Determine the molarity of a solution prepared by dissolving 141.6 g of citric acid, C3H5O(COOH)3, in 3500.0 mL of water ?

Answer:

D. acids

Explanation:

I hope this helped

Answer:

Assume that:

n = number of moles

m = mass of substance

M = molar mass (equivalent to atomic weight in the periodic table)

n

=

m

÷

M

The mass (m) of Fe is found.

Your next step is to find the molar mass (M) of Fe.

The molar mass of Fe is 55.9 g/mol.

To find the number of moles for Fe:

n = 112 grams

÷

55.9 g/mol = 2.003577818 moles of Fe(don't round because this is not your final answer or you'll get inaccurate final answer)

Hope it helps you

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Explanation:

Final answer:

The pH of a solution is calculated using the hydrogen ion concentration in mol/L (molarity) by taking the negative logarithm of that concentration.

Explanation:

The property used to calculate the pH of a solution is A. The hydrogen ion concentration in mol/L. To calculate pH, we first measure the concentration of hydrogen (H+) ions in moles per liter (molarity). Then, we take the negative logarithm of this concentration to find the pH value. For instance, a concentration of 0.01 M H+ ions results in a pH of 2 because the negative log of 0.01 is 2. The pH scale typically ranges from 0 to 14, with 7 being neutral. A pH less than 7 indicates an acidic solution, while a pH greater than 7 indicates a basic solution.

Answer:

Every single living thing are comprised of cells. Cells are the fundamental units of structure and capacity in living things. New cells are delivered from existing cells.

Answer: solid,liquid & gas

Explanation:

Three states of water

Water in the solid state e.g Ice block

Water in the liquid state e.g fluids

Water in the gaseous state e.g vapour

Answer:

An internal force acts between elements of the system. ... Only external forces affect the motion of a system, according to Newton's first ... Newton's second law states that a net force on an object is responsible for its ... Prior to manned space flights, rocket sleds were used to test aircraft, missile equipment, and physiological

Explanation:

Answer:

0.3M

Explanation:

Molarity of a solution is given by;

M=n/v

Where;

n= number of moles of solute = mass of solute / molar mass

v= volume of solution

n= mass of CaCl2 / molar mass of CaCl2

Mass of CaCl2 = 0.5

Molar mass of CaCl2 = 40 + (2×35.5)

= 111g/mol

n = 0.5/111 = 0.0045mol

volume, v= 15mL = 15/1000 L = 0.015L

Note that molarity is in mole per liter, hence we convert 15mL to L. 1mL=1/1000L

M =0.0045/0.015

M=0.3mol/L

Therefore, the molarity of the solution is 0.3M

Answer:

102

Explanation:

(20+1+30)*2

you add the total number of atoms that can be found in one molecule of vitamin A then multiply by 2

Final answer:

To find the total number of atoms in two molecules of vitamin A, we multiply each type of atom by two and add the totals together, resulting in 102 atoms.

Explanation:

The question is asking to calculate the total number of atoms in two molecules of vitamin A, based on the given composition of one molecule of vitamin A. According to the question, a single molecule of vitamin A contains 20 carbon atoms, 30 hydrogen atoms, and 1 oxygen atom. To find the total number of atoms in two molecules, we simply multiply the number of each type of atom by two and then add up the totals.

For carbon: 20 atoms × 2 = 40 atoms
For hydrogen: 30 atoms × 2 = 60 atoms
For oxygen: 1 atom × 2 = 2 atoms

Adding these together gives us:
40 (carbon) + 60 (hydrogen) + 2 (oxygen) = 102 atoms

Answer:

All carbohydrates, including sugar, therefore contain the same three elements: carbon, hydrogen and oxygen. Different arrangements of these elements form single units to make different types of carbohydrates. Glucose, for instance, is a single-unit carb with six carbon atoms, 12 hydrogen atoms and six oxygen atoms.

Explanation:

Final answer:

A molecule of glucose is composed of carbon, hydrogen, and oxygen, with the chemical formula C6H12O6, featuring six carbon atoms, twelve hydrogen atoms, and six oxygen atoms arranged in a specific structure.

