What structures are present in a bacterial cell, but not in a plant or animal cell?

Answer:

Hazen uses small metal cylinders called pressure bombs to blast minerals with insanely high pressures and temperatures. He's using that knowledge to figure out how ancient minerals might have been involved in the evolution of the first primitive life-forms.

Explanation:

A prescription medication requires 8.00 mg per kg of body weight . The 0.017 grams is required per pound of the body weight. 1.7 × 10⁻² grams is required per pound of the body weight.

The term significant figure is defined as the number of digits in a value, often a measurement, that contribute to the degree of accuracy of the value.

We are given:

Medication requirement = 5.98 mg/kg

To convert the given amount in grams per pounds, we use the conversion factor:

1 kg = 2.20462 lb

1 g = 1000 mg

Converting the value into grams per pounds, we get:

= 8 mg / kg × 1g / 1000mg × 2.20462 lb / 1kg

= 0.017 grams

Thus, 1.7 × 10⁻² grams is required per pound of the body weight.

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Answer:

0.0104 moles of gas in the flask.

Explanation:

To calculate the number of moles of gas in the flask, you can use the ideal gas law equation: PV = nRT. Where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant and T is temperature.

First, you need to convert the pressure from mmHg to atm and the temperature from Celsius to Kelvin. The pressure in atm is 760.0 mmHg / 760 mmHg/atm = 1 atm. The temperature in Kelvin is 17.00°C + 273.15 = 290.15 K.

Next, you need to convert the volume from mL to L. The volume in L is 250.0 mL / 1000 mL/L = 0.2500 L.

Now you can plug all the values into the ideal gas law equation and solve for n: (1 atm)(0.2500 L) = n(0.08206 L·atm/mol·K)(290.15 K). Solving for n gives n = 0.0104 mol.

So there are approximately 0.0104 moles of gas in the flask.

2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams. Density is the mass of a specific material per unit volume.

Density is the mass of a specific material per unit volume. Density is defined as d = M/V, in which d represents density, M is weight, as well as V is volume. Density is generally expressed in grams every cubic centimetre. Water, for example, has a density of 1 gram per square centimeter, but Earth has a density of 5.51 kilograms per cubic centimetre.

Density is sometimes measured in kilos per cubic centimeter (in metre-kilogram-second or SI units). The density of air, for example, is 1.2 kilos per cubic metre. 

density = mass / volume

            =53/ 20

            =2.65g/ml

Therefore, 2.65g/ml is the density of a piece of granite whose volume is 20 mL and mass is 53grams.

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The total number of electrons  Al+3. Fe¹3 Mg² Sn¹² Co²Co³ Lit¹ Cr+3,  Rb Pt+2 are 3, 3, 2, 12, 2, 3, 0, 3.0,2 electrons

Electrons are subatomic particles that have a negative charge and are found outside the nucleus of an atom. They orbit the nucleus in shells or energy levels and are involved in chemical bonding and electricity. Electrons are much smaller in size compared to protons and neutrons, which make up the nucleus of an atom.

Al+3 has 10 electrons (13 protons - 3 electrons).

Fe¹3 has 20 electrons (26 protons - 3 electrons).

Mg² has 10 electrons (12 protons - 2 electrons).

Sn¹² has 50 electrons (50 protons - 12 electrons).

Co² has 27 electrons (27 protons - 2 electrons).

Co³ has 26 electrons (27 protons - 3 electrons).

Li¹ has 3 electrons (3 protons - 0 electrons).

Cr+3 has 21 electrons (24 protons - 3 electrons).

Rb¹ has 37 electrons (37 protons - 0 electrons).

Pt+2 has 76 electrons (78 protons - 2 electrons).

Therefore,  The number of electrons in an atom determines its chemical behavior and the way it interacts with other atoms.

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Best example of a new substance being formed is the reaction between hydrogen gas and oxygen gas to form water.

In this reaction, two hydrogen molecules (H₂) react with one oxygen molecule (O₂) to form two water molecules (H₂O). The resulting substance, water, has entirely different properties from its constituent elements. For example, water is a liquid at room temperature, while both hydrogen and oxygen are gases.

