if an atom of carbon gains or loses a proton, what is it called?

Answer:

Examples of calcium channel blockers include:

Amlodipine (Norvasc)

Diltiazem (Cardizem, Tiazac, others)

Felodipine.

Isradipine.

Nicardipine.

Nifedipine (Procardia)

Nisoldipine (Sular)

Verapamil (Calan SR, Verelan)

Answer: For disadvantages, 1,2, and 3.

Answer:

cfttyuuhhvderyuhhhh

The number of significant figures in a measurement depends on the level of precision of the experimental procedure. Significant figures refer to the number of digits that are reliable in a measurement. For instance, if a measurement is precise to one decimal place, it means that the measurement is reliable up to the first decimal place.

In the case of the volume of 10 mL being intentionally left ambiguous, it implies that the precision of the experimental procedure is not clear. It could be that the experimental procedure was not precise enough to measure beyond the integer value of 10 mL, or it could be that the experimenters intentionally rounded the value to 10 mL for convenience.

To determine the number of significant figures in a measurement, it is essential to consider the precision of the measuring instrument, the level of uncertainty associated with the measurement, and the experimental procedure used. If the measuring instrument is precise to one decimal place, then the measurement can be reliable up to that decimal place.

In conclusion, the number of significant figures in a measurement is determined by the level of precision of the experimental procedure. It is crucial to take care in measuring the quantity to get accurate results and avoid ambiguity.

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Answer:

b. blinking of eyes

Explanation:

Answer:

The answer is B

Explanation:

Blinking is involuntary but also can be done voluntarily.

In main-sequence stars, nuclear fusion reactions take place in the core, where hydrogen atoms are fused to form helium. This process is known as the proton-proton chain reaction.

The energy released by this reaction is sufficient to balance the gravitational force that is trying to collapse the star. This process continues until the hydrogen in the core is exhausted, and the star enters the next phase of its life.

Red giants and red supergiants differ in their process of making energy. In red giants, nuclear fusion reactions take place in the outer layers of the star, where helium atoms are fused to form carbon. This process is known as the triple-alpha process. The energy released by this reaction is not sufficient to balance the gravitational force that is trying to collapse the star. The star expands and cools.

In red supergiants, nuclear fusion reactions take place in the core, where heavier elements are fused to form even heavier elements. This process releases much more energy than the proton-proton chain reaction or the triple-alpha process. This energy is not sufficient to balance the gravitational force that is trying

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Answer:

Electrons.

Explanation:

Answer:

oh yes chemical oxidation removes

Explanation:

but i m not sure hope it is right i haven't looked book this time

Answer:

the third one

Explanation:

When you breathe in, you inhale oxygen and exhale carbon dioxide

Answer:

dry

polar

highlands

temperate marine

temperate continental

Explanation:

The rule of conservation of mass must be used in order to provide a solution to this query. According to this law, the mass before a reaction and the mass after the reaction are equal.

Calculate the amount of ammonia (NH2) that can be produced from the 5.0 g of nitrogen gas (N2) that is present in this situation. The solution may be found by solving the balanced equation shown below: N₂ + 3 H₂ → 2 NH₃.

The amount of nitrogen gas (N2) must match the amount of ammonia (NH3), according to the rule of conservation of mass. Therefore, if we have 5.0 g of nitrogen gas (N₂), we can calculate that we can make 10.0 g of ammonia (NH₃). This is due to the fact that the balanced equation states that 5.0 g of nitrogen gas (N2) is equivalent to 10.0 g of ammonia (NH3).

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The Wilke-Chang method is used to predict the diffusion coefficient of Phosphoric acid in water. The Wilke-Chang method is a widely used empirical equation to estimate the diffusion coefficient of a solute in a solvent.

Fick's Law of diffusion states that the mass transfer rate of a solute across a porous membrane is proportional to the concentration gradient and the diffusion coefficient.

a. It takes into account the molecular weight, viscosity, and density of the solute and solvent. By plugging in the relevant values for Phosphoric acid and water, we can calculate the diffusion coefficient.

