A 210.00 g sample of water with an initial temperature of 29.0°C absorbs 7,000.0 J of heat. What is the final temperature of the water?
Note: Use C (capital C) for degrees Celsius when typing units. So it might look like 35C or 2.03 J/gC. Give your answer in 3 sig figs.

Answer:

Atoms themselves do not have a smell. Molecules do.

Explanation:

What happens is that particular molecules bind to receptors in our nose, activating nerves, that then send signals to our brain, which we then interpret and perceive as “smells”. Different molecules bind to different receptors, which is why we can perceive a number of different smells

Flow sheet for synthesis gas production process: Hydrocarbon preheater → Combustion chamber Reactor → Waste-heat boiler → Carbon removal unit → water-cooler scrubber → Synthesis Gas.

Temperature and Pressure Conditions:

Hydrocarbon Preheater: High temperature (depends on the specific hydrocarbon used)

Combustion Chamber: High temperature (due to controlled partial combustion)

Reactor: High temperature (to promote pyrolysis and gas formation)

Waste-heat Boiler: Moderate temperature (to recover heat from reactor effluent)

Carbon-Removal Unit: Moderate temperature (to remove carbon from gas)

Water Cooler-Scrubber: Low temperature (to cool and scrub the gas)

Synthesis Gas: At atmospheric pressure (or specified process pressure).

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Answer:

Volume = 3.4 L

Explanation:

In order to calculate the volume of CO₂ produced when 15.2 g of CaCO₃ is heated, we need to first write out the balanced equation of the thermal decomposition of CaCO₃:

CaCO₃ (s) + [Heat] ⇒ CaO (s) + CO₂ (g)

Now, let's calculate the number of moles in 15.2 g CaCO₃:

mole no. = \(\mathrm{\frac{mass}{molar \ mass}}\)

                 = \(\frac{15.2}{40.1 + 12 + (16 \times 3)}\)

                 = 0.1518 moles

From the balanced equation above, we can see that the stoichiometric molar ratios of CaCO₃ and CO₂ are equal. Therefore, the number of moles of CO₂ produced is also 0.1518 moles.

Hence, from the formula for the number of moles of a gas, we can calculate the volume of  CO₂:

mole no. = \(\mathrm{\frac{Volume \ in \ L}{22.4}}\)

⇒ \(0.1518 = \mathrm{\frac{Volume}{22.4}}\)

⇒ Volume = 0.1518 × 22.4

                 = 3.4 L

Therefore, if 15.2 g of CaCO₃ is heated, 3.4 L of CO₂ is produced at STP.

(a) Because acid is caustic, dolphins can perish from exposure to it. Acids are compounds that give other things protons (H+). Acid can react with the proteins and lipids in dolphins' skin when they come into touch with it, leading to chemical burns and damage to the underlying tissue. Systemic consequences from this include death.

(b) Because chlorine is a potent oxidizer, it interacts with red-hot iron powder to produce Iron(III) chloride (FeCl3) rather than Iron(II) chloride (FeCl2). FeCl3 is created when chlorine at high temperatures rapidly accepts electrons from iron atoms. Contrarily, iron interacts with HCl, a less potent oxidizer than chlorine, to produce FeCl2.

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Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

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Both sides of the reaction have an identical mass and charge is called a balanced chemical equation.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same overall charge and number of atoms for each component. In other words, both sides of the reaction have an identical mass and charge.

To satisfy the law of conservation of mass, which states that "Total mass of the products is equal to Total mass of all the reactants," is the most crucial aspect in balancing chemical equations.

The law of conservation of mass will be broken by an unbalanced chemical equation. If it does, it will suggest that mass is either created or destroyed, which is not feasible.

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Answer: B. all the resources used to produce any goods and services

Explanation:

      The factors of production are all the resources used to produce any goods and services. This means our answer is option B.

      This includes, but is not limited to, land, labor, capital, and entrepreneurship.

The answer is- Volume of the sample of argon gas is 47.29 L.