Water also has different chemical and physical properties, such as boiling point, melting point, density, and solubility. These changes in properties indicate that a new substance with a different chemical composition has been formed. The process of hydrogen and oxygen reacting to form water is an example of a chemical reaction, which involves the breaking and forming of chemical bonds between atoms to create new substances.

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Answer:

answer is first one 1 will be less then that of hg coloumn

The best way to measure the pH of a natural solution while out in a forest is to use a portable pH meter or pH test strips specifically designed for field use. These instruments provide accurate and reliable pH measurements and are convenient for outdoor applications.

1. Prepare the necessary equipment: Before heading out to the forest, gather the required tools. You will need a portable pH meter or pH test strips, as well as the necessary reagents or calibration solutions if using a pH meter.

2. Collect the sample: Locate the natural solution you want to measure the pH of, such as a stream, pond, or soil. Use a clean container to collect a representative sample of the solution.

3. Calibrate the pH meter (if applicable): If you are using a portable pH meter, it is essential to calibrate it before taking measurements. Follow the manufacturer's instructions to calibrate the meter using the provided calibration solutions.

4. Conduct the measurement: For pH meters, immerse the electrode into the collected sample. Allow some time for the reading to stabilize, and then record the pH value indicated on the meter's display.

5. Using pH test strips: If you are using pH test strips, dip the strip into the collected sample for the recommended amount of time. Remove the strip and compare the color change with the provided color chart. Determine the corresponding pH value from the chart.

6. Repeat for accuracy: To ensure reliability, repeat the measurement process at least once and compare the results. This step helps confirm the accuracy of your measurements.

7. Record and analyze the data: Note down the pH values obtained and any relevant observations. Analyze the data as needed for your research or monitoring purposes.

By following these steps and using the appropriate equipment, you can effectively measure the pH of a natural solution while in a forest setting.

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The grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g. None of the options provided match the calculated value of 466.64 g.

To determine the grams of magnesium hydroxide (Mg(OH)2) needed to yield 8.00 moles of magnesium chlorate (Mg(ClO3)2), we need to consider the balanced chemical equation for the reaction between magnesium hydroxide and chlorine.

The balanced equation is as follows:

2 Mg(OH)2 + 6 Cl2 → 2 Mg(ClO3)2 + 2 H2O

From the balanced equation, we can see that 2 moles of Mg(OH)2 react with 6 moles of Cl2 to produce 2 moles of Mg(ClO3)2.

Therefore, the stoichiometric ratio is 2 moles of Mg(OH)2 : 2 moles of Mg(ClO3)2.

To calculate the grams of Mg(OH)2 needed, we can use the stoichiometric ratio and the given moles of Mg(ClO3)2.

Given:

Moles of Mg(ClO3)2 = 8.00 moles

Using the stoichiometric ratio, we have:

8.00 moles Mg(ClO3)2 × (2 moles Mg(OH)2 / 2 moles Mg(ClO3)2) = 8.00 moles Mg(OH)2

To convert moles to grams, we need to multiply by the molar mass of Mg(OH)2.

The molar mass of Mg(OH)2 = (24.31 g/mol) + (2 * 16.00 g/mol) = 58.33 g/mol

Grams of Mg(OH)2 = 8.00 moles Mg(OH)2 × 58.33 g/mol = 466.64 g

Therefore, the grams of magnesium hydroxide needed to yield 8.00 moles of magnesium chlorate is approximately 466.64 g.

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Answer

pH = 8.8

Explanation

Given:

Concentration [H+] = 1.58x10^-9 M

Required: pH of [H+]

Solution:

pH = -log[H+]

pH = -log[1.58x10^-9]

pH = 8.8

Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\)

How many peaks do \(Cl_{2}\)'s molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Five is the total number of peaks due to singly charged ions in the complete mass spectrum of chlorine, \(Cl_{2}\).

How many peaks do 's molecular ions have?

The mass spectra of compounds with a single chlorine atom show two molecular ion peaks. This is because there are two isotopes of chlorine, 35Cl and 37Cl.

