What does it mean when a cell is multicellular? I only have 5 minutes so please help.

Answer:

A

Explanation:

Metals has low Ionization energy and low electron affinity. (Option A)

Metals has low ionization energy because the valence electrons in alkali metals, are very away from the nucleus. Hence, they can easily lose electrons with low energy and become cationic.

Metals have a low electron affinity because they want to give up their valence electrons rather than gain electrons, which require more energy than necessary.

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Answer:

1. 110 grams

2.0.06 moles

3. 129.1 grams

4. 0.08 moles

Explanation:

Answer:

Gravity is very important for us,animals and plants. We could not survive Earth without it. The sun's gravity keeps Earth in orbit around it, keeping us a good distance away from it (the sun). Gravity is holding down our atmosphere and the air we need to breathe along with it.

Answer:

the invisible force around the atmosphere that keeps us from floating all over the place

Explanation:

its the best I could come up with

Answer:

gravity is the thing keeping you down to earth keeping your head outta the clouds and your feet on the ground :)

Explanation:

Answer:

23.0 s⁻¹ is rate constant

Explanation:

Using the Arrhenius equation:

k = A * e^(-Ea/RT)

Where k is rate constant

A is frequency factor (1.5x10¹¹s⁻¹)

Ea is activation energy = 55800J/mol

R is gas constant (8.314J/molK)

And T is absolute temperature (24°C + 273 = 297K)

Replacing:

k = 1.5x10¹¹s⁻¹ * e^(-55800J/mol/8.314J/molK*297K)

k = 1.5x10¹¹s⁻¹ * 1.53x10⁻¹⁰

Answer:

It's all about temperature, when water heats, it turns to a gas - like water on the stove. When heat is reduced, it goes back to a liquid, and when it's frozen (like an ice cube) it's now a solid.

Explanation:

Answer:

Evaporation liquid to a gas. Liquid to solid is freezing.

Gas to liquid is condensation.

Explanation:

Answer: 0.13 moles

Explanation:

Answer:

12.455≈12.5 tons

Explanation:

1 US gallon of water (gal) = 8.35 pounds of water (lb wt.)

so we divide 208,000 by 8.35 to covert to pounds

then divide the pounds by 2000 to convert to tons.

Given what we know about elements of the periodic table and their properties, we can confirm that the list with elements that have very similar properties is option B.

Therefore, we can confirm that since option B is the choice that lists all elements pertaining to the same group, in this case, the Alkaline-earth metals, it is the correct option as they will all have very similar properties.

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Answer:

C and D

Explanation:

Atoms with five, six or seven valance electrons gain electrons to complete the octet because it is more convenient for the atoms to gain three, two or one electron as compared to lose five, six or seven electrons. Thus atoms with five, six or seven valance electrons form negative ions by gaining electrons.

Atoms with one, two or three valance electrons lose the electrons to get complete octet because it is more convenient for the atoms to lose one two or three electrons as compared to gain the seven, six or five electrons. The atoms with one, two or three valance electrons form positive ions.

Answer:

V₂ = 15.27 L

Explanation:

Given data:

Initial volume = 14.0 L

Initial temperature = 25°C (25 + 273.15 = 298.15 k)

Final temperature = 52°C = (52+273.15 = 325.15 k)

Final volume = ?

Solution:

Charles Law:

" The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure "

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 14.0 L × 325.15 K / 298.15 k

V₂ = 4552.1 L.K / 298.15 K

V₂ = 15.27 L

Answer:

The example of alpha decay.

Explanation:

¹⁷⁵₇₈Pt     →  ¹⁷¹₇₆Os + ⁴₂He

The example of alpha decay.

Properties of alpha radiation:

Alpha radiations are emitted as a result of radioactive decay. The atom emit the alpha particles consist of two proton and two neutrons. Which is also called helium nuclei. When atom undergoes the alpha emission the original atom convert into the atom having mass number less than 4  and atomic number less than 2 as compared to parent atom the starting atom.

Alpha radiations can travel in a short distance.

These radiations can not penetrate into the skin or clothes.

These radiations can be harmful for the human if these are inhaled.

These radiations can be stopped by a piece of paper.

Another example:

₉₂U²³⁸   →   ₉₀Th²³⁴  + ₂He⁴  + energy

Answer:

Axial precession

Explanation:

It happens ever ~26'000 years.

Answer:

They are the same as one parent :)

Explanation: that is why we have more yellow corn than black corn because people planted only yellow corn to make more yellow corn :D

Answer:

The collision theory considered to be well- established and highly reliable, because it never breaks.

Explanation:

The product of electrolysis : Al at cathode and Cl₂(chlorine) at anode

Given

Aluminum chloride compound

Required

The product of electrolysis

Solution

The rule :

The reaction at the cathode(the negative pole) :

1. the reduced active metal is water, other than that the metal will be reduced

2. H⁺ of the acid will be reduced

The reaction at the anode((the positive pole) :

1. if the electrodes are not inert then the metal is oxidized

2. If inert then:

a. OH⁻ from the base will be oxidized

b. The halogen metal will oxidize

In the electrolysis of molten AlCl₃ with an inert electrode, the cation will be reduced at the cathode and the anion will be oxidized at the anode

Cathode : Al³⁺ + 3e⁻ ⇒ Al(s)

Anode : 2Cl⁻⇒Cl₂(g) + 2e⁻

Answer:

Explanation:

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

Answer:

Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. There is a great deal of empty space between particles, which have a lot of kinetic energy.

Explanation:

Answer: true

Explanation: I looked it up

Answer:

The cell membrane is the outer layer of the cell. The primary function of the cell membrane is to regulate what substances enter and leave the cell. The cell membrane is selectively permeable, or "semi-permeable", meaning that the membrane only allows certain substances to enter or leave the cell.

Explanation:

already had this question and this is the correct answer

Answer:

Wont show pic sorry

Explanation:

If you can get the pic to work i could solve it for you

Answer:

HR

Explanation:

HR stands for hour

Answer:

The two conditions that can limit the usefulness of the kinetic-molecular theory in describing gas behavior are "high pressure" and "low temperatures". At low temperatures or high pressures, real gases deviate significantly from ideal gas behavior.

Explanation:

Answer:

it has oxidized because it has has given out 2 ions

Answer:

Oxidised

Explanation:

Mg -------> Mg2+ +2electrons

In this case Mg loses two electrons and loss of electron is oxidation so Mg oxidised.

Answer:

mass = 2.65 [nearest hundredth].

Explanation:

Mass = Density / Volume

mass = 1000 / 376.8

mass = 2.653927813163.. ≈ 2.65

Answer:B

Explanation:

There are 4.9 × 10²⁴ atoms in 88.0 grams of Boron.

no. of moles = 88/10.81

no. of moles = 8.14 moles

= 4.9 × 10²⁴ atoms of Boron.

Therefore, there are 4.9 × 10²⁴ atoms in 88.0 grams of Boron.

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Answer: due to the nature and complexity of some documents, an accessible version of the ... 1. Grade 6 Science Learning Activity. Ocean, Atmosphere, & Climate Unit ... We started this unit by making initial claims about why Christchurch's air ... Ocean currents move in the same direction as the prevailing wind in some places in the.

Explanation:Ocean water is on the move, affecting your climate, your local ecosystem, and the ... Map of temperature of the North Atlantic Ocean shows the warm Gulf Stream current along the. Winds, water density, and tides all drive ocean currents. ... much of Northern Europe significantly warmer than other places equally as far north.

im pretty sure it is b

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