Explanation:

The elements that make up a molecule of glucose are carbon (C), hydrogen (H), and oxygen (O). The chemical formula for glucose is C₆H₁₂O₆. This indicates that each glucose molecule consists of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. These elements are arranged in a specific structure where each carbon atom forms four bonds connecting to other carbon atoms, as well as to hydrogen and oxygen atoms. The six carbon atoms form the backbone of the glucose molecule, with the oxygen and hydrogen atoms attached to this carbon chain.

Answer: synthesis reaction.

Explanation:

The type of reaction represented by the equation is synthesis reaction.

A synthesis reaction is simply defined as reaction in which two or more substances react to produce a single new substance which has characteristics different from the reactants.

Considering the equation given, we can conclude as follow:

2H₂ + O₂ —> 2H₂0 + energy

The reaction is a synthesis reaction since H₂ and O₂ combined to produce a single product i.e H₂O

Learn more about synthesis reaction:

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Answer:

The pressure will be 1, 83 atm

Explanation:

We use Boyle Mariotte's formula: for a given mass of gas at constant temperature, the pressure and volume vary inversely proportionally. We convert the unit ml into L: 111/1000= 0,111 L and 85/1000= 0,085 L.

P1xV1=P2xV2

P2= (P1xV1)/V2=(1,4 atm x 0,111L)/0,085L=1,83 atm

The physical property that depends on the ability of electrons to move easily is electrical conductivity, which is characteristic of materials like metals that are good conductors of electricity.

B is correct

The physical property of materials that depends on the ability of electrons to move easily is electrical conductivity. Materials with high electrical conductivity, such as metals, allow electrons to flow through them with ease, facilitating the flow of electric current.

Examples include silver and copper, which are widely used in electrical wiring and components due to their excellent conductivity. In contrast, materials with low electrical conductivity or insulators, like rubber or glass, do not allow electrons to move freely, inhibiting the flow of electric current.

When considering the options provided, solubility in water and melting points are not directly related to the movement of electrons, and brittleness is a mechanical property that describes how easily a material can break or shatter.

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The amount of energy transferred between the metal and the water is 500 cal.

The amount of energy transferred between the metal and the water can be calculated using the formula:

Energy = Mass of water × Specific heat of water × Change in temperature

Given that the initial temperature of the water was 25 °C and the final temperature was 35 °C, and the mass of the water was 50 g, we can substitute these values into the formula:

Energy = 50 g × 1 cal/g °C × (35 °C - 25 °C)

= 500 cal

Therefore, 500 cal of energy was transferred between the metal and the water.

Answer:

Upper B a superscript 2 plus, plus 2 upper N upper O subscript 3 superscript minus right arrow upper B a (upper N upper O subscript 3) subscript 2.

I think...

Answer: Upper N upper H subscript 4 superscript plus. and Upper S upper O subscript 4 superscript 2 minus.

Explanation: The spectator ions in this reaction are the ammonium ion and the sulfate ions.

In a reaction, not all of the ions are reacting. The ions not reacting are called the spectator ions.

When we eliminate such ions, we get an overall view of the reaction.

The reaction is:

     2NH₄⁺  + 2OH⁻ + 2H⁺ + SO₄²⁻ ⇒ 2NH₄⁺  + 2H₂O + SO₄²⁻

In ionic equations, water soluble reactants and products are split into their constituent ions while non-ionizing or gaseous reactants and products are represented as formulae or molecules.

 The species that are not reacting and appears on both sides are  2NH₄⁺ and SO₄²⁻ and are the spectator ions.

These non-reactive species are eliminated from the overall ionic equation that shows the reacting ions only.

Answer:c. Hooke and Leeuwenhoek

Explanation: I ask and that answer was right I don't know the explanation

Answer:

C. hooke and leruwenhoek

Answer:

-3

Explanation:

Answer:

I think the answer is

(H2O) water molecule

Explanation:

Complete Question:

Which statements describe the inner planets? Select three options.

