The diagram shows an animal cell.
Which letter marks the location where carbon dioxide is
produced during respiration?

W
X
Y
Z

Answer:

radiation

LOL but also heat

Explanation:

hope this helps

Answer:

Explanation:

The expected product is MgO, so the 1-to-1 mole ratio Mg to O in the product is all that is required.

Answer:

answer #1 used throughout the world to power devices, appliances and methods of transportation utilized in daily life. To make things operate, electrical energy must be emitted from energy sources such as power plants, to enable an object to consume the power it needs to function. ((if you want to cut it down short use the two first sentences))

answer #2 We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar

Explanation:

Awnser

B. Metallic bonds

Explanation:

Castle Learning

Answer:

B) metallic bonds

Explanation:

Castle learning

Answer:

the Ray's go right through it

Explanation:

the Ray's are so small they punch right through them

Answer:

Explanation:

The reason why is based in something called the plasma frequency of the metal of a mirror. A metal, as you may know, is composed of a series of atom (ion, effectively) cores - nuclei, together with some, but not all, of their bound electrons - which contribute the remaining outermost electrons of their unbound forms to a communally shared "electron sea" - kind of like a giant, distributed omnidirectional covalent bond that extends all throughout the whole metal crystal (here we're just considering a single crystal for simplicity). The electrons are quantumed out all over the full extent of the crystal and effectively form a sort of "gas" throughout and permeating the metal.

When an electromagnetic wave approaches that gas, the free charges within it - the electrons - start oscillating, and as they do so, they set up another wave going outward at the same time as the first is going in. This begins as soon as the first wave begins to impinge.

However, if the wave oscillation is fast enough, the electrons can't keep up due to their mass, and thus they are unable to form the reflected wave. The frequency at which this occurs is called the metal's plasma frequency (and is inversely proportional to the square root of the mass, so that a high mass particle would have a lower plasma frequency). The name comes from the fact that the metal can be thought of in a sense as a kind of "solid plasma" - ions with free electrons, the difference with what most people think of as a "plasma" being here the ions are not free to move about of their own accord.

Answer:

it is always necessary to use the roman numeral as the assigned charge of the metal.

Explanation:

This is so that one would know which Transition metal is being used. For example copper (II) would be Cu²+

Answer:

0.01kWh

Explanation:

Given parameters:

Power  = 20watts

Time = 0.5hrs

Unknown:

Energy of other dryer  = ?

Solution:

The electrical energy of the dryer can be calculated using the expression below;

  Electrical energy  = IVt

 P  = IV

I is the current

V is the voltage

t is the time

P is the power

  Convert 20watts to kilowatts;

         1000watts  = 1kW

          20watts  = [tex]\frac{20}{1000}[/tex]   = 0.02kW

  Electrical energy  = 0.02kW x 0.5hr = 0.01kWh

[tex]1000 \: watts = \: 1kW \\ 20 \: watts = \: \frac{20}{1000} \\

\: = 0.02kW \\

Electrical \: energy = 0.02kW x 0.5hr \\ = 0.01kWh[/tex]

Answer:

A.  Molecules are speeding up during boiling.

Explanation:

Answer:it’s A molocules are spending up during boiling

Explanation:got it right on ed

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{9 \times {10}^{5} }{3 \times {10}^{ - 1} } \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Yes, because in situations where an individual has been shot, it may be helpful for investigators to know how far away the shooter was from the victim. For example, in some cases a defendant accused of murderr may say that the shooting happened in self-defence. The actual distance between the two individuals may indicate whether the defendant is telling the truth. Similarly, knowing the approximate distance of a shot can help forensic scientists determine if a death was a suic ! de, or if it was a homic! de made to look like a suic! de.

Explanation:

sorry, brainly wont let me write out certain words

Answer:

Fluorine(F),chroine(CI),bromine(BR),iodine(I)astatine(AT)

Explanation:

friend me when u say thank u

Answer:

The correct option is FALSE

Explanation:

Mole ratio is the ratio of the number of moles of two compounds in a balanced chemical reaction. Number of moles of a compound in a chemical reaction is the number written before the compound.

For example, the mole ratio of Iron (Fe) and water (H₂O) in the equation below is 3:4

3Fe + 4H₂O  ⇒  Fe₃O₄ + 4H₂

Thus, mole ratio does not compare subscripts of compounds.

The correct answer is 9.6h.

As you know, a radioactive isotope's nuclear half-life tells you exactly how much time must pass in order for an initial sample of this isotope to be halved.

