Which is the correct measure of density?

1. Mass/Volume

2. Mass x Volume

3. Weight/Volume

4. Volume/Weight

The electricity generated that powers the watch by zinc in the battery combines with oxygen in the air, zinc oxide forms reaction is a product.

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Answer:

The particle theory of matter is a model that describes the arrangement and movement of particles in a substance. The model is used to explain the physical properties of solids, liquids and gases.

Explanation:

Explanation:

Yes, Na2 gas possesses a metallic character.

In the stable state, metal sodium functions as an array of Na+ ions which can be surrounded by way of a sea of 3s electrons. However, it would be wrong to consider metal sodium as an ion when you consider that the ocean of electrons is shared by using all of the sodium cations, quenching the nice fee.

Sodium most effective has one valence electron. So, in metallic bonding, it is able to only donate one electron to be delocalized at some point of the structure. In steel bonding, the real bonding is the electrostatic force between the effective cations and the delocalized electrons.

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Answer:

Pacific Ocean

Explanation:

Answer:

im not 100% sure but i think it is :A

Explanation:

Answer:

c

Explanation:

Ionization energy refers to the amount of energy required to remove an electron from an atom or ion. The trend of ionization energy on the periodic table is that it generally increases from left to right across a period and decreases from top to bottom within a group. This is due to the increasing number of protons in the nucleus and the increasing distance between the outermost electrons and the nucleus.

The second ionization energy is always higher than the first ionization energy, as it requires more energy to remove a second electron from a positively charged ion.

Similarly, the third ionization energy is even higher than the second ionization energy, as it becomes more difficult to remove electrons from a positively charged ion with each subsequent removal.

This trend continues for each subsequent ionization energy.

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The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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Option (b) is correct. The molarity of the resulting solution is 0.652 M. This is calculated using the expression of ideal gas equation and molarity.

12.7 l of argon at 33°c and 735 torr are dissolved in enough water to give a final volume of 0.750l. so,

P = 735.0 torr

 = (735.0/760) atm.

 = 0.9671 atm.

V = 12.7 L

T = 33.0 o C

 = (33.0+273) K

 = 306 K

We can find the  number of moles using ideal gas equation. The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas. It is a good approximation of the behavior of many gases under many conditions. The ideal gas equation is,

         P * V = n*R*T

        0.9671 atm. * 12.7 L = n * 0.08206 atm. L/mole . K * 306 K

        n = 0.4891 mole

Now, we will calculate Molarity. Molarity or molar concentration is the number of moles of solute per liter of solution, which can be calculated using the following equation,

Molarity = number of mole / final volume

 = 0.4891 mole / 0.750 L

 = 0.652 M

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Explanation:

If the pH is between 0 and 7, then we have an acid.

If the pH is between 7 and 14, then we have an alkaline base.

If pH = 7, then it's neutral.

Answer:

0-7

Explanation:

Hope this helps!

An ionic compound typically contains a multitude of ions grouped together in a highly ordered three-dimensional is ionic crystal.

Ionic crystals are crystalline forms of ionic compounds in chemistry. They are solids made of ions that are electrostatically attracted to one another and organized into a regular lattice. There are four ionic crystal characteristics.

high fusion and vapourization enthalpies.

substantial melting and boiling points.

Inherently fragile and hard.

is only electrically conductive when dissolved in water.

soluble in polar solvents such as water.

At least two of the atoms in the base of an ionic crystal are ionized. We must always have ions with an opposing charge because charge neutrality requires that the base's overall charge be zero. Cations and anions alternate within ionic crystals, which are kept together by electrostatic forces.

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Answer:

answer is 0.5

Explanation:

H= 2X l =2

0=16 xl = 16

So 16+2=18

lmol of H2O → 18g

xmol of H2O →9g

:. 9÷ 18=0.5

x= 0.5

Answer:

When we shake the branch of a tree the tree possesses a state of motion whereas the fruits and leaves tend to remain in state of rest. Due to this inertia of rest the fruits and leaves get detached from the branch and because of gravity it falls down.

Explanation:

so it's because of the gravity .