To calculate the diffusion coefficient of Phosphoric acid in water using the Wilke-Chang method, we need to know the molecular weight of Phosphoric acid (H3PO4) and water. The molecular weight of H3PO4 is 98 g/mol, and the molecular weight of water is 18 g/mol.

The Wilke-Chang equation is given by:

D = (1 / Φ) * [(1/M1 + 1/M2) / (√(1/μ1) + √(1/μ2))] * (T / P)

where D is the diffusion coefficient, Φ is the void fraction of the ceramic filter, M1 and M2 are the molecular weights of the solute and solvent, μ1 and μ2 are the viscosities of the solute and solvent, and T is the temperature in Kelvin.

b. We have the mass transfer rate and the thickness of the ceramic filter, so by rearranging Fick's Law equation, we can calculate the concentration at the other side of the filter.

The equation is given by:

J = -D * ∆C/∆x

where J is the mass transfer rate, D is the diffusion coefficient, ∆C is the change in concentration, and ∆x is the thickness of the ceramic filter.

We have the mass transfer rate (1.4 x 10^(-9) kg mol H3PO4/s.m²) and the thickness of the ceramic filter (4.2 mm = 0.0042 m), so by rearranging the equation, we can calculate the change in concentration (∆C) and then use it to find the concentration at the other side of the ceramic filter.

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[Mg(HSO4)2] is the formula for magnesium hydrogen sulfate.

Hexamethyldisilazane (HMDS) has been used to mildly produce trimethylsilyl (TMS) ethers from a variety of primary, secondary, and tertiary aliphatic alcohols, aromatic alcohols, and oximes in the presence of magnesium hydrogensulfate [Mg(HSO4)2], a heterogeneous solid acid catalyst.

Additionally, under solvent-free conditions, 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydroxanthene derivatives were produced quickly in the presence of Mg(HSO4)2 in high to exceptional yields.

Some linear and cyclic aromatic acetals have been created using a reusable catalyst made of magnesium hydrogen sulphate in an environment devoid of solvents.

The features of this ecologically friendly method—such as its high product yield, straightforward work-up process, and avoidance of organic solvents—will help it immensely in its role as a green process.

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The number of atoms of the radioactive isotope in the freshly prepared sample is approximately 1.85 x \(10^1^8\) atoms.

To determine the number of atoms in the sample, we can use the concept of radioactive decay and the relationship between activity, time, and the decay constant. The activity of a radioactive substance decreases over time due to the decay of its atoms.

By comparing the initial activity (10000 Bq) with the activity after 4 hours (7000 Bq), we can calculate the fraction of remaining atoms. Assuming exponential decay, we can use the decay constant to find the number of atoms present in the sample.

Using the equation for radioactive decay, we find that the number of atoms in the freshly prepared sample is approximately 1.85 x \(10^1^8\) atoms.

Radioactive decay is a fundamental concept in nuclear physics and plays a crucial role in various applications, including radiometric dating and medical imaging. Understanding the relationship between activity, time, and the number of atoms allows scientists to study the behavior and properties of radioactive materials.

The decay constant, specific to each radioactive isotope, determines the rate of decay and provides valuable information about the stability and half-life of the isotope. Accurate measurement and calculation of radioactive decay are essential in both scientific research and practical applications.

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The part that is the source of the activation energy required is the flame and the reaction is endothermic.

In this scenario, the source of the activation energy required is the flame on the gas stove. The flame provides the heat energy necessary to increase the kinetic energy of the water molecules and cause them to move faster, resulting in an increase in the temperature of the water.

The process of heating the water is an endothermic reaction because energy is being absorbed from the surroundings (in this case, from the flame) in order to increase the temperature of the water.

As the water absorbs heat energy from the flame, the potential energy of the water molecules increases, causing them to move faster and collide more frequently, which leads to an increase in the temperature of the water.

