what is the mass in grams of 0.250 mol of the common antacid calcium carbonate?

I believe it's (A). It will double.

Explanation:

Charles law states that the volume of an ideal gas is directly proportional to the absolute temperature at constant pressure. (Charles's law).

The pressure, volume, and temperature are the main factors of the ideal gas. At constant pressure when the temperature is doubled, then volume also gets doubled. Thus, option A is correct.

The ideal gas law has been known as the law that relates the pressure, volume, moles, and temperature of the gas particles. The relationship between the volume and the temperature of the gas was given by Charle's law.

According to Charle's law, the volume and the temperature have been known to have direct relation when the factor of pressure is said to be constant. If they exhibit the direct relation then doubling the temperature will double the volume of the gas.

Therefore, option A. the doubling of temperature doubles the volume is correct.

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The true statement is that the metal on the right oxidizes more easily than the one on the left.

Metal oxidation is known to often occur if an ionic chemical reaction is said to take place on a metal's surface at the presence of oxygen.

Note that Electrons often move from the metal to the oxygen molecules in course of this  process and as such The true statement is that the metal on the right oxidizes more easily than the one on the left.

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Answer:

The thermic effect of food.

Explanation:

The process in which metabolic rate increase after meal is called the THERMIC EFFECT OF FOOD.

THERMICAL EFFECT OF FOOD can be defined as the way in which some calories a person or an individual consumed after meal help to break down the food for easy absorbing and to store the food consumed while some are burn off during execise which is why a person or an individual metabolic rate may elevate after meal, during exercise or due to some other factors reason been that human body makes use of energy everyday due to day to day activities.

Example a person who consumed a protein food may experience high THERMIC EFFECT than the person who consumed food that contained fat or carbohydrates reason been it can take a long time for such person body to break down the food, burn and absorb the protein.

Therefore The increase in metabolic rate after a meal is called THERMIC EFFECT OF FOOD.

The order in which the organisms visited the campsite is most likely:

This is because the deer tracks are the most numerous, followed by the rabbit tracks. The bear tracks are less numerous than the rabbit tracks, but they are accompanied by fur. The beaver dam and lodge are the newest features of the campsite, and they are not associated with any other animal tracks.

It is possible that the bear and the beaver visited the campsite at the same time, but the beaver's activities are more recent. This is because the beaver dam and lodge are still in use, while the bear tracks are older and have been partially obscured by the deer tracks.

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In the table on the next page,check off the clues that relate to the organisms that were found in the area. Using the clues,see if you can determine the order in which the organisms visited the campsite.

here is the table with the clues checked off:

Organism Clues

Deer Tracks, droppings

Rabbit Tracks, droppings

Bear Tracks, droppings, fur

Beaver Dam, lodge

Answer: Its not popping up for me *-*?

Answer:

Explanation:

Here, we want to calculate the initial volume of the container

Mathematically, we know that volume and pressure are inversely related. What this means is that as volume increases, pressure is expected to decrease and as pressure increases, volume is expected to decrease

A mathematical link between these two is as follows:

The above is according to Boyles' law.

The values with subscript 1 are the initial values, while the values with the subscript 2 are the final values

Thus:

V1 = ?

P1 = 1.25 atm

V2 = 1L

P2 = 3.75 atm

From the relation:

From Lisa's experiment, it can be concluded that Tablet C was the best antacid among the four types tested, as it required the least amount of HCl to change the color of the indicator.

Indigestion tablets, also known as antacids, work by neutralizing excess stomach acid. Stomach acid is produced by the body to help digest food, but when there is an excess of acid, it can lead to indigestion, heartburn, and other uncomfortable symptoms.

This indicates that Tablet C was able to neutralize the acid effectively and had the highest buffering capacity compared to the other three tablets. Therefore, it can be recommended as the most effective antacid for treating indigestion.

