Study the map. Then use the drawing tool to create a model of how the two air masses look when they interact at front 1.

Answer:

substances

Explanation:

A chemical reaction happens when substances break apart or combine to form one or more new substances.

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Answer:

With the policies of containment, the United States hoped to effectively stop the spread of communism and their newest threat. After the war, the United States and the Soviet Union had very different ideas on how to rebuild.

Answer:

proton donar

proton acceptor

Explanation:

From the given information of the question, Arrhenius acid and base concept is explained, from which a better term to define an acid and base is defined, known as The Bronsted-Lowry acid base theory.

According to The Bronsted-Lowry acid base theory -

An acid is the species which can readily donate a proton, where as, a base is the species, which can readily accept a proton.

Hence, the correct answer is as follow -

proton donar

proton acceptor

Answer:

proton donar

proton acceptor

Explanation:

Answer:

C1 * V1 = C2 * V2

Explanation:

Where ‘C’ and ‘V’ refer to concentration and volume, ‘1’ and ‘2’ to solution 1 and 2 respectively. So, if ‘1’ refers to the HCl solution, we want to solve this equation for C1.

V1 = (C2*V2)/C1 = (0.4 * 50)/40 = 0.5 M

Answer:

A

Explanation:

it binds quarks together

In quantum chromodynamics the theory of the strong force, the interactions of the quarks are described in terms of eight types of massless gluon. A gluon is a particle that binds quarks to one another. The correct option is A.

The gluon, so called the messenger particles is defined as the strong nuclear force which binds the subatomic particles known as quarks within the protons and neutrons of stable matter as well as within heavier short-lived particles at high energies.

It has been found that the quarks interact by emitting and absorbing gluons just as electrically charged particles interact through the emission and absorption of photons. Like quarks the gluons carry a strong charge known as colour. This means that gluons can interact between themselves through the strong force.

The gluons have no electric charge.

Thus the correct option is A.

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Answer:

its C

Explanation:

Answer:

7.53*10²³ molecules of oxygen will you need.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

You can then apply the following rule of three: if by definition of Avogadro's Number 1 mole of oxygen gas contains 6.023*10²³ molecules, 1.25 moles contains how many molecules?

[tex]amount of molecules=\frac{1.25 moles*6.023*10^{23}molecules }{1 mole}[/tex]

amount of molecules= 7.53*10²³

7.53*10²³ molecules of oxygen will you need.

Answer: Mothballs have weak intermolecular forces.

No all substances do not behave like mothballs at normal conditions. Example: benzene , chloroform

Explanation:

Sublimation is a process of converting a substance from solid state to gaseous state without the formation of liquid at constant temperature.

A substance which undergoes sublimation is called as sublimating substance.

As mothballs is made of napthalene which has weak inter molecular forces of attraction between its molecules, it directly sublimes into gaseous state without leaving any residue and is called as a sublimating substance.

Not all substances behave like mothballs at normal conditions. Example: benzene , chloroform

Due to weak intermolecular attraction force mothballs will disappear and not every compound show this type of behavior like benzene and chloroform.

Mothballs are also known as Naphthalene balls, they are the aromatic organic compounds and they are the members of the sublimating substance family as they directly convert into gaseous state from the solid state.

In the mothballs or naphthalene balls, there is a weak attraction of force London dispersion force is present between their constitute particles, and in normal condition they show sublimation and gets disappear. Not all aromatic compounds behave like these balls as not in all compounds these types of force present, for example in benzene and chloroform strong covalent bond is present.

Hence, not all compounds behave like mothballs and they show that property due to weak attraction force.

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Answer:

Swimming

Explanation:

Pollution is almost irreversible and takes forever to fix. deforestation leads to bad air quality and the erosion of the ground. climate change can melt polar caps or for instance freeze texas.

Answer:

Entropy is a measure of the degree of spreading and sharing of thermal energy within a system. For an ideal gas that expands at a constant temperature (meaning that it absorbs heat from the surroundings to compensate for the work it does during the expansion), the increase in entropy is given by ΔS= R1n  (V2/V1)

Explanation:

hope this helps!

Answer:

the answer is d

Explanation:

hopes this helps

Answer:

If they are pushing off the wall, it would be B, as they are going faster. If they are slowing down, it would probably be A, gradually getting slower.

Explanation:

Answer:

Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait. One example of a recessive inherited trait is a smooth chin, as opposed to a dominant cleft chin.

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 3. \ H-H}}[/tex]

Explanation:

To determine the polarity of a bond, we use the electronegativities of the individual atoms. The greater the difference, the more polar the bond.

1. H-Br

3.0-2.2=0.8

2. H-F

4.0-2.2=1.8

3. H-H

2.2-2.2=0.0

4. H-O

3.4-2.2=1.2

As we can see, the lowest difference is in hydrogen hydrogen at 0.0. You may also recognize that because they are 2 atoms of the same element, the electronegativity is the same for both, so it will equal 0. Since the electronegativity is 0, this is a nonpolar bond.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{7.72 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 12.8 239[/tex]

We have the final answer as

Hope this helps you

Answer:

Some worms are nocturnal and some a diurnal

Explanation:

Variation is difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).

NOTE:these are of the same species.

Answer: D. Reactions occur more slowly in the cold.​

Explanation:

Answer:

Explanation:

The name is of the compound is 3,3,4,4-tetramethylhexane.

Answer:

Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.

Explanation:

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Answer:

149.79 grams.

Explanation:

Formula

Joules = m * c * delta (t)

Givens

J = 28242

m = ?

c = 4.19

Δt = 63 - 18 = 45

Solution

28242 = m * 4.19 * 45

28242 = m * 188.55

m = 28242 / 188.55

m = 149.79

Cu will be produced at the negative electrode for the following reaction:

2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,therefore option (b) is correct.

Electrolysis is defined as a process of decomposing ionic compounds into their elements by passing a direct electric current through the compound in a molten  form.

Characteristics of negative electrode -:

The negative electrode in an electrolytic cell, is the one toward which positively charged particles are attracted.

The cathode has a negative charge because it is connected to the negatively charged .

When an electrolyte is dissolved in water and an electric current is passed through it, the Cations move towards the cathode and Anions move towards anode .

Cu will be produced at the negative electrode for the following reaction:

2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,hence option (b) is correct.

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The  H2  product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.

The electrode is an electrical conductor or source of electricity that carries electric current or circuit to the non-metallic circuit parts of a circuit, some examples are electrolyte and semiconductor.

The following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O2(g) is a redox reaction in which the negative end is producing the H2 gas and copper gets solidify  at the positive end.

Therefore, H₂  product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.

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Answer:

earth

Explanation:

Answer:

you should use the scientific name because it is the same everywhere in the world

Explanation:

the scientific name of anything and everything is the same around the world.

Answer:

the 3rd one is the answer

Answer:

I believe it is scenario 4

Explanation:

Answer:

Photosynthesis

Explanation:

Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen. The oxygen is released, or “exhaled”, from leaves while the energy contained within glucose molecules is used throughout the plant for growth, flower formation, and fruit development.

Answer:

Arrhenius Base

Explanation:

"NaOH is an Arrhenius base because it dissociates in water to give the hydroxide (OH-) and sodium (Na+) ions. An Arrhenius acid is therefore any substance that ionizes when it dissolves in water to give the H+, or hydrogen, ion. ... Acids provide the H+ ion; bases provide the OH- ion; and these ions combine to form water."

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