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We have that for the Question "Which ionic compound would be expected to have the highest lattice energy?" it can be said that

Generally, lattice enthalpy depends on the product of charges on the ion as well as the distance between them.

The more vivid factor is the part of charge,

Therefore,

\(In_2O_3\) has a product of 6 which is maximum  

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Answer:

gari / sugar

Explanation:

Answer:

Physical reaction

Explanation:

Since there are no other chemicals in the equation, but the state of the chemical is going from a liquid to a gas, you can conclude that this is a physical reaction.

Answer:

Solute=the substance which a solvent dissolve to produce homogeneous mixture

Solvent= the substance in which a solute dissolve to produce homogeneous mixture

Explanation:

solvent: The liquid in which a solute is dissolved to form a solution.

solute: The component in a solution, dissolved in the solvent.

Answer:

Iron and chlorine form an ionic compound whose formula is FeCl3. The name of this compound is iron (III) chloride or iron trichloride.

Explanation:

Iron (III) chloride or Iron trichloride is also known as ferric chloride, it is a common compound of iron in the +3 oxidation state. The anhydrous compound is a crystalline solid with a melting point of 307.6 °C.

Answer:

The answer is C, both krypton and neon.

Explanation:

I got the answer wrong and my teacher told me that c is the right answer choice

Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the correct option is option C.

Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.

Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.

Rb react as cation Rb ⁺ with electron distribution as [Kr] after removal of 1 electron from s orbital. F react as anion F⁻ with electron distribution [He] 2s² 2p⁶ which is equal to electronic configuration of neon.

Therefore, the correct option is option C.

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The chemical reactions in which oxidation and reduction reactions occur simultaneously are defined as the redox reactions. An oxidation-reduction reaction is also called a redox reaction.

A reaction which involves loss of electrons is known as oxidation whereas a reaction which involves gain of electrons is called the reduction. Oxidation can occur only if reduction also takes place side by side and vice versa.

An ionic equation is a chemical equation in which the formula of dissolved aqueous solutions are represented as individual ions. So an oxidation‐reduction reaction takes place in order to balance the ionic equation.

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In renal tubules, renal Na-K-ATPase performs a key function withinside the energetic translocation of Na and K throughout this membrane.

In addition to withinside the "secondary energetic" shipping of some of different solutes. The Na-K pump actively transports sodium from the lumen of the renal tubule transcellularly into the interstitial fluid. The Na+K+-ATPase pump enables to keep osmotic equilibrium and membrane capability in cells. The sodium and potassium flow towards the awareness gradients. The Na+ K+-ATPase pump keeps the gradient of a better awareness of sodium extracellularly and a better degree of potassium intracellularly.

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Answer:

Crystalline solids

Explanation:

hope this helps

Answer:

It can’t displace any more than its volume, assuming there is no external force pushing downwards.

The law which this chemist is most likely investigating heating a fixed amount of gas in a sealed glass container is: Gay Lussac’s law.

Gay Lussac's law states that when the volume of an ideal amount of gas is held (kept) constant, the pressure of the gas is directly proportional to the absolute (Kelvin) temperature of the gas.

Mathematically, Gay Lussac's law is calculated by using the formula;

\(PT = K\\\\\frac{P_1}{T_1} = \frac{P_2}{T_2}\)

Where:

In conclusion, the chemist is most likely investigating how changes in temperature affect the pressure of the gas by heating a fixed amount in a sealed glass container in accordance with Gay Lussac's law.

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Gases Unit Test Honors Chemistry A

1) B. The volume increases to twice its original value.

2) A. volume and temperature directly proportional

pressure and volume inversely proportional

pressure and temperature directly proportional

3) D. Gay-Lussac’s law, by seeing how changes in temperature affect the pressure of the gas

4) B. V1P1/T1=V2P2/T2

5) A. It is a straight line with a positive slope showing that an increase in temperature results in an increase in volume.