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Image transcribed:

3. Lisa was investigating which of four different types of indigestion tablet neutralised most acid and was therefore the best 'antacid' of the four. She crushed each tablet to a fine powder, and added the powder to 20 mL of water mixed with two drops of universal indicator solution. Then she added 1 mL of dilute hydrochloric acid at a time until the indicator changed colour.

Lisa's results were:

Tablet A-16 mL

a. Put Lisa's results in a suitable table.

Tablet B-15 mL

Tablet C-8 mL

Tablet D-12 mL

Answer: I'm guessing but I think this is the answer and also what I put in mine sorry if wrong

Explanation: I think it's "B.- Slightly Acidic" srry if it's too late-

The amount of heat needed to increase the temperature of a metal's unit mass by one degree is known as its specific heat.

Thus, It is a measurement of the thermal energy storage capacity of the metal molecules at the molecular level and specific heat.

The atomic structure of the metal, its atomic weight, temperature, phase, and impurities are only a few of the variables that have an impact on this number and Specific heat.

Every metal has a different specific heat. It is possible for metals with the same elemental structure to have varying values. The atomic structure, mass, temperature, and presence of impurities in the metal, among other things, all have an impact on the specific heat value in specific heat.

Thus, The amount of heat needed to increase the temperature of a metal's unit mass by one degree is known as its specific heat.

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The total emitted current and temperature relationship can be plotted using the Richardson constant, filament area, and work function for tungsten and LaB6 emitters.

1. The total emitted current in μA as a function of temperature from 0 K to 2600 K can be plotted using the Richardson constant, filament area, and work function of tungsten.

2. The temperature of the filament that yields an emission current of 100 μA can be determined by graphically finding the point on the plot where the current intersects the desired value.

3. On a semilogarithmic decimal scale, both the current from the tungsten source and the LaB6 source can be plotted for temperatures ranging from 1800 K to 2600 K, using their respective Richardson constants, filament areas, and work functions.

4. Graphically, the temperature at which the emission current is approximately 500 μA for the LaB6 emitter can be determined by finding the corresponding point on the plot where the current intersects the desired value.

To plot the total emitted current in μA as a function of temperature from 0 K to 2600 K, we can use the Richardson constant, which is a material-specific constant representing the emission properties of a thermionic emitter. For tungsten, the Richardson constant is on the order of 60 A/K.cm2. By considering the effective emitting part of the filament, which is given as 100×150 microns, we can calculate the total area of the filament. Multiplying the Richardson constant by the filament area and the temperature in Kelvin, we obtain the emitted current in amperes. Converting this to microamperes, we can plot the total emitted current as a function of temperature.

To determine the temperature of the filament that yields an emission current of 100 μA, we can refer to the plot obtained in the previous step. By graphically locating the point where the current intersects the desired value of 100 μA, we can read the corresponding temperature from the x-axis.

For the LaB6 filament, which has a Richardson constant of 40 A/Kcm2 and a work function of 2.5 eV, we can follow a similar process. On a semilogarithmic decimal scale, we can plot the current from both the tungsten source and the LaB6 source for temperatures ranging from 1800 K to 2600 K. By using the respective Richardson constants, filament areas, and work functions, we can calculate and plot the emitted currents for the two sources.

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Answer:

different reactants

Explanation:

because if you think about it what's really thick and it takes a lot longer to burn a piece of paper is super fit material which can just tear real easily just by ripping it with your fingers so if you think about it how fast it burns it's not how big the molecules are because paper has smaller molecules than wood would so the paper burns faster in differently so it's probably the reactant it's made of

Answer:

chemical composition

Explanation:

changes into any state of matter are physical and thus the chemical composition of the matter is unaltered

Answer:

The answer is THEORY! Hope it helps!

Answer:

Hypothesis is your answer

Explanation:

plz mark me brainleast

don't write theory or law

it is wrong written

The half-life of 44ti can be calculated using the given information. The rate of decay is \(4.3*10^8\) disintegrations, and the initial sample size is 1.0 ng.

