Metals typically lose electrons and become cations lose electrons and become cations lose electrons and become anions lose electrons and become anions gain electrons and become anions gain electrons and become anions gain electrons and become cations

Answer:

ver explicacion

Explanation:

El elemento que tiene el número atómico 56 en la tabla periódica del bario. El bario es un elemento del grupo dos.

Se combina con el cloro para formar cloruro de bario. que tiene la fórmula BaCl2 de acuerdo con la valencia de ambos elementos.

El cloruro de bario es un compuesto iónico.

Answer:

Percent yield = 7.1%

Explanation:

The general reaction of the problem is:

Ca(OH)₂ + CO₂ → H₂O + CaCO₃

To solve this question we need to find theoretical yield using the amount of carbon dioxide added because:

Percent yield = Actual yield (3.22g) / Theoretical yield * 100

Theoretical yield is the maximum amount of product that could be obtained. To find it we need to convert the mass of CO₂ to moles. The moles of CO₂ = Moles of CaCO₃:

Moles CO₂ -Molar mass: 44.01g/mol):

20.0g * (1mol / 44.01g) = 0.454 moles CO₂ = Moles of CaCO₃ produced

Mass CaCO₃ = Theoretical yield -Molar mass: 100.09g/mol-:

0.454 moles * (100.09g / mol) = 45.5g of CaCO₃ = Theoretical yield.

Replacing:

Percent yield = 3.22g / 45.5g * 100

Answer:

When you don't have a complete reaction.

Explanation:

Happens a lot between a solvent and a solute. The solute may not bind well with the solvent I.e. water.

Answer:

b

Explanation:

Answer:

it is B hope I helped

=

Explanation:

The molar mass of Ferric Oxide (Fe2O3) is calculated as follows:

Fe: (2 atoms) x (56 g/mol) = 112 g/mol

O: (3 atoms) x (16 g/mol) = 48 g/mol

Fe2O3 = 112 g/mol + 48 g/mol = 160 g/mol

The molar mass of Lactic acid (C3H6O3) is calculated as follows:

C: (3 atoms) x (12.01 g/mol) = 36.03 g/mol

H: (6 atoms) x (1.01 g/mol) = 6.06 g/mol

O: (3 atoms) x (16 g/mol) = 48 g/mol

C3H6O3 = 36.03 g/mol + 6.06 g/mol + 48 g/mol = 90.09 g/mol

The molar mass of water (H2O) is calculated as follows:

H: (2 atoms) x (1.01 g/mol) = 2.02 g/mol

O: (1 atom) x (16 g/mol) = 16 g/mol

H2O = 2.02 g/mol + 16 g/mol = 18.02 g/mol

The molar mass of ascorbic acid (C6H8O6) is calculated as follows:

C: (6 atoms) x (12.01 g/mol) = 72.06 g/mol

H: (8 atoms) x (1.01 g/mol) = 8.08 g/mol

O: (6 atoms) x (16 g/mol) = 96 g/mol

C6H8O6 = 72.06 g/mol + 8.08 g/mol + 96 g/mol = 176.14 g/mol

The weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.

To calculate the weight of magnesium chloride (\(MgCl_{2}\)) required to prepare a 200 ml solution that is 5.0 M, we need to use the formula: Weight (in grams) = Volume (in liters) × Concentration (in moles/liter) × Molecular Weight (in grams/mole)

First, we convert the volume from milliliters to liters by dividing it by 1000: Volume = 200 ml ÷ 1000 = 0.2 L. Next, we multiply the volume, concentration, and molecular weight: Weight = 0.2 L × 5.0 mol/L × 95.3 g/mol = 47.65 grams

Rounding to the nearest whole number, the weight of magnesium chloride required to prepare the 200 ml solution that is 5.0 M is approximately 48 grams.

This calculation ensures that the desired concentration is achieved by accurately measuring the appropriate amount of magnesium chloride, taking into account its molecular weight and the desired volume of the solution.

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• The balanced equation for the reaction is given by:

• From the above reaction we can see that:

1 mole of ethanol (CH3Ch2OH) produces 1 mol of acetic acid(CH3COOH)

so . x mole of ethanol will produce 0.9mol of acetic acid ....(cross multiply)

xmol ethanol * 1mol acetic = 1mol ethamol* 0.9molacetic

∴ xmol ethanol = 1*0.9 /1

= 0.90 mol

• This means that, 0.90 mol of ethanol, is needed to produce 0.9mol acetic acid,.