The molecular ion and fragment ions will both have peaks in the mass spectrum. When a mass spectrum is interpreted, a specific molecule can be located, confirmed, or its quantity can be calculated. the base summit of a mass spectrum's tallest (strongest) peak, caused by the ion with the highest relative abundance

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Answer:

1. NaCl

2. NH4F

3. MgO

4.LiCl

5. KI

6. CaO

Explanation:

In that order

Answer:

The total mass of reactants is 1.09g

Explanation:

You have to add up both masses together :

\(total \: mass = 0.530 + 0.560\)

\(total \: mass = 1.09g\)

Answer:

The plant uses carbon dioxide and water to make an entirely new chemical hence chemical change.

Explanation:

Plants create their own 'food', they turn carbon dioxide water and sunlight to create starch and glucose..

Answer:

The properties of carbon dioxide and oxygen are different.

Explanation:

im taking the exam right now and Im pretty sure it's D The properties of carbon dioxide and oxygen are different.

There are 2.81 × 10^24 moles number of carbon atoms in a 140.0 g sample of glucose (C6H1206).

The term molar mass of a substance is defined as the mass in grams of one mole of the compound. In a substance, the amount of entities present e.g., atoms, molecules, ions. A mole of any substance is 6.022×10²³ molecules.

To calculate, we need to know the number of moles present in 140 grams of carbon.

number of moles = mass/molar mass

molar mass of glucose is = 180 g/mol

Therefore, the number of moles will be ;

140/180 = 0.7778 mole

1 mole of glucose contains 6 moles of carbon;

Then, 0.7778 moles will contain = 4.667 moles

the number of atoms in 1 mole is 6.02 × 10^23 atoms

The number of atoms in 4.667 moles will be :

4.667 × 6.02 × 10^23

= 2.81 × 10^24 atoms

Thus, 2.81 × 10^24 moles number of carbon atoms in a 140.0 g sample of glucose (C6H1206).

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Answer: 0.85 hertz

Explanation: Calculator said so also 0.85 is decimal form for 85

It is an amine, and it has less polar nitrogen-hydrogen and oxygen-hydrogen bonds.

A compound's boiling point is a physical characteristic. These intramolecular linkages between the molecules that make up a chemical affect these physical characteristics.

Alcohols and amino acids have the same kind of intermolecular linkages. The hydrogen bond is the name of this kind of bond.

The electrical attraction between a hydrogen atom from one molecule and an electronegative atom from a nearby molecule is known as a hydrogen bond.

The strength of the bond is in the following order: H.....F > H.....O > H......N

The H....N hydrogen bonds exist in amines, whereas the H....O hydrogen bonds exist in alcohols.

Consequently, the alcohol's hydrogen bonds are stronger and it will impart a higher boiling point on the compound.

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Answer:uses world like

Explanation:

The sample contains 0.986 g of Carbon, 0.107 g of Hydrogen, 0.579 g of Nitrogen, and 0.328 g of Oxygen. This elemental composition matches that of MDMA and not caffeine. There are 0.0099 moles of MDMA present in the sample.

Nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78% of Earth's atmosphere. It is the most abundant element in the atmosphere, and is chemically unreactive under normal conditions. It is an essential element in all forms of life, and is a major component in amino acids and proteins. Nitrogen is also found in all plant and animal tissues, and is a necessary nutrient for their growth.

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Answer:

N2O5

Explanation:

1. Convert to moles

24.5g N * 1mol/14g = 1.75

70.0g * 1mol/16g = 4.375

2. Divide each value by the smallest

1.75/1.75 = 1

4.375/1.75 = 2.5

3. Multiply each by a whole number so that they are both whole numbers

1*2 = 2

2.5*2 = 5

4. These are moles of elements present in the compound

Answer: N2O5

Question: You decompose a compound containing nitrogen and oxygen in the laboratory and produce 24.5 g of nitrogen and 70.0 g of oxygen. Calculate the empirical formula of the compound.

The result in binary would be 10000011110101100000.

By constantly dividing the supplied number by 2 until we receive 0 as the quotient, we can convert a decimal number to a binary number in the simplest way possible. The binary value of the specified decimal number is then obtained by writing the remainders in reverse order. A binary number is made up of two 0s and 1s. Two is used as the base representation for binary numerals. As an illustration, (101)2 (101) 2. Switches can be used to encode and store numbers in binary form. This system is compatible with a variety of digital devices, including computers, calculators, digital TV decoder boxes, cell phones, burglar alarms, watches, and more. Binary values are kept in memory, which is essentially a collection of electronic on/off switches.