Ideal gas Law: The equation that relates the pressure (P), temperature (T), Volume (V) and moles (n) of a gas is known as ideal gas law and it is expressed as:

\(\[\begin{array}{l}{\rm{PV = nRT}}\\{\rm{where}}\\{\rm{R\ is\ the\ gas\ constant}}\end{array}\]\)

Define STP conditions.

n = 0.960 mol

T = 27°C\(= 27 + 273 = 300 K\)

P = 380 torr =\(\frac{380}{760} =0.5 atm\)

R = 0.0821 L.atm/mol.K

\(V = \frac{nRT}{P} = \frac{(0.960\ moles) * (0.0821\ L.atm/mol.K) *(300\ K)}{0.5\ atm}\\ Therefore,\\ V = 47.29\ L\)

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How do the products of chemical reactions compare to their reactants?

Answer:

The products often have completely different properties than the reactants.

The correct answer to the question is: The products often have completely different properties than the reactants.

In a chemical reaction, the reactants and products of the reaction have different properties because during the reaction, bonds were broken and new bonds were formed which generate a new substance called the product.

However, chemical equations must be balanced in order to conform to the law of conservation of matter which states that matter can neither be created nor destroyed  during a chemical reaction but can be transferred from one form to the other.    

For example, the reaction of Hydrogen gas (H₂) and oxygen gas (O₂) to produce water (H₂O)

From the equation, we can see that the reactants are gases but the product is a liquid which has a different properties from the gaseous reactants.

Therefore, the correct answer to the question is:  The products often have completely different properties than the reactants.

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Answer:

27.27%

Explanation:

Answer:

Chromium is the first element in the sixth column of the periodic table. It is classified as a transition metal. Chromium atoms have 24 electrons and 24 protons with the most abundant isotope having 28 neutrons.

An atom has 24 protons, 22 electrons, and 28 neutrons. The net ionic charge of the atom is Cr³⁺. The element is chromium.

When an element or ion donates or accepts an electron from another element, they are given an atomic charge. The element receives a negative charge, which requires an electron from the element to complete your octave.

When you contribute one or more electrons to another element, the ions receive a positive charge. With an increase in electron donation or acceptance, the charge number will rise.

The element is chromium, whose atom has 24 protons, 22 electrons, and 28 neutrons. So it will donate three electrons. So the charge that will acquire is Cr³⁺.

Thus, the net ionic charge of the atom is Cr³⁺. The element is chromium.

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Answer:

0.0878 moles CaCl₂

Explanation:

To find the amount of moles of CaCl₂, you need to

(1) convert the volume from mL to L (1,000 mL = 1 L)

(2) calculate the amount of moles (M = moles / L)

It is important to arrange the conversions in a way that allows for the cancellation of units.

(Step 1)
   

  42 mL CaCl₂                    1 L
------------------------  x  ----------------------  =  0.042 L CaCl₂
                                       1,000 mL

(Step 2)

Molarity (M) = moles / volume (L)                <----- Molarity ratio

2.09 M = moles / 0.042 L                            <----- Insert values

0.0878 = moles                                           <----- Multiply both sides by 0.042 L

Answer:

C

Explanation:

thats my guess but im not completely sure

Two factors contribute to the ocean's salt content: seabed openings and runoff from the land.

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Answer:

Explanation:

The relative speed and distance of atoms in a substance depend on the state of matter.

In a solid, atoms are closely packed together and have minimal movement or vibration. Their relative speed is low and their distance from one another is short.

In a liquid, atoms are still close together but have more movement and freedom of movement than in a solid. Their relative speed is slightly higher than in a solid, and their distance from one another is slightly longer.

In a gas, atoms are widely spaced and have a high degree of movement and freedom of movement. Their relative speed is much higher than in a solid or liquid, and their distance from one another is much greater.

In a plasma, atoms are ionized and have a high degree of movement and freedom of movement. Their relative speed is much higher than in a solid, liquid or gas, and their distance from one another is much greater.