Answer:

1s22s22p32d6

Explanation:

is a reasonable electron configuration

Answer:

Hypotonic

Explanation:

The Correct Answer is Hypotonic- (The salt concentration in the solution is lower than it is in the cell, so water enters the cell, causing it to burst.)

If the red blood cells are placed in salt solution the concentration outside the cell be higher and it become hypertonic. By this concentration gradient the salt solution will diffuse into blood and bulges.

Tonicity is the property by which the cell volume changes with respect to the concentration inside and outside the cell. The cell which is more concentrated in ions is called hypertonic and less concentrated compared to outside is called hypotonic.

Molecules diffuses from a solution based on a concentration gradient. Molecules from high concentration region diffuses to low concentration region until the both comes in equilibrium.

When blood cell is placed in a salt solution, the concentration outside becomes higher than inside and the salt molecules will diffuses inside the cell which causes an increases in volume of the blood cell. This situation is called hypertonicity.

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Answer:

It is a halogen element

Explanation:

hope this helps

have a great day/night

Answer:

45 grams

Explanation:

Answer:

A) Chemical Change

Explanation:

Chemical changes occur when bonds are broken and formed between molecules or atoms. This means that one substance with a particular set of properties (such as melting point, color, taste, etc.) is turned into a different substance with different properties.

The compound\(O=CH_3CH_2-C-NH-CH_2CH_3\), can be named as N-ethyl-N-methylpropanamide.

Here's a step-by-step explanation:

1. Identify the functional group: The compound has an amide group, which is -C(=O)NH-.

2. Identify the parent chain: The parent chain consists of three carbons, making it a propane.

3. Identify the substituents: There are two alkyl substituents attached to the nitrogen atom: a methyl group (CH3) and an ethyl group (CH_2CH_3).

4. Assemble the name: Combine the parent chain name (propane) with the amide suffix (amide) and the substituents in alphabetical order (ethyl and methyl) with N- prefix indicating their position on nitrogen atom: N-ethyl-N-methylpropanamide.

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Answer:

atom, that is the smallest unit for the element,while the rest are smaller, they are not units of an element

Explanation:

Answer:

The nuclear force (or nucleon–nucleon interaction or residual strong force) is a force that acts between the protons and neutrons of atoms. Neutrons and protons, both nucleons, are affected by the nuclear force almost identically. Since protons have charge +1 e, they experience an electric force that tends to push them apart, but at short range the attractive nuclear force is strong enough to overcome the electromagnetic force. The nuclear force binds nucleons into atomic nuclei.

Explanation:

Answer:

2 NaCl 2   +   F2  =  2NaF  +  2Cl2

The mass of the sample of water is approximately 10.05 grams.

To calculate the mass of the sample of water, we can use the formula for heat transfer:

Q = mcΔT

Where:

Q = Heat transferred (in joules)

m = Mass of the sample (in grams)

c = Specific heat capacity of water (approximately 4.18 J/g°C)

ΔT = Change in temperature (in °C)

Given:

ΔT = 20°C - 10°C = 10°C

Q = 420 J

c = 4.18 J/g°C

Rearranging the formula, we can solve for mass:

m = Q / (cΔT)

m = 420 J / (4.18 J/g°C * 10°C)

m = 420 J / (41.8 J/g)

m ≈ 10.05 g

Therefore, the mass of the sample of water is approximately 10.05 grams.

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Force and gravity work together with simple objects exert an equal attractive force

Gravity or gravitational force is the force of attraction between any two objects in the universe and the force of attraction depends on the mass of the object and the square of the distance between them and it is by far the weakest known force in nature the size of the gravitational force is proportional to the masses of the objects and weakens as the distance between them increases and both objects exert an equal attractive force on each other and falling object is attracting the earth with the same size force as the earth is attracting it

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Answer:

3,1,2

Explanation:

3 bc u go get liters

1 because ur going from C3H8 to CO2

2 because ur getting CO2 liters

Answer:

20 degrees Celsius

Explanation:

The ideas held by the ancient Greeks have been at least partially supported by scientific experiments include:

This is a phenomenon in which a quantum entity can be referred to as a wave or a particle.

An example is light which has this feature and has been severally proven through series of experiments such as photoelectric effects etc.