Answer:

CLIMATE :::

Climate change affects global temperature and precipitation patterns. These effects, in turn, influence the intensity and, in some cases, the frequency of extreme environmental events, such as forest fires, hurricanes, heat waves, floods, droughts, and storms.

EXTREME WEATHER :::

Too much rain (heavy downpours), causes floods and landslides. Too much heat and no rain (heatwave) drought and wildfires. Strong winds, such as hurricanes and tornadoes = damage to man made structures and animal habitats.

Explanation:

brainliest plz

Nuclear fusion is the process which forms all elements up to and including iron, except light elements such as hydrogen and helium.

Nuclear Fusion reactions power the solar and different stars. In a fusion response, two mild nuclei merge to shape a single heavier nucleus.

The method releases power due to the fact the total mass of the ensuing single nucleus is less than the mass of the 2 unique nuclei. The leftover mass turns into electricity.

For years, the science has proved difficult to master. However over the last year, nuclear fusion has inched in the direction of fact. Scientists are mere years from getting extra energy out of fusion reactions than the power required to create them, they stated.

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The neutrons that are the products of the chain reaction collide with more of the U-235 to continue the chain reaction

In a chain reaction, the byproducts of one reaction step serve as the reactants for the future reaction stages, creating a continuous and quickly accelerating process. It frequently comes up in discussions about nuclear reactions and chemical processes involving extremely reactive species.

A small number of reactive species or particles are produced in the initiation reaction, which is the first reaction of a chain reaction. The propagation steps are the successive reactions that these reactive species go through where they interact with other molecules or particles to create additional reactive species.

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An atom X that has 12 protons and 12 electrons, loses 2 electrons to form an ions,  the charge of ion will be X⁺² the number of protons 12 and electrons in the ions is 10.

An atom X has 12 protons and 12 electrons that means X is a neutral atom and the atomic no. is 12 because total no. of protons is equal to atomic number. When it looses the 2 electrons then atom becomes positively charged ion . the charge on the ion is +2.

now, the no. of protons will be = 12

number of electrons will be = 12 - 2 = 10

Thus, An atom X that has 12 protons and 12 electrons, loses 2 electrons to form an ions,  the charge of ion will be X⁺² the number of protons 12 and electrons in the ions is 10.

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Answer:

Answer and Explanation: To determine the number of moles of silver (Ag), we simply need to divide the number of atoms of Ag by the Avogadro's number, N , which is equal to 6.02 10 atoms of Ag per mole of Ag. Therefore, c) 6.3 moles of Ag are present in a sample of 3.8 10 atoms Ag.

The data collected is not precise.

In science, we define precision as the degree to which scientific measurements yield results having close range of values.

A precise data set has values that are very close to each other.

In this case the values; 4mi/hr, 3mi/hr, 6.9mi/hr, and 7mi/hr are not close to each other.

Therefore, the data set is not precise.

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Answer:

A. Receptors in muscles provide the brain with information about body position and movement.

Explanation:

Answer:

Products

Explanation:

The end results of a chemical reaction are called products

-> In chemistry, a product is a substance that is formed as the result of a chemical reaction.

-> Not many other ways to word this as it is a definition

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

Answer:

Products

General Formulas and Concepts:

Reactions

Reactants and Products in RxNs

Explanation:

The substances used in a chemical reaction is called the reactants, usually located on the left side of the arrow (if pointing right).

The substances produced in a chemical reaction is called the products, usually located on the right side of the arrow (if pointing right).

RxN examples:

Reactant + Reactant → Product + Product

Reactant + Reactant → Product

Reactant → Product + Product

Topic: Honors Chemistry

Using a blank containing Fe(NO3)3 Iron(III) nitrate ensures that the absorbance due to Fe(NO3)3 is accounted for and is not incorrectly attributed to the analyte's concentration.

Fe(NO3)3 is a brownish-yellow colored compound, and it is essential to use this in the blank to correct for any absorbance caused by Fe(NO3)3 present in the sample. If a solution containing only HNO3 is used in the blank, it may not account for any absorbance caused by Fe(NO3)3 in the sample.

