of ammonium chloride

mass of ammonium chloride = 0.00250 mol x 53.49 g/mol = 0.135 g (to three significant figures)

Therefore, approximately 0.135 g of ammonium chloride is needed for 25.00 mL of a 0.1000 M solution.

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the complete question is:

Calculate the approximate mass of ammonium chloride needed for 25.00 ml of a 0.1000 m solution by substituting the value of the molecular weight of ammonium chloride into the following equation:

mass = molarity x volume x molecular weight

Please show all your work and include the units in your answer.

Answer:

NaBr

Explanation:

Answer:

um...id.k how to do chemistry...help please?

Explanation:

NaBr

The matchings for each chromatography are:

1. Gas Chromatography: Vapor travels over a column of tiny beads.

2. Liquid Chromatography: Solvent travels over a column of tiny beads.

3. Thin-layer Chromatography: A sheet of cellulose is placed in a liquid.

4. Paper Chromatography: Solid particles are spread over a flat glass.

Chromatography is a versatile separation technique used to separate and analyze mixtures of substances into their individual components. It is widely used in various fields, including chemistry, biochemistry, forensics, and environmental science.

Chromatography works on the principle of differential migration of components in a mixture due to their interactions with a stationary phase and a mobile phase.

Gas Chromatography: Vapor travels over a column of tiny beads.

Liquid Chromatography: Solvent travels over a column of tiny beads.

Thin-layer Chromatography: A sheet of cellulose is placed in a liquid, which travels up the sheet.

Paper Chromatography: Solid particles are spread over a flat glass or plastic surface and a solvent is allowed to travel up through the solid particles.

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4.5 mol Fe

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

250 g Fe

Step 2: Identify Conversions

Molar Mass of Fe - 55.85 g/mol

Step 3: Convert

\(\displaystyle 250 \ g \ Fe(\frac{1 \ mol \ Fe}{55.85 \ g \ Fe} ) = 4.47628 \ mol \ Fe\)

Step 4: Check

Follow sig fig rules and round; given 2 sig figs.

4.47628 mol Fe ≈ 4.5 mol Fe

Yes, that's correct. When solid strontium oxide (SrO) is added to liquid water (H₂O), a chemical reaction takes place and produces strontium hydroxide (Sr(OH)₂) in aqueous solution.

This reaction will be represented by the following balanced chemical equation:

SrO (s) + H₂O (l) → Sr(OH)₂ (aq)

The reaction is exothermic, which means that it releases heat. The strontium oxide and water react to form strontium hydroxide by exchanging ions. The oxide ion (O₂⁻) from the SrO combines with two hydrogen ions (H⁺) from the water to form water molecules, while the strontium ion (Sr₂⁺) from the SrO combines with two hydroxide ions (OH⁻) from the water to form strontium hydroxide (Sr(OH)₂).

Overall, this reaction is an example of a base-metal oxide reaction, where the metal oxide (SrO) reacts with water to form a metal hydroxide (Sr(OH)₂).

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The strongest interactions between molecules of ammonia (NH3) are hydrogen bonds.

Ammonia molecules consist of one nitrogen atom bonded to three hydrogen atoms. Each hydrogen atom in ammonia carries a partial positive charge, while the nitrogen atom carries a partial negative charge due to the difference in electronegativity. This charge separation allows ammonia molecules to form hydrogen bonds with other ammonia molecules or with other molecules capable of hydrogen bonding.

Hydrogen bonds are attractive interactions between the partially positive hydrogen atom of one molecule and a lone pair of electrons on a highly electronegative atom, such as nitrogen, oxygen, or fluorine, in another molecule. In the case of ammonia, the lone pair of electrons on the nitrogen atom can form hydrogen bonds with the hydrogen atoms of neighboring ammonia molecules or with other molecules that have hydrogen bond acceptor sites.

These hydrogen bonds between ammonia molecules are stronger than the intermolecular forces observed in many other compounds. They contribute to ammonia's higher boiling point and greater stability compared to other compounds with similar molecular weights. The presence of hydrogen bonds in ammonia also affects its physical and chemical properties, such as its solubility in water and its ability to act as a base in chemical reactions.

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The question is incorrect, the correct question is;

Which of the following ground-state electron configurations represents the atom that has the

lowest first-ionization energy?

a) 1s2

b) 1s22s2

c) 1s22s22p6

d) 1s22s22p63s23p1

e) 1s22s22p63s23p3

The correct ground state configuration that represents the atom that has the lowest first ionization energy is 1s² 2s² 2p⁶ 3s² 3p¹.

The first ionization energy is the energy required to remove an electron from the outermost shell of an atom.

Ionization energy decreases down the group as number of shells increases but increases across the period as nuclear charge increase.

As the number of shells increases, the degree of shielding or screening decreases it easier to remove the outermost electron.

The elements whose ground state electronic configurations were shown are;

Helium - 1s²  

Beryllium - 1s² 2s²  

Neon - 1s² 2s² sp⁶  

Aluminum - 1s² 2s² 2p⁶ 3s² 3p¹    

Phosphorus - 1s² 2s² 2p⁶ 3s² 3p³

Aluminium (1s² 2s² 2p⁶ 3s² 3p¹) is a metal so it has the lowest first ionization energy since metals are highly electropositive.

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Answer:

Galaxies, Clusters

Explanation:

The universe is composed of about 100 billion galaxies grouped into clusters.