6) D. keeping the pressure constant and increasing the temperature

7) A. When temperature is held constant and volume increases, the pressure increases.

8) D. pressure, volume, temperature, number of moles

9) A. volume

10) A. 7.10 L/mol

11) A. 0.105 mol

12) B. 27 g/mol

13) B. the temperature increasing by a factor of 2

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Answer:

(-1,0)

Explanation:

Answer:

CaCO3 + 2HCl ---> CaCl2 + H2O + CO2

Explanation:

The reaction between solid calcium carbonate and a mineral acid such as aqueous HCl is a neutralization reaction and occurs with the evolution of CO2 gas.

The balanced equation is given below

CaCO3 + 2HCl ---> CaCl2 + H20 + CO2

The product CaCl2 is water soluble which accounts for why the stain is removed, while CO2 gas escapes away from the reaction surface.

Answer:

CaCO3(s) + 2HCl(aq) -------> CaCl2(aq) + 2CO2(g) + H2O(l)

Explanation:

CaCO3(s) + 2HCl(aq) -------> CaCl2(aq) + 2CO2(g) + H2O(l)

When an acid reacts with a metal carbonate a salt, carbon dioxide and water are formed. Hard water usually contain Ca^2+ in the form of Ca(HCO3)2. Minor heating causes CaCO3(calcium carbonate) to deposit on surfaces through which the hard water passes.

Calcium carbonate reacts with acids to produce a calcium salt, water and carbon dioxide: Calcium carbonate + Hydrochloric acid → Calcium chloride + Water + Carbon dioxide. The carbonate radical breaks up into carbon dioxide and oxygen; the oxygen binds with the acid's hydrogen ions to make water; and a solution of calcium chloride remains.

Answer:

B. 11.18 mols of Cu

Explanation:

Given parameters:

Number of particles in Cu  = 6.73 x 10²⁴ particles

Unknown:

Number of moles  = ?

Solution:

A mole of a substance is known to contain the Avogadro's number of particles. To solve this problem;

          6.02 x 10²³ particles is contained in 1 mole of a substance

         6.73 x 10²⁴ particles  will be contained in \(\frac{6.73 x 10^{24} }{6.02 x 10^{23} }\)   = 11.18moles of Cu

Explanation:

Purpose and Theory: A tablet of vitamin C contains the active ingredient called ascorbic acid (HC,H,0.).

Ascorbic acid is an organic acid which is a white power and is soluble in water.

In the following microtitration lab you will be grinding up a vitamin C tablet

, and using a 0.10 g sample of the

vitamin C powder, which will be dissolved in 20-40 mL of water. This solution will be used to determine the

quantity of ascorbic acid in a commercial vitamin C tablet.

Groups

Lab 2

# of Drops 1 or Drops 2 of Drops 3

96

91

94

Hadia

Data & Analysis:

Complete the missing information in the following data table [24]

1

2

3

Trial

Volume of NaOH (drops)

0 05mL drop

(NaOH (O 0050mol/L)

Volume of NaOH (ML)

Average Volume of NaOH (ml)

T I

O 0050

00050

00050

The balanced chemical reaction between ascorbic acid and sodium hydroxide is:

HC,H,O + NaOH NaC,H,Oye H,O,

1. Stoichiometrically calculate the mass (in grams) of ascorbic acid in the powdered sample. 

The explanation of Figures A and B to do or do not show work being done is given below:

He is using energy to lift the books in picture A, which takes both force and motion to do so. In figure B, the books move along with him, and as such only effort is used to carry them. Hence, he is doing work only in Figure A.

The examples are:

The sum of the displacement and the component of the applied force of the object in the displacement direction is the work done by a force. Work is accomplished when we push a block with some force; the body moves more quickly.

Work completed is noted as an object must be subjected to a force and move in the direction of the force in order for work to be done on it.

Therefore, It should be converted to energy in order to move an object. Energy can be transferred by the use of force. This amount of energy that is delivered when a force is used to move an object is known as work that is done.

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