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Answer:

B) rate of growth I'd say

Explanation:

it sounds better I don't think anyone would use height of plants if they want to sound professional

After 17.8 seconds, 525.71 grams of N₂O₅ will remain, given a first-order rate law and a half-life of 3.00 seconds.

To find the remaining grams of N₂O₅, we'll use the first-order rate law equation: Nt = N0 * (1/2)^(t / t1/2), where Nt is the amount remaining after time t, N0 is the initial amount, t is the time elapsed, and t1/2 is the half-life.

Given the initial amount of 1.00x10^4 grams and a half-life of 3.00 seconds, the equation becomes: Nt = 1.00x10^4 * (1/2)^(17.8 / 3.00).

Solving for Nt, we get Nt = 1.00x10^4 * (1/2)^5.933, which equals 525.71 grams of N₂O₅ remaining after 17.8 seconds.

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HNO3 and HBr can also be used instead of the provided acids (h2so4 and h3po4) to isolate solid copper in this experiment. Solid copper can be isolated by reacting it with acid. This is achieved in two stages: stage one, where copper reacts with sulfuric acid to produce copper sulfate and hydrogen gas, and stage two, where copper sulfate is reduced to copper using hydrogen gas.  

Therefore, in part b of the experiment, H2SO4 and H3PO4 are used. HNO3 and HBr can also be used instead of H2SO4 and H3PO4 to isolate solid copper. H2S and H2CO3 cannot be used as the acids to isolate solid copper. 'Hence, the correct options are : HNO3 and HBr Therefore, both HBr and HNO3 could be used in place of the acids (H2SO4 and H3PO4) to isolate solid copper in part b of this experiment.

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Answer:

solubility

Explanation:

Solubility is the ability of a solid, liquid, or gaseous chemical substance (referred to as the solute) to dissolve in solvent (usually a liquid) and form a solution. The solubility of a substance fundamentally depends on the solvent used, as well as temperature and pressure.

hope it helps :)

please mark it the brainliest!

Answer:

Solubility

Explanation:

just in case

The incorrect statement will be; When possible use radioactive substances with half-lives is less than 120 days, when it comes to minimizing the hazardous waste. Option A is correct.

The recommended approach for minimizing hazardous waste is to use radioactive substances with shorter half-lives, which will result in less long-term radioactive waste. The half-life of a substance is the time it takes for half of the material to decay radioactively, and substances with shorter half-lives decay more rapidly, producing less waste over time.

Out of the given options, the best approach is to use radioactive substances with half-lives less than 60 days, as this will result in the least amount of long-term radioactive waste. Option B is incorrect. When it comes to minimizing hazardous waste, it is preferable to use radioactive substances with shorter half-lives.

This is because shorter half-lives result in less radioactive waste being generated over time. Therefore, the correct statement is "When possible use radioactive substances with half-lives is less than 40 days."

Hence, A. is the correct option.

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--The given question is incomplete, the complete question is

"Which of the following statements below is incorrect when it comes to minimizing hazardous waste? A)When possible use radioactive substances with half-lives less than 120 days B) When possible use radioactive substances with half-lives less than 40 days C) When possible use radioactive substances with half-lives less than 60 days D) When possible use radioactive substances with half-lives less than 30 days."--

Answer:

only change the amount of lemonade mix you add.

only change the amount of water you add.

Explanation:

just did this question

The examples of controlled experiments are as follows:

Thus, the correct options for this question are B and C.

A Controlled experiment may be defined as a type of experiment in which all the variable factors in an experimental group and a juxtaposition control group are held identical except for one variable factor in the experimental group that is significantly altered.

According to this question, the options in which one variable factor is altered should keep in the category of a controlled experiment. It is very easily identified that the alteration or addition of lamonade in one experiment or the only addition of water in another experiment.

Therefore, the correct options for this question are B and C.

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The reaction between an antacid tablet and tap water typically produces carbon dioxide gas. Antacid tablets contain compounds such as calcium carbonate or magnesium hydroxide, which react with the acid in the stomach to neutralize it.

When these tablets are mixed with water, a chemical reaction occurs, releasing carbon dioxide gas as a byproduct. This gas is what causes the fizzing or bubbling effect that is commonly observed when an antacid tablet is dissolved in water. The production of hydrogen or oxygen gas is not typically associated with the reaction between antacid tablets and tap water.

In summary, the reaction between an antacid tablet and tap water primarily produces carbon dioxide gas.

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