The wavelength of the radio waves is longer than that of the microwaves while microwaves have a larger frequency than  radio waves.

We know that the frequency of a wave refers to the number of cycles that is covered by a wave in a second. We also know that the wavelength has to do with the horizontal distance that is covered by a wave.

Both the radio waves and the microwaves are known to the part of the electromagnetic spectrum. These are the waves that are known to have the same velocity and are able to pass through a vaccum.

Though all  the electromagnetic waves do have the same speed, they do not have the same frequency, wavelength and energy. It is known that the wavelength is inversly related to the frequency of the wave. As such, the greater the wavelength, the smaller the frequency.

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Answer:

a. Increase

b. 539 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

The pressure of the gas is inversely proportional to the volume. So, as the pressure decreases, the volume must increase. Assuming constant temperature and ideal behavior, we can calculate the final volume of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁/P₂

V₂ = 760 mmHg × 200.0 L/282 mmHg = 539 L

Answer:

2 should be potential energy and 3 should be A

Explanation:

The clumping of magnesium sulfate means that the wrong kind of drying agent have been used for the sample.

A drying agent is also referred to as a desiccant. It is a substance that is used to remove moisture from a sample. We must recall that the drying agent to be used must not react with the sample.

Since the magnesium sulfate was found to clump together at the bottom of the flask, it means that the wrong kind of drying agent have been used for the sample.

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Answer:

2 HCl

Explanation:

Please kindly check attachment for the step by step solution of the given problem.

Metals conduct heat faster than air. Air or gas heats up by way of convection, whereas metals are closely packed with one another.

substances that are poor conductors of thermal energy are called thermal insulators. Gases such as air and matter such as plastic Metal and wood are thermal insulators.

Metals and stones are examined as good conductors since they can rapidly transfer heat, whereas materials like wood, paper, air, and cloth are the poor maestros of heat. In particular, metals conduct heat better than non-metals, and solids conduct heat better than gases.

So we can conclude that All metals 'can' flatter a gas. If you heat them in a vacuum, all elemental metals can become a gas

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The average atomic mass is 185.4 amu.

To calculate the average atomic mass of an atom from its isotopes, it is necessary to multiply the mass by the percentage of each isotope, then sum them all, and finally, divide it by 100:

So, the average atomic mass of that element is 185.4 amu.

Answer:

B

Explanation:

Answer:

0.436 ⇒ 0.44

9.000 ⇒ 9.0

Concept:

Significant figures are where each of the digits of a number are used to express it to the required degree of accuracy, starting from the first nonzero digit.

Therefore, in the context of this question, two significant figure means that two digits of numbers are kept, from left to right, starting from the first nonzero digit.

Solve:

0.436 has 3 significant digits in total starting from left to right

Thus, the last digit should be rounded up / down

Since the last digit is 6, it is greater than 5, so it should be rounded up.

Therefore, a rounded 0.436 is \(\Large\boxed{0.44}\)

9.000 has 4 significant digits in total starting from left to right

Thus, the last two digits should be rounded up / down

Since the last two digits are 0, it is less than 5, so it should be rounded up (or remained).

Therefore, a rounded 9.000 is \(\Large\boxed{9.0}\)

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Please let me know if you have any questions

Answer:

a because the earth rotates on its axis

Answer:

The number of molecules of water us 1.50× 10²⁵ molecules

Explanation:

From N=nL

where L =avogadro number ( 6.02× 10^²³ entities)

The number of the molecules of water =1

n (amount of substance)=25 moles

hence (N) = 25×1×6.02×10^²³

=1.50×10²⁵ molecules of H2O

Answer:

60 kilometres per hour is the slowest rate of travel

Explanation:

we convert

20 kilometer per minute into kilometer per second

it comes out 1/3 kilometer per sec

Answer:

c

Explanation:

a- 5/1km per second

b-1/3km per second

c. 1/60km per second

the larger the denominator the smaller the fraction