[RevyBreeze]

Answer:

Galaxies, Clusters

Explanation:

The temperature of the gas sample was \(269 Kelvin (K).\)

To solve this problem, we can use the ideal gas law:

\(PV = nRT\)

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to rearrange the equation to solve for T:

\(T = PV/nR\)

Now we can plug in the given values and solve for T:

\(T = (0.925 atm)(3.51 L)/(1.350 mol)(0.0821 L·atm/mol·K)T = 269 K\)

Therefore, the temperature of the gas sample was \(269 Kelvin (K).\)

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Answer:

An ion is an atom or molecule that has a different number of electrons than protons, so it has a charge.

Explanation:

Trust me please

The second step in the Gram staining procedure involves the flooding of the slide for the one minute is with iodine . The correct option is B. iodine.

There are the four fundamental steps in the Gram stain process , the first is to apply a base color that is the crystal violet. In second step  adding the Gram's iodine as the mordant. In the third step, the Rapid decolorization with the acetone, the ethanol, or the combination of the two and in the four step,  Using the safranin as the counterstain.

Thus, the iodine will be used in the second step in the Gram staining process that involves the flooding in the slide for one minute.

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The waves that move through matter only are called mechanical waves, and the waves that move through space are called electromagnetic waves.

Mechanical waves are waves that require a medium to move. It means that these waves need a substance (solid, liquid, or gas) to travel through, for instance, ocean waves, sound waves, and seismic waves, while Electromagnetic waves (EM waves) are waves that do not need any medium to travel through. They are formed through the vibration of electric and magnetic fields. Examples of electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

They are classified by their wavelength, frequency, and energy. EM waves are much faster than mechanical waves. They travel at the speed of light, which is roughly 299,792,458 meters per second in a vacuum. This means that they travel at approximately 186,282 miles per second. Mechanical waves, on the other hand, can only travel through mediums and at much slower speeds.

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The molarity to make a 100 ml solution by dissolving 5g of a solid solute is 0.45 M. It can be calculated by using molarity formula.

Molarity is the concentration of a solution in terms of moles of solute per liter of solution. It is denoted by the unit "M" (moles per liter).

The molarity of a solution can be calculated as the number of moles of solute divided by the volume of the solution in liters.

First, we need to determine the number of moles of solute:

5g / 110 g/mol = 0.045 moles

Next, we need to convert the volume of the solution from milliliters to liters:

100 ml * (1 L / 1000 ml) = 0.1 L

Finally, we can calculate the molarity:

0.045 moles / 0.1 L = 0.45 M

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question we have

\(denstity = \frac{100}{10} \\ \)

We have the final answer as

Hope this helps you

Answer:

thanks

Explanation:

Carbon = C

Oxygen = O

CO2 = Carbondioxide

Balanced equation :

C + O2 = CO2

Answer:

co2

Explanation:

c+o2-------------> co2

Answer:

0.84kg of gatorade powder

Explanation:

From the question given, we were told that 0.6kg of gatorade powder required 5 gallons of water.

To obtain the mass of gatorade needed for 7 gallons of water, we simply do the following:

0.6kg of gatorade powder required 5 gallons of water.

Therefore, xkg of gatorade powder will require 7 gallons of water i.e

xkg of gatorade powder = (0.6 x 7)/5

xkg of gatorade powder = 0.84kg

Therefore, 0.84kg of gatorade powder will be required.

Chemical chemical X. The silicon is available. This information is not given here. Therefore, we shall use the atomic number as the amount of protons. So, the solution is 17.

A proton, a quasiparticle, is found in the nucleus of every atom.. The particle has an electrical charge that is positive and opposite to the electron's. A single proton would weigh just 1.673? 10-27 kilos if it were isolated, which is only a little bit less than a neutron.

A subatomic particle with a negative charge is an electron. A proton is an unit of matter with the a positive charge. Protons are bound together in an atom's nucleus by the potent nuclear energy. The neutron is a type of subatomic particle sans charge (they are neutral).

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Answer: Since Lithium is positively charged and Sulfate is negatively charged, so SO4 has two negative charges on top of the sulfate ion and the choice is plus to charges on Lithium

Explanation:

 What is the oxidation number of S in Li₂SO4?

O A. +1

O B. +2

O C. +5

OD. +6

Answer:

4K + O2 ---> 2K2O

Explanation:

The valence of Potassium is +1

The valence of oxygen is -2

Thus, two atoms of potassium will attach with one atom of oxygen to form molecule of potassium oxide.

This can be written as

2K + O ---> K2O

However, this is not the balanced equation as oxygen exists as O2 molecule.

Thus, the balanced equation is

4K + O2 ---> 2K2O

Answer:

Mass = 96.07 g

Explanation:

Given data:

Mass of citric acid = ?

Molar mass of citric acid = 192.14 g/mol

Volume of citric acid solution = 0.10 L

Molarity of solution = 5.00 M

Solution:

First of all we will calculate the number of moles from molarity formula. Then we will determine the mass from moles formula.

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

5.00 M = n/0.10 L

n = 5.00 mol/L× 0.10 L

n =0.5 mol

Mass of citric acid:

Number of moles = mass/molar mass

0.5 mol = mass/ 192.14 g/mol

Mass = 0.5 mol  × 192.14 g/mol

Mass = 96.07 g