As a result, the spectrophotometer may detect the absorbance due to the presence of Fe(NO3)3 in the sample and report a higher concentration of the analyte than it actually contains.

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Answer:

b - 385 j

Explanation:

To answer this question, we need to convert the 2.75 mol of mg+2 to mg. The molar mass of mg+2 is 24.31 g/mol. Therefore, we can calculate the mass of 2.75 mol of mg+2 as follows:

mass = 2.75 mol x 24.31 g/mol = 66.7275 g

Since mg+2 has a charge of 2+, we need to divide the mass by 2 to get the number of equivalents of mg+2:

equivalents = 66.7275 g / 2 = 33.36375 equivalents

Finally, we need to convert the equivalents to mg+2. One equivalent of mg+2 is equal to 24.31 mg. Therefore, we can calculate the number of mg+2 equivalents as follows:

mg+2 equivalents = 33.36375 equivalents x 24.31 mg/equivalent = 811.51 mg

In conclusion, there are 811.51 mg+2 equivalents in a solution containing 2.75 mol of mg+2.

To determine the number of equivalents of Mg²⁺ in a solution, we need to know the valence of the ion. There are 5.50 equivalents of Mg²⁺ present in the solution containing 2.75 moles of Mg²⁺.

The definition of an equivalent is the amount of a substance that will react with or replace one mole of hydrogen ions (H⁺). Since Mg²⁺ has a valence of 2, one equivalent of Mg²⁺ will react with or replace two moles of H⁺.Given that you have 2.75 moles of Mg²⁺, we can calculate the number of equivalents:

equivalents of Mg²⁺ = (2.75 mol Mg²⁺) ₓ (2 equivalents/mol Mg²⁺)

equivalents of Mg²⁺= 5.50 equivalents

Therefore, there are 5.50 equivalents of Mg²⁺ present in the solution containing 2.75 moles of Mg²⁺.

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Answer:magine 2 cubes. ... One cube is made out of gold and has a mass of 19.3 grams. ... Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3 ... If you weigh 1.00 mL of liquid water it will have a mass of about 1 g so its ... They are both less dense than water so they will also float on top of water .

Explanation:

Since the volume decreased, it means that the pressure is going to rise. Thus, the equilibrium of the reaction will shift in the direction that has the least amount of moles.

The statement, that describes the equilibrium "will change in the direction with the minimum moles."

A condition of equilibrium has become one of balance. Chemical equilibrium is the state in which both the reactants and products are present in concentrations that have no further tendency to change with time, resulting in no observable change in the system's properties.

When volume decreases, the equilibrium shifts to favor the direction that produces fewer moles of gas. When the volume is raised, the equilibrium shifts in favor of the direction that produces the most moles of gas. Because the container's volume will be lowered from 5.0 L to 3.0 L, the pressure will rise. As a result, the equilibrium of the reaction will shift in the direction with the fewest moles. When the volume is reduced, the pressure rises. This demonstrates that a gas's pressure is inversely proportional to its volume.

Hence the correct answer is equilibrium will change in the direction with the minimum moles.

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Answer:

A. Actual Yield

Since all of the others are calculated not measured outright.

Yes, the statement is True i.e. Sodium chloride is a buffer creating an injectable solution that is isotonic.

A buffer solution, also referred to as a pH buffer or hydrogen ion buffer, is an aqueous mixture of a weak acid and its conjugate base, or vice versa. The pH scarcely changes at all when a small amount of a strong acid or basic is added to it. Buffer solutions are used in a wide range of chemical processes to keep pH values almost constant. Buffering is used by many living systems to regulate pH in the natural world. For instance, the bicarbonate buffering system regulates the pH of blood, and bicarbonate also acts as a buffer in the ocean. Because of a chemical equilibrium between the weak acid HA and its conjugate base A, buffer solutions are resistant to pH change: HA ⇌ H+ + A− According to Le Chatelier's principle, an equilibrium between a weak acid and its conjugate base shifts to the left when hydrogen ions (H+) are supplied. Because of this, despite the supply of strong acid, the concentration of hydrogen ions increases less than anticipated.

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