For finding the half-life, we can use the formula:

half-life = (ln(2)) / (decay constant)

First, we need to find the decay constant using the given rate of decay:

decay constant = rate of decay / initial sample size

decay constant = (4.3*10^8 disintegrations) / (1.0 ng)

Now, we can substitute the decay constant into the half-life formula:

half-life = ln(2) / (decay constant)

half-life = ln(2) / [(\(4.3*10^8\)  disintegrations) / (1.0 ng)]

So, the half-life of 44ti is ln(2) / [(\(4.3*10^8\)  disintegrations) / (1.0 ng)].

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Answer:

brain HSHSHSHSHHSSHSHS

Place the atomic number subscript and mass number superscript to the left of the atomic symbol.

The chemical properties of an atom are determined by its atomic number and are represented by the symbol Z. The total number of nucleons in an atom is the atomic mass number. This value is represented by the symbol A.

Isotopes are members of a family of elements that have the same number of protons and a different number of neutrons. The number of protons in the nucleus determines the atomic number of an element on the periodic table. Isotopes are atoms of the same element that contain the same number of protons but different numbers of neutrons.

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Answer:

The more energy needed, the higher the melting point or boiling point . Since the electrostatic forces of attraction between oppositely charged ions are strong, their melting and boiling points are high.

Explanation:

hope this helps.

The given statement is true. Scientists who use logic to determine whether or not a drug is safe. These researchers are using the classical model of decision making.

A logical and methodical approach to decision-making is the classical model of decision-making. This model proposes that decision-makers gather all relevant data, thoroughly evaluate the alternatives, then select the alternative that maximises their utility or produces the desired result. This model makes the supposition that decision-makers have full knowledge of all available options, are unbiased and logical in their assessment, and make choices free from prejudice or emotional influence. It employs a sequential procedure that involves recognising the issue, specifying the decision criteria, allocating weight to each, producing alternatives, assessing the alternatives, and selecting the best option.

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Answer:

B!

Explanation:

The relative mass of both protons and neutron are 1, while mass of electrons is about \(\frac{1}{1836}\). I hope this makes it simpler to understand.

Answer:

Distillation

Explanation:

In order to turn seawater into freshwater you have to remove the dissolved salt in seawater. That may seem as easy as just boiling some seawater in a pan, capturing the steam and condensing it back into water (distillation).

You can tell an organic liquid is dry after adding a drying agent when it becomes clear and free of any cloudiness or suspended particles.

Drying agents, such as calcium chloride or magnesium sulfate, work by absorbing water from the organic liquid. Initially, the liquid may appear cloudy or have visible particles. As the drying agent absorbs the water, the liquid will become clearer, indicating that it is dry.

The process of drying an organic liquid involves mixing the liquid with a drying agent. During this process, the drying agent attracts and binds with the water molecules present in the liquid. As the water is removed, the organic liquid becomes more transparent and less cloudy. Once the liquid appears completely clear, with no visible particles or cloudiness, it is a strong indication that the drying agent has effectively removed the water, and the organic liquid is now dry.

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Answer:

46 electrons, all I know.

Sorry!

Explanation:

The first radioiodine isotopes to be used to treat thyrotoxicosis were iodine-130 and iodine-131 in 1941, and thyroid cancer was added to their list of uses in 1943.

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Answer:

The earlier bog bodies that were discovered in the 1600s might have not been preserved properly due to a lack of knowledge on how to preserve them or a lack of awareness of their significance. It is also possible that they might have decayed and decomposed over time and not survived till the present day. However, the bog bodies found after the late 1800s were preserved and studied extensively due to the increasing awareness and understanding of their historical and archaeological significance.

Explanation:

Hope this helped!! Have a great day/night!!

the methyl cation has an sp3 hybridization state, a trigonal pyramidal molecular geometry, and a bond angle of approximately 109.5 degrees. These concepts are essential for understanding the properties and behavior of molecules in chemistry.

