Which are homogeneous mixtures? Check all that apply.
vinegar
trail mix
orange juice with pulp
sugar water
sand
soda pop in a sealed bottle

The density of a cube that has a mass of 25 grams and a volume of 125cm will be 0.2 centimeter cube.

The density of the material is defined as the mass of the substance per unit volume or it is the ratio of mass of the substance to the volume of the substance and the unit will be centimeter cube.

To calculate density the given formula is mass of material to the volume of material.

density = mass / volume

                     mass = 25 grams        

                      volume = 125 cm

Substituting the value in the formula,

                  density = 25 / 125

                                = 0.2 centimeter cube.

Therefore, density of a cube that has a mass of 25 grams and a volume of 125cm will be 0.2 centimeter cube.

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Answer:

Van der Waals forces' is a general term used to define the attraction of intermolecular forces between molecules. The bigger the molecule, the bigger the force.

Explanation:

The formula mass of AgNO₂ is approximately 153.88 amu.

To calculate the formula mass for AgNO₂, add the atomic masses of silver (Ag), nitrogen (N), and oxygen (O). Silver has an atomic mass of 107.87 amu, nitrogen is 14.01 amu, and oxygen is 16.00 amu. Since there is one nitrogen atom and two oxygen atoms in nitrite (NO₂), you compute the mass of NO₂ by adding the atomic mass of nitrogen to twice the atomic mass of oxygen.

Formula mass of AgNO₂ = atomic mass of Ag + atomic mass of N + (2 × atomic mass of O)
= 107.87 amu + 14.01 amu + (2 × 16.00 amu)
= 107.87 amu + 14.01 amu + 32.00 amu
= 153.88 amu

Therefore, the formula mass of AgNO₂ is 153.88 amu.

The complete question is:

What is the formula mass of AgNO₂?

Chemical reactions occur when the starting materials called the reactants rearrange their electrons to create new bonds. It is very difficult to prove the law of conservation of mass in the case of gases.

According to the law of conservation of mass, mass can neither be created nor be destroyed. It can be converted from one form to another. The law of conservation of mass says that the mass of reactants must be equal to the mass of products.

The gas molecules move quickly into the outside space and away from the system. When a gas is produced, it quickly diffuses away from the site of synthesis making it difficult to measure the mass of the products.

So the law of conservation of mass cannot be proved in the case of gases. Randomness is found to very high in gas molecules, so that the measurement of mass is difficult and could not be accurate.

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One mole substance there are [tex]6.02 \times10^2^3[/tex] elementary chemical entity present.  1.5 moles of Helium, there are  [tex]\bold{9.03 \times 10^2^3}[/tex] atoms present.

Mole Concept:

In one mole substance there are [tex]6.02 \times10^2^3[/tex] elementary chemical entity present.

As we know 1 mole = [tex]6.02 \times10^2^3[/tex]

hence,

1.5 moles of Helium = [tex]1.5 \times 6.02 \times10^2^3 = \bold{9.03 \times 10^2^3}[/tex]

Therefore we can conclude that in 1.5 moles of helium, there are  [tex]\bold{9.03 \times 10^2^3}[/tex] atoms present.

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Gas Giants are usually bigger than Terrestrial Planets. Gas Giants also have thicker atmospheres, and have gaseous surfaces. Terrestrial planet tend to be smaller, and have solid surfaces. In our solar system, Mercury, Venus, Earth (home), and Mars are Terrestrial planets.  While Jupiter, Saturn, Uranus (the planet), and Neptune are Gas Giants. Gas Giants are also known as Jovian planets.

x- ray is the answer, believe old dude if you want to.. I just had this question on USA Test Prep

Answer: It is xrays

Explanation: because  i got it right just trust me

The compounds that can be deprotonated by −OH are formic acid and hydrogen sulfide.

Deprotonation may be defined as the process of elimination of a proton from a Bronsted-Lowry acid in an acid-base reaction. Deprotonation does not refer to the ejection or removal of a hydride ion (H-). The process of deprotonation actually removes a +1 charge from a chemical compound.

Formic acid (HCOOH) and hydrogen sulfide (H2S) is typically compound that can be deprotonated through the mechanism of deprotonation.

Such types of compounds are easily ionized in the forms of ions like HCOO- and H+. The deprotonation of such compounds is facilitated by the delocalization of protons to other instable form.

Therefore, the compounds that can be deprotonated by −OH are formic acid and hydrogen sulfide.

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The best statement describing the difference between a physical change and a chemical change is that a physical change involves a change in the state of matter, while a chemical change results in forming a new substance. Correct option is: B.

The difference between a physical change and a chemical change can be best described with the following statement:

Physical changes involve changes in the state of matter (e.g., ice melting into water, water evaporating into steam) without altering the chemical composition of the substance.

On the other hand, chemical changes involve breaking and forming chemical bonds, resulting in the formation of new substances with different chemical properties (e.g., hydrogen and oxygen reacting to form water).

Examples of physical changes include melting, freezing, condensation, and evaporation. Examples of chemical changes include combustion, oxidation, and reactions that produce gas or precipitate.

Complete Question: -

Which statement best describes the difference between a physical change and a chemical change?
A. A chemical change results in a new element being formed, and a physical change results in a new compound being formed.
B. A physical change is a change from one state of matter to another; a chemical change results in a new substance formed.
C. A chemical change does not result in a new substance being formed, whereas a physical change does.
D. A physical change produces a new element, and a chemical change results in a bond breaking between atoms.

Answer:

a. Li with 1 valence electron

Explanation:

For this it is necessary to see the electronegativity of this atoms. The electronegativity is the force or tendency that has an atom to attract electrons, so the atom who has the lower value of electronegativity is the one that will tend to lose rather than gain electrons.

The electronegativity of these atoms is:

Li – 0.98

O – 3.44

F – 3.98

Ne is a noble gas so has no tendency to gain nor lose electrons

Each elements, molecules and compounds have their own formula to identify them. The two compounds in the given lists are sodium chloride and carbon dioxide.

Compounds are chemical substances formed by the combination of two or  more different elements. For example water is a compound formed from two hydrogens and one oxygen atom.

Combination of same atoms forms molecules but not compounds. Sodium, iron, aluminum  ets are single atoms and not compounds. There are different types of compounds such as ionic compounds, covalent compounds, coordination compounds etc.

The compounds are classified based on their bond type, composition etc. sodium chloride (NaCl) os an ionic compound of sodium and chlorine. Similarly carbon dioxide is a covalent compound formed from carbon and oxygen atoms.

Hence, the two compounds in the given lists are sodium chloride and carbon dioxide.Thus, option D is correct.

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yes the answer would be A. Vapor can be easily condensed back to form water. I know because I took this exam and had this question too.

Answer:

Explanation:

The law of conservation of mass holds true, because the mass missing is in gas form. The fact that matter can change, doesn't mean they violate this law of conservation.