The complete question is- Convert 540000 to Binary form.

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Answer:

synthesis

Explanation:

hope this helps

The given reaction is a type of synthesis reaction.  

• The reactions, which takes place when two distinct molecules or atoms associate to produce a distinct molecule or compound is known as synthesis reactions.  

• The synthesis reactions are one of the prime categories of chemical reactions that comprise combustion reactions, single displacement, and double displacement reactions.  

• In synthesis reactions, energy is released and the reaction is exothermic, in some cases, endothermic is also possible.  

• In the given reaction atoms of phosphorus and oxygen combines to produce the compound phosphorus oxide.

Thus, the given case is an example of synthesis reaction.

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ANSWER : 643.1 mL

STEPS:

V1/T1 = V2/T2

Volume of oxygen gas.

A sample of oxygen gas was initially at a temperature of 323 K.

The sample was heated to a new temperature of 377 K.

The volume of the sample at the new temperature of 377 K is 753.8 mL.

We want to find the volume of the sample at the initial temperature of 323 K.

To solve for the initial volume, we can use the combined gas law:

(V1/T1) = (V2/T2), where:

V1 is the initial volume of the gas

T1 is the initial temperature of the gas

V2 is the final volume of the gas

T2 is the final temperature of the gas

Rearranging the equation to solve for V1, we get: V1 = (V2/T2) x T1

Plugging in the values we know, we get:

V1 = (753.8 mL / 377 K) x 323 K

Solving for V1, we get:

V1 = 643.1 mL

Therefore, the volume of the oxygen gas sample at 323 K is approximately 643.1 mL.

ChatGPT

Answer:

combustion reaction, because the products are CO2 and H2O

Answer:

5.89× 10²³ atoms of Ca

Explanation:

Given data:

Mass of Ca = 39.2 g

Number of atoms = ?

Solution:

Number of moles of Ca:

Number of moles = mass/molar mass

Number of moles = 39.2 g/40.078 g/mol

Number of moles = 0.978 mol

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

0.978 mol ×  6.022 × 10²³ atoms / 1 mol

5.89× 10²³ atoms of Ca

The frequency of the electromagnetic wave is 8.1 x 10 ¹⁸ Hz.

The speed of light in a vacuum is given as 3.00 x 10⁸ m/s. The speed of light is also related to the wavelength and frequency of the electromagnetic wave by the equation:

c = λν

where c is the speed of light, λ is the wavelength, and ν is the frequency.

Rearranging the equation to solve for frequency, we get:

ν = c/λ

Substituting the values given in the problem, we get:

ν = (3.00 x 10⁸ m/s) / (3.7 x 10⁻¹¹ m)

ν = 8.1 x 10 ¹⁸ Hz

Therefore, the frequency of the electromagnetic wave is 8.1 x 10 ¹⁸ Hz, and the correct answer is (A) 8.1 x 10 ¹⁸ Hz.

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Answer:

Sulfanomides Warnings

Sulfonamides may cause blood problems, especially if they're taken for a long period of time. These medicines can also cause a serious, even life-threatening, skin rash. Tell your doctor right away if you notice a rash or unusual skin changes.

Explanation:

Answer:

negative

the chage on hydroxide ions os negative

Answer:

The balanced equation for the reaction of NH3 and O2 is: 4 NH3 + 5 O2 -> 4 NO + 6 H2O.

From the balanced equation, it can be determined that for every 4 moles of NH3, 5 moles of O2 are needed to react.

To convert 14.8 g of NH3 to moles, the following calculation can be used: 14.8 g NH3 / 17.03 g/mol = 0.87 moles NH3.

Therefore, the number of moles of O2 needed to react with 14.8 g of NH3 is: 0.87 moles NH3 * (5 moles O2 / 4 moles NH3) = 1.09 moles O2.

To convert moles of a substance to grams, the following calculation can be used: moles x molar mass (in g/mol)

Therefore, the number of grams of O2 needed to react with 14.8 g of NH3 is: 1.09 moles O2 * (32.00 g/mol) = 35.1 g O2