Hybridization state, molecular geometry, and bond angles are fundamental concepts in chemistry that help us understand the behavior and properties of molecules. In this answer, we will discuss these concepts and apply them to the methyl cation, CH3+.

The hybridization state of an atom refers to the mixing of atomic orbitals to form new hybrid orbitals that are suitable for bonding. The most common types of hybridization are sp, sp2, sp3, and sp3d, which correspond to one, two, three, and four hybrid orbitals, respectively. In the case of the methyl cation, the central carbon atom is bonded to three hydrogen atoms, and the total number of electron groups is four. Therefore, the hybridization state of the carbon atom is sp3.

The molecular geometry of a molecule describes the spatial arrangement of its atoms. The molecular geometry is determined by the number of electron groups around the central atom and the nature of the bonding electrons. The VSEPR theory (Valence Shell Electron Pair Repulsion theory) is commonly used to predict the molecular geometry of a molecule. According to VSEPR theory, the electron groups around the central atom repel each other, and the molecule will adopt a shape that minimizes this repulsion.

In the case of the methyl cation, the central carbon atom has four electron groups, including three single bonds with hydrogen atoms and one lone pair. The lone pair of electrons exerts a greater repulsive force than the bonding pairs, leading to a distorted tetrahedral molecular geometry. The methyl cation has a trigonal pyramidal shape, with the three hydrogen atoms positioned at the corners of a triangle and the lone pair occupying the apex.

The bond angle is the angle formed between two adjacent bonds. The bond angle is also influenced by the repulsive forces between the electron groups around the central atom. In the case of the methyl cation, the bond angle between the three hydrogen atoms is approximately 109.5 degrees, which is slightly less than the ideal tetrahedral angle of 109.58 degrees. The bond angle is slightly reduced because the lone pair of electrons exerts a greater repulsive force than the bonding pairs.

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Answer:

Protons are found in the nucleus of the atom. This is a tiny, dense region at the center of the atom. Protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit (amu), which is about 1.67×10−27 kilograms.

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Answer:

chloroplast

Explanation:

Answer:

Solubility may be stated in various units of concentration such as molarity, molality, mole fraction, mole ratio, mass (solute) per volume (solvent) and other units. The extent of solubility ranges widely, from infinitely soluble (without limit) ( miscible) such as ethanol in water, to poorly soluble, such as silver chloride in water.

Explanation:

The reaction is complete, there are 8.0 moles of CaO and 6.0 moles of C left over.

To determine the moles of reactant left over after the reaction is complete, we need to calculate the limiting reactant.

The limiting reactant is the reactant that is completely consumed and determines the maximum amount of product that can be formed.

Let's start by calculating the moles of CaO and C available:

Moles of CaO = 10.0 mol

Moles of C = 10.0 mol

Next, we need to compare the stoichiometric coefficients of the balanced equation to determine the mole ratio between CaO and C. From the balanced equation:

2 mol CaO reacts with 5 mol C

Now, we can calculate the moles of CaC2 formed based on the limiting reactant. The limiting reactant is the one that has a smaller mole ratio in comparison to the other reactant:

Moles of CaC₂ formed = (10.0 mol CaO) / (2 mol CaO) × (2 mol CaC₂) / (5 mol C) = 2.0 mol CaC₂

Since the balanced equation tells us that 2 moles of CaO react with 5 moles of C to form 2 moles of CaC₂, and the reaction is balanced, the mole ratio is fixed.

Now, we can determine the moles of reactant left over. We subtract the moles of CaC₂ formed from the initial moles of the limiting reactant:

Moles of CaO left over = 10.0 mol - (2.0 mol CaC₂ × (2 mol CaO) / (2 mol CaC2)) = 8.0 mol CaO

Moles of C left over = 10.0 mol - (2.0 mol CaC₂ × (5 mol C) / (2 mol CaC₂)) = 6.0 mol C

Therefore, after the reaction is complete, there are 8.0 moles of CaO and 6.0 moles of C left over.

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