Using the formula , A = Ao. [tex]1/2^n[/tex]

where , A- final mass after decay

Ao - initial mass

n - the number of half-lives that pass in the given period of time

Now, putting all the values, we get

1.3 × [tex]10^-2[/tex] mg = 0.050 mg × [tex]1/ 2^n[/tex]

Take the natural log of both sides of the equation to get,

㏑[tex](1.3 . 10^{-2} / 0.050 )[/tex] = ㏑[tex]((1/2)^{n})[/tex]

㏑[tex](1.3 . 10^{-2} / 0.050 )[/tex] = n. ln[tex](1/2)\\[/tex]

n = 1.6

Since n represents the number of half-lives that pass in a given period of time, you can say that

[tex]n = t / t _{1/2}[/tex]

t= 1.6 × 6 h

t = 9.6h
Hence, it will take 9.6 h  until the radioactive isotope decays.

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Answer:

it is not an act answer but it has information

Explanation:

A molecule is defined as two or more atoms of the same element different element that are bound together. A molecule may be homonuclear, which means, it consists of atoms of one chemical element, as with oxygen (O2); or it may be heteronuclear, a chemical compound composed of more than one element, as with water (H2O).

A molecule is made up of two or more atoms, and it can be composed of atoms of the same element or different elements.

A molecule is a particle that consists of two or more atoms chemically bonded together. It is the smallest unit of a compound that retains the chemical properties of that compound.

Molecules can be composed of atoms of the same element or different elements. When atoms of the same element combine to form a molecule, it is called a diatomic molecule.

On the other hand, molecules can also be formed when atoms of different elements combine. In this case, the molecule is considered a compound. Compounds are composed of two or more different elements chemically bonded together.

Hence, a molecule is made up of two or more atoms, and it can be composed of atoms of the same element or different elements.

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Answer: i hope these help, lmk if they’re right.

Explanation:

Answer:

conductivity in water/ solid state

Explanation:

becuase, they both dissolve in water the same, therofre it is the least helpful.

The test that will be least helpful to determine if ionic or covalent bonds have stronger intermolecular is solubility in water. Therefore, option (B) is correct.

The covalent bonds are formed by the shared pair of electrons between the atoms while the ionic bonds are formed by the complete transfer of electrons between the atoms. Methane is covalent while NaCl is an ionic compound.

Ionic compounds have strong intermolecular forces of attraction while covalent compounds don't. The covalent solids exhibit less melting point compared to the ionic compound.

Covalent compounds are generally more flammable than ionic solids. Salt conducts electricity in the water while sugar does not conduct electricity in the water.

As both students are trying to find the stronger intermolecular forces between ionic or covalent bonds, both salt and sugar are soluble in water. Therefore, the solubility in water would not be relevant to their experiment

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Your question is incomplete, but most probably the complete question was,

Two students are planning an investigation to determine if ionic or covalent bonds have stronger intermolecular. They are using salt (ionic), sugar (polar covalent), and moth balls (nonpolar covalent). Which one of the tests would not be relevant to their experiment?

(A) Flammability

(B) Solubility in water

(C) Conductivity in water

(D) Melting Point

Answer:

im pretty sure its decreases going across a row (left to right)

Explanation:

As you move from left to right across a period on the periodic table the size of an atom will decrease

Answer:

"Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules.  Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius"

Explanation:

Answer:

The first one is Satellite! Second one is Gravity! Third one is Severe weather occurs causing large waves to hit the coast!

Explanation:

I took the test~

We know that a chemical reaction has occurred by the appearance of a solid, evolution of a gas or change of color.

A chemical reaction refers to an interaction between reactants which leads to the formation of a product. A chemical reaction is represented using a chemical reaction equation.

We know that a chemical reaction has occurred when new substances appear in the system. This is signaled by the appearance of a solid, evolution of a gas or change of color.

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Answer:

4. 60 neutrons.

Explanation:

The given isotopes;

         ¹⁰⁶₄₆Pd

In this isotope, we can deduce that the mass number is the superscript and the atomic number is the subscript;

     Mass number  = 106

     Atomic number  = 46

Mass number is the number of protons and neutrons in an atom;

       Mass number = Protons + neutrons

Atomic number is the number of protons

So,  Number of protons  = 46

Number of neutrons  = Mass number  - Atomic number

                                    = 106  - 46

                                     = 60

Number of neutrons  = 60

Answer:

Upwelling

Explanation:

Answer:

C. the two atoms must be of the same element

Answer:

digstive system

Explanation:

Answer:

light

Explanation:

light is either from electricity or from the sun