A.  Uranus is one of the inner planets.

B. Mercury is one of the inner planets.

C. The inner planets are also called terrestrial planets.

D. The inner planets are larger than the outer planets.

E. Gases escaped from them during the planets’ formation.

Correct Option:

The statements which describe the inner planets are as follows:

B. Mercury is one of the inner planets.

C. The inner planets are also called terrestrial planets.

D. Gases escaped from them during the planets’ formation.

Explanation:

We have the smallest planet in the inner solar system - Mercury, Venus, Earth and Mars, which are so identified for being near to the Sun. A terrestrial planet, a telluric planet, or a rocky planet is a world made up predominantly of rocks of silicate or metal. The outer planets in the solar system are the nearest inner planets to the Earth.

The planets inside are smaller than the outer planets. When the fusion began on the Sun a huge seismic eruption would have originated from the Sun's core and erupted externally. It produced a concussion wave that washed away the inner planets' thick gaseous atmospheres, just like a candle flame bursts out of its wick when you unexpectedly blow.

Answer: listen to relaxing music

Answer:

2.25M

Explanation:

C1V1 = C2V2

25×C1 = 125 × 0.45

C1 = 125×0.45/25

C1 = 2.25M

Answer:

Explanation:

You need the specif heat capacities of both cobalt and lead.

When the two sheets reach the thermal equilibrium their temperatures are equal.

You can use the equations for the thermal heat to find the equilibrium temperature:

Thermal heat released by the hot sheet, lead:

Thermal heat absorbed by the cold sheet, cobalt:

Equal the two equations to solve for T:

I remove the units for easier handling:

Round to 2 significant figures: 35ºC ← answer

Answer: 13.2g of ZnCl2

Explanation:

Answer: 274.75 mL

Explanation:

Initial volume of gas V1 = 250.0 mL

Initial temperature of gas T1 = 30.0 C

Convert temperature in Celsius to Kelvin

(30.0°C + 273 = 303K)

New volume V2 = ?

New temperature T2 = 60.0 C

(60.0°C + 273 = 333K)

Since, volume and temperature are involved while pressure is constant, apply the formula for Charles law

V1/T1 = V2/T2

250.0 mL/303K = V2/333K

Cross multiply

250.0 mL x 333K = 303K x V2

83250 = 303V2

V2 = 83250/303

V2 = 274.75 mL

Thus, the volume will be 274.75 mL

Answer:

8.45 moles are produced

Explanation:

CaCl₂ + Na₂CO₃ → CaCO₃ + 2 NaCl

From the equation, we can see that for every 1 mole of CaCl₂  and 1 mole Na₂CO₃ will give 1 mole of CaCO₃ and 2 moles of NaCl

to calculate how many moles of CaCO₃ ,we simply multiply multiply each by the 8.45 moles of CaCl₂ which will reacts

these is because for every 1 mole of CaCl₂  and 1 mole Na₂CO₃ will give 1 mole of CaCO₃ and 2 moles of NaCl

therefore we have every 1x8.45(8.45)  mole of CaCl₂  and 1x8.45(8.45) mole Na₂CO₃ will give 1x8.45(8.45) mole of CaCO₃ and 2x8.45(16.9) moles of NaCl

8.45 moles are produced in the reaction

Answer:

8.45 moles

Explanation:

The balanced equation for the reaction is given below:

CaCl2 + Na2CO3 → CaCO3 + 2NaCl

From the balanced equation above,

1 mole of calcium chloride (CaCl2) produced 1 mole of calcium carbonate (CaCO3).

Therefore, 8.45 moles of calcium chloride (CaCl2) will also produce 8.45 moles of calcium carbonate (CaCO3)

From the illustration above, 8.45 moles of calcium carbonate (CaCO3) are produced.

Answer:

Mo(CO)5 is the intermediate in this reaction mechanism.

Explanation:

The reaction mechanism describes the sequence of elementary reactions that must occur to go from reactants to products. Reaction intermediates are formed in one step and then consumed in a later step of the reaction mechanism.

In this reaction mechanism, Mo(CO)5 is the product of 1st reaction and then it is used as a reactant in 2nd reaction. So, Mo(CO)5 is the reaction intermediates.

The overall balanced equation would be,

Mo(CO)6 + P(CH3) ↔ CO + Mo(CO)5 +  P(CH3)3

Answer:

In terms of molecularity, Step 1 is

⇒ unimolecular

and Step 2 is

⇒ bimolecular.

Explanation:

EDGE 2023

Answer: it’s d on edunuity. (Hydrogen and